Recent research progress of hierarchical zeolites is reviewed with respect to their structures，properties and synthesis. Due to the insertion of mesoporous，the yield and selectivity of target products are improved，thus the hierarchical zeolites have large potential applications in catalysis. The synthesis of hierarchical zeolites using two kinds of molecular sieve is discussed，especially the methods of post-processing and templating. The degree of desilication or dealumination，and suitable but cheap templates are essential techniques to develop hierarchical zeolite materials. The application prospect of hierarchical zeolites in methanol to propylene reaction is discussed，and an appropriate ratio of micro/ mesopores，appropriate distribution as well as intensity of catalyst are the key issues for its application.

The reaction principle and construction characteristics of jet-loop-reactor are reviewed in this paper，and applications as multiphase reactor in various areas are discussed，such as chemical engineering and chemistry，biochemistry，and environmental protection. The high reaction capability of jet-loop-reactor and its booming status in multiphase reaction field are indicated. The direction for future development is proposed.

The inhibition effects of a kind of complex inhibitor（composed of TMHPO· and TBC in the weight ratio of 1 to 1）on polymerization of styrene were investigated. The relative volatilities of C₈ components and styrene were tested at 25 kPa. According to relative volatility of o-xylene and styrene，the influence of single and mixed extractants in the extractive distillation process of styrene was also studied through the experiments of vapor-liquid equilibrium in the presence of phenylacetylene. The results showed that N,N-dimethyl formamide was the optimal single extractant，and the mixed solvent of dimethyl sulfoxide and N-methyl pyrrolidone（mass ratio 3∶7）also achieved good performance.

An experimental investigation of vertical out-tube falling film heat transfer with different inlet spray densities of ammonia water mixture and inlet hot water temperatures was conducted. The falling film evaporator had a total height of 6000mm and the cycling working fluids were high concentration 60% and 50% ammonia water. We mainly studied the influence of spray density and inlet temperature of hot water on heat transfer coefficient，ammonia vapor amount and evaporation pressure. The experiment showed that heat transfer coefficient and ammonia vapor amount increased first and then decreased with increasing inlet spray density. The higher the hot water temperature，the higher the evaporation pressure. Heat transfer coefficient increased lineany with increasing hot water temperature. The experimental heat transfer coefficient of ammonia water solution was significantly higher than that of water reported in literature. For 50% water，optimum spray density was between 0.2200 and 0.2500 kg/(m·s)；for 60% ammonia water，optimum spray density was between 0.2600 and 0.2900 kg/(m·s). In this experiment，heat transfer performance of 60% ammonia water was better than 50% ammonia water.

The negative charged hollow fiber membrane was prepared by ultraviolet irradiation induced 2-acrylamide-2-methyl-propanesulfonic acid（AMPS）grafting polymerization on the surface of PSF membrane. In this paper，the separation of heparin sodium by the charged membrane was investigated. Experiment results indicated that irradiation time，monomer concentration and pH value of heparin sodium solution affected the membrane separation performance. When irradiation time was 2 min，AMPS monomer concentration was 1%，operation pressure was 0.1 MPa，charged membrane had high retention performance and maximum permeate flux of heparin sodium solution. The retention rate of charged membrane to heparin sodium was higher at pH value of 9.The permeate flux of membrane was higher at pH value of 5. The effect of electrostatic repulsion among charged membrane and anionic heparin sodium caused higher permeate flux and retention performance.

Crosslinked β-cyclodextrin（β-CyD）polymers with diisocyanate was prepared under ultrasonic irradiation. The key parameters and optimum synthesis conditions were optimized by orthogonal experiment and evaluated with yield ratio. The ratio of β-CyD∶diisocyanate was 1∶9（mol/mol），hexamethylene diisocyanate（HDI）was chosen as crosslinking agent，the ratio of dibutyltin dilaurate∶triethylene diamine was 1∶1.5（wt/wt），reaction temperature was 60 ℃，reaction time was 7 h. FTIR，SEM and TGA were used for the characterization of crosslinked polymers. The results suggested that β-CyD polymers retained cavity structure，crosslinked interactions of β-CyD and diisocyanate formed carbamate groups and the network surface features. Reaction temperature was lowered and reaction time was shortened under ultrasonic irradiation. The crosslinked polymers had micro-sphere surface topography and multi-hole cavity structure.

Aiming at miniaturization research，we developed a new structure PSA oxygen generator with rotary six-columns. This paper introduces the operating principle of the rotary six-columns PSA oxygen generator，and experimental study on the effects of main process parameters on the miniature rotary six-columns PSA oxygen system. The experimental results indicated that with the increase of rotary speed，the oxygen purity of product increased firstly but decreased afterward，and there was an optimal rotating speed for a specific feed flow rate which ensured the purest oxygen. With the increase of feed flow rate，the purity of oxygen increased and the recovery decreased，therefore，there was an optimal feed flow rate. The ratio of pressurization time to adsorption time had obvious influence on oxygen concentration，and pressure equalization steps increased oxygen purity and recovery rate obviously compared with ordinary PSA oxygen generators. This device could offer 92% oxygen concentration production with a smaller ratio of column height to diameter and shorter cycle time.

The flowsheeting for hydrocracking is made up of reactor and fractionating tower. Since lumped parameters of the two parts are not the same，using a single group of lumped parameters may reduce the precision of the model. In this paper，the method for lumped parameter conversion is introduced. Based on the quality and volume of the output of the reactor，the quality and volume of virtual components are worked out after interpolation，cleavage and normalization for the distillation curve of the output of the reactor. At last，the lumped parameters for the fractionating tower can be figured out with the quality and volume of virtual components. The method can evidently increase the precision of the model.

ZSM-5-filled hydroxyl terminated polybutadiene（HTPB）-based polyurethane（PU）membranes（PU-ZSM-5），were prepared by a two-step polymerization process，and were used as membrane material to recover，isopropyl acetate（IPAC），from aqueous solution by pervaporation（PV）. The chemical structure，morphology and thermal stability of these filled membranes were characterized. The effects of ZSM-5 content on swelling degree and pervaporation performance were investigated. The results indicated that the incorporation of the ZSM-5 improved the thermal stability of the membranes apparently was compatible with the membranes. The swelling degree of the ZSM-5-?lled PU membranes decreased compared with that of PU membrane without ZSM-5，and with the increase of ZSM-5 content，the separation factor increased initially and then decreased. The PU-ZSM-5 membranes containing 20% ZSM-5 showed the highest separation factor for 1% IPAC in feed at 303K. With increasing operating temperature and feed concentration，both permeation ?ux and separation factor increased. The best PV performance of the PU-ZSM-5 membranes containing 20% ZSM-5，separation factor and total ?ux 288.72 g/(m²×h) and 53.21 g/(m²×h)，respectively was achieved with feed concentration of 1wt% IPAC at 333 K.

The crosslinked starch microspheres（CSM）were synthesized from soluble starch by inverse suspension polymerization. The adsorption behavior of CSM for p-hydroxyanisole was investigated. The kinetics and thermodynamics characteristics were also studied. The structures of CSM before and after adsorption were characterized by particle size analyzer，scanning electron microscope，FT-IR spectroscopy and X ray diffraction（XRD），and the mechanism of adsorption was also discussed. Within the framework of the study，the adsorption characteristics of CSM for p-hydroxyanisole obeyed the Langmiur and Freundlich adsorption isotherm equations. The enthalpy change ΔH，entropy change ΔS and free energy change ΔG for p-hydroxyanisole adsorbed by CSM were all negative at different temperatures. The adsorption was a spontaneous and exothermic process.

The fluid flow and heat transfer for shell side in reticulated orifice-baffle longitudinal flow type heat exchanger was simulated with Fluent software. The temperature field，velocity field，and pressure field in shell side were obtained. The enhancement mechanism of heat transfer due to the structure of reticulated orifice-baffle was discussed and the axial flow and heat transfer were analyzed for shell side according to the simulation results. Finally，an analysis of the flow field and temperature field close to the wall was given.

5-Hydroxymethylfurfural（HMF）is an important platform chemical with great application value. Enhancing the efficiency of synthesis and reducing the cost of production for HMF have been investigated by many researchers. Firstly，this paper introduced the generation mechanism of HMF. Based on the reaction scheme，many kinds of synthetic method of HMF from year 2006 to 2010 were summarized，and categorized as raw materials（monosaccharide and polysaccharides），catalysts（solid acid catalysts and homogeneous acid catalysts），reaction solvents（single-phase system and two-phase system）and subsidiary conditions（microwave-assisted heating and supplementary modifiers）. Meanwhile，the HMF derivatives and their applications is briefly introduced. Finally，prominent problems of current studies are discussed，and main research fields are also analyzed.

Based on the characteristics of coal slurry GE gasification technology，a simplified calculation model of the gasification process was established. The model could quantitatively calculate the gasification index，such as specific coal consumption，and specific oxygen consumption. By using the model，the effect of ash content on specific coal consumption and specific oxygen consumption of GE gasification were quantitatively calculated，and the results indicated that when the ash content of raw coal was reduced by one percent，the specific coal consumption would reduce by about 0.33%，and the specific oxygen consumption would reduce by about by 0.72%. This work could provide reference for considering deashing of raw coal for GE gasification.

Aromatics selective ring opening（SRO）reaction can effectively  increase cetane number of FCC diesel and ensure higher diesel yield. In this paper，advances in carrier material，active metal and promoter in preparation of SRO catalysts are presented. The difficulities and prospects of SRO catalyst development are discussed.

Research progress of CuO-CeO₂-based catalysts for preferential oxidation of CO in hydrogen-rich gas is reviewed in this paper. The present status of CuO-CeO₂-based catalysts is analyzed. The effects of preparation technology，composition optimization，additive modification and carrier promotion on catalytic properties of CuO-CeO₂-based catalysts are summarized. The active sites，catalytic mechanism，stability and deactivation of the catalysts are presented. The obstacles for practical application of the catalysts are pointed out. Based on the aforementioned analysis，the possible near future development trend of the CuO-CeO₂-based catalysts is forecasted.

1,2-propanediol was prepared by hydrogenolysis of glycerol in two steps. Firstly，glycerol was dehydrated over bi-functional catalyst Cu/SiO₂ into acetol，which was in turn hydrogenated into 1,2-propanediol over the same catalyst. The catalyst Cu/ SiO₂ was prepared，by the coprecipitation method. The catalyst preparation was simple，of low cost，and environmentally friendly. The prepared catalyst was characterized with BET and XRD. The result indicated that the prepared catalyst had comparatively high activity. The best conversion（>96%）and selectivity（>96%）performance of the catalyst was achieved when the Cu loading amount was 10%. This bi-functional catalyst possessed acid site and metal active site as well. The particle size of Cu was the major factor to influence the activity of the catalyst. Deactivation of the catalyst was attributed to interaction of the copper species on the catalyst surface and the carrier，which caused aggregation of the active species.

HZSM-5 catalysts were modified by the addition of Zn through impregnation and hydrothermal methods respectively. X ray diffraction（XRD），X ray photoelectron spectroscopy（XPS），nitrogen adsorption，temperature-programmed desorption of ammonia（NH₃-TPD）and scanning electron microscopy（SEM）techniques were used to characterize the catalysts. The results showed that the addition of Zn by the two methods had little influence on the skeletal structure，pore structure and morphology of catalyst particles，but could change the surface acidity of catalysts. The addition of Zn by the two methods could lead to a reduction of the amounts of strong acid sites apparently，causing an increase of the amounts of weak acid sites slightly. In addition，the catalytic performance of catalysts for the aromatization of methanol were studied. The initial catalytic properties and selectivities of aromatization products over the HZSM-5 modified by Zn through the two methods were superior to those of HZSM-5. But the addition of Zn could lead to carbon deposition on the surface of HZSM-5 catalyst and result in quick deactivation.

Foam Ni/TiO₂ nano composite coatings were prepared by composite electrodepositon from Watts bath containing nanosized TiO₂ particles. The surface morphologies of the composite coatings were characterized by scanning electronic microscopy（SEM）. The composition of the coatings was analyzed by energy dispersive spectroscopy（EDS）. The effect of adding surfactant in the plating solution on the composite coatings was also studied. The photocatalytic activity of the foam Ni/TiO₂ nano composite coatings on colibacillus and chlorella was discussed. The results showed that the appearance of coatings was fine and the amount of weight percentage of Ti in the coatings reached 5.97%. The foam Ni/TiO₂ nano composite coatings with added anionic surfactant were finely dispered. The inactivation ratio of the aqueous sample containing colibacillus by the composite coatings reached 60.1% and 99.9% after 30 min and 60 min respectively. When the aqueous sample containing chlorella was treated with the composite coatings，the content of chlorophyll-a decreased from 98.2 mg/m³ to 38.2 mg/m³ within 3 h. The coatings exhibited excellent photocatalytic activity.

Ni（II）-α-diimine catalyst [(2,6-i-Pr)₂C₆H₃-DAB（An）]NiBr₂ plus MAO was immobilized on the surface of silica gel by physical adsorption，and the immobilized catalyst was used to catalyze polymerization of ethylene. The polymer properties were determined by GPC，DSC，IR，and were compared with the polymer made by homogeneous catalyst. The results showed that the Al/Ni molar ratio of immobilized Ni（II）-α-diimine catalyst was about 100. And the immobilized catalyst could catalyze the homopolymerization of ethylene in n-hexane. Compared with the polymer made by the homogeneous catalyst，molecular weight of the polymer and immobilized catalyst efficiency all decreased，while density，and T_m all increased. At a specific temperature，with the increase of Al/Ni molar ratio and ethylene pressure，branching degree of polyethylenes decreased，while molecular weight，density，T_m and immobilized catalyst efficiency all increased.

Click chemistry has already received extensive attention owing to its obvious characteristics，such as readily available starting materials，moderate reaction conditions，high yields and selectivity. Thiol-yne coupling reaction has been recently demonstrated as a novel click reaction，owning to the features of simplicity，high efficiency and versatility，moderate reaction conditions，and a single product. Herein，the definition，characteristics，history as well as applications of click chemistry are reviewed. The mechanism of thiol-yne reaction and the advance in the preparation of functional polymers and surface modification based on this reaction are discussed，including not only synthesis of dendrimers，hyperbranched polymers，networks，functional materials，biomolecules and supramolecules，but also surface modification of materials. The prospects of thiol-yne reaction are also presented.

Lignin is the second largest component of lignocellulosic biomass. The conversion of lignin with high efficiency and low cost is a key technology in commercial utilization of lignocellulosic biomass conversion. The utilization of lignin to replace part of polyols in polyurethane synthesis follows two main approaches：including direct utilization of lignin without any preliminary chemical modification and utilization of lignin with chemical modification. Direct utilization of lignin without chemical modification includes alkali lignin，lignosulfonate，kraft lignin and organosolvent lignin. Chemical modification includes hydroxylation modified lignin and nitration modified lignin. The problem as well as the development direction of lignin-based polyurethane materials are presented.

Converting heavy ends of petroleum，which has a high C/H value，to carbon materials by dehydrogenation is an important approach to making efficient use of such heary ends，because petroleum is becoming heavier and more than 10% of crude oil is super heavy components that cannot be converted into light oil by the present technology. In this review，recent developments in the synthesis of carbon functional materials from heavy ends of petroleum are introduced，including the synthesis approaches by direct dehydrogenation of heavy oil and a self-assembly process in gas or liquid phase. The carbon functional materials prepared from heavy ends of petroleum include active carbon，carbon foam，carbon fibers，carbon nano-materials and versatile composites or doped carbon materials. Strongpoints and shortcomings of the preparation of carbon functional materials from heavy ends of petroleum are presented，and suggestions for future research are made.

Highly ordered TiO₂ nanotube arrays have attracted increasing interest due to its highly ordered structure and convenient control of its size. Due to the unique nanotubular structure，the key factors affecting the photocatalytic activity are discussed in terms of morphology and geometry，such as tube roughness，tube length，wall thickness，tube diameter and surface area. Highly ordered TiO₂ nanotube arrays grown on different substrates，such as transparent glasses，free-standing，Ti meshes and non-planar Ti foils，are the important ways to improve photocatalytic activity，and the progress of these new types of TiO₂ nanotube arrays is reviewed. In addition，different doping methods and their effects on the TiO₂ nanotube arrays with various elements are summarized. The existing problems are discussed and further research prospects are proposed.

The carbonates with different terminal groups were synthesized by transesterification of 1,6-hexanediol and dimethyl carbonate，diethyl carbonate，dipropyl carbonate，diisopropyl carbonate，dibutyl carbonate，respectively. Based on the analysis of products，the activities of dimethyl carbonate and dibutyl carbonate were higher，while the activities of diethyl carbonate，dipropyl carbonate，diisopropyl carbonate were similar. Referring to the NMR analysis of products of carbonate oligomer with different end group with glycerol，the activity of alkyloxy group in carbonate was in the order：MeO> BuO>PrO> EtO>i-PrO. The possible mechanism of the transesterification was proposed.

Through testing of mechanical properties，and crystallization and SEM testing of different urea and glycerol co-plasticized TPS，the optimum weight ratio starch/urea/glycerol was 100/20/20. The tensile modulus of the TPS could reach 0.959 MPa，the elongation was up to 209%，recrystallization of urea did not occur，and the TPS had a good plasticization effect，in RH = 33% humidity environment preserved for one week.

The heterogeneous deacetylation reaction kinetics of chitin was studied under ultrasonic irradiation. The results indicated that under ultrasonic irradiation，the degree of deacetylation of chitin was improved dramatically，and the reaction process of deacetylation reaction followed a pseudo-first order kinetic model. The reaction was diffusion controlled，and its apparent activation energy was E=23.45 kJ/mol.

The mechanical and thermal properties of lignin/LDPE-EVA blends were investigated with different offers of lignin and compatibilizer. The results indicated that the tensile strength of blends was increased to 25.88MPa（increase by 9% compared to the LDPE-EVA）and the decrease of endothermic peak and improvement of degradation were observed with filling 20 parts of lignin. In addition，the introduction of 10 parts of compatibilizer LDPE-g-MAH was the main reason for the continued increase of strength tensile and decrease of endothermic peak，which improved the compatibility of blends.

Radiation induced emulsion polymerization is one method that in high-energy rays the medium is decomposed into free radicals triggering emulsion polymerization. In this paper，a double bond terminated polyurethane prepolymer was synthesized with DMPA，N210，HPMA and IPDI，as raw materials．The obtained prepolymer was then mixed with MMA and BA to decrease its viscosity. Polyurethane-acrylate（PUA）could be obtained through mechanical emulsification，neutralization and copolymerization with MMA and BA by ⁶⁰Co radiation（initiator）. Casting film of PUA was characterized with FTIR，TGA，mechanical properties and water resistance tests．The results showed that the properties of PUA prepared through radiation induced emulsion polymerization were superior to that prepared with chemical initiator polymerization. Compared with the chemical method，the average particle size was decreased from 143.5 nm to 100 nm；solid content was increased from 37.5% to 38.6%；tensile strength was increased from 15.3 MPa to 18.3 MPa；water absorption rate of casting film was decreased from 7.4% to 5.6%；and initial thermal decomposition was increased from 320 ℃ to 380 ℃．The findings could provide guidance for the synthesis of PUA and related research．

This article describes the use of waste clay as filler and softener，and its application in natural rubber. With the same number of parts of pottery clay（and 3 parts of aromatic hydrocarbon）for performance comparison. the results showed that waste clay could be used as befillers and softener in natural rubber. And the performance of the rubber with waste clay as filler was good，such as liquidity，scorch resistance，tearing permanent deformation，abrasion resistance，impact flexibility，elongation，anti-aging.

Polyhydroxyalkanoate（PHA）is a type of polymer which can be synthesized by a variety of microbes. This new kind of material can be used as a substitute for the traditional petrochemical plastics because of its complete bio-degradability. PHA biosynthesis paths in different microbes have been studied widely and extensively to these days. In order to reduce PHA price and realize industrialisation，many researches have been focused on screening high-productivity strain and using cheap carbon source to synthesis PHA. This review introduces the PHA biosynthesis pathways and advance in biosynthesis of PHA.

Investigation was carried out to elucidate the in?uence of process parameters on the characteristics of chitosan microspheres prepared by reverse phase suspension cross-linked polymerization. The chitosan droplet solidi?ed and hardened by glutaraldehyde crosslinking agent was dispersed in the oil phase composed of liquid paraffin in the presence of Span 80 surfactant. Iminodiacetic acid（IDA）was attached onto chitosan microspheres activated by epichlorohydrin under basic condition. The results indicated that the optimal epoxy density above 0.15 mmol/g gel was achieved at 10%（f）epichlorohydrin as activating accelerator in the solution consisting of 0.6 mol/L NaOH and 40% DMSO. The study on linkaging of IDA demonstrated that the support was synthesized in the solution composed of 0.6 mol/L IDA and 2.0 mol/L NaOH at 60 ℃ for 6 h，whose adsorption of Cu²⁺ was up to 172.787 g/g gel. The moisture content of the matrix was up to 45.60% and the porosity was 69.45% under the optimized conditions. The novel matrix could be used in immobilized metal ion affinity chromatography as the solid phase.

Chitosan was modified by chloroacetic acid，acrylic acid and 2,3-epoxypropyl trimethyl  ammonium chloride to obtain amphoteric carboxymethyl-quaternary ammonium chitosan（CMQAC）and amphoteric carboxyethyl-quaternary ammonium chitosan（CEQAC），then the structures of the products were confirmed by IR，¹H NMR and XRD. The performance of scaling inhibition of amphoteric chitosan derivatives with respect to CaSO₄ were evaluated by static antiscaling experiment，and the results showed that the inhibition rate could be up to 100% when the dosage of  amphoteric chitosan derivatives was 16 mg/L，[Ca²⁺]<2000 mg/L and [SO₄^2－]<4800 mg/L. The bacterial inhibition of amphoteric chitosan derivatives with different degrees of substitution（DS）of quaternary ammonium was measured with the vial method. The results showed that the sterilizing rates can be up to 99.7% and 99.2% with chitosan derivative addition of 30mg/L when the DS of quaternary ammonium was 0.73 and 0.50 respectively for CMQAC and of CEQAC. The modification resulted in a great improvement in scaling inhibition and bacterial inhibition of chitosan derivatives in comparison with chitosan.

Aluminum titanium coupling agents with amphoteric ion were synthesized by using PAC（polyaluminium chloride），butyl titanate and stearic acid as raw materials. Synthesis conditions of aluminum titanium coupling agents were optimized through the experiment. The effects of preparation conditions，such as reaction temperature，reaction time and raw materials proportion on the yield of aluminum titanium coupling agents were investigated. The results indicated that the optimal conditions to prepare aluminum titanium coupling agents with the yield of 91% were as follows：reaction temperature was 105 ℃，reaction time was 2 h，the mole ratio of the stearic acid and butyl titanate was 2∶3. The aluminum titanium coupling agents were used for surface modification of CaCO₃，and the variation of surface properties of CaCO₃ such as structure，sediment volume，dispersity and wetability was discussed.

Endormophin-1 synthesized by chem-biological method was purified by high-speed counter-current chromatograph technology（HSCCC）. The optimum separation conditions were as follows：A two-phase solvent system was ethyl acetate-methanol-water（3∶1.5∶3，v/v/v）. The lower phase as the mobile phase was operated at a flow rate of 1.0 mL /min，while the apparatus was rotated at 900 r/min，and detection were length was at 280 nm. Each time 120 mg of the crude sample was loaded under these conditions，and 71 mg of endorphin-1 with the purity of 99.1% was obtained. The recovery was 91.5%. The method was relatively simple，fast，and applicable to the large-scale isolation and separation of endormophin-1.

Membranes are promising candidates for the separation of carbon dioxide from the flue gas of fossil fuel power plants. The stability of the membrane systems directly restraints its extensive application. This study analyzes the characteristics of membranes，such as pore diameter distribution and porosity，which could affect separation efficiency and stability of the system. Under real conditions，after long-term exposure in flue gas，the impurities could change the performance of membranes. The reduction of gas flux was mainly caused by the deposition of ash particles and gypsum. Water vapor could condense on the surface of membranes or in the pores of membranes through capillary condensation. The presence of sulfur dioxide would decrease the carbon dioxide captured by membranes in the process of competitive adsorption，which resulted in a change of gas flux. All these factors would negatively impact the performance of membranes and affect the application of membrane systems.

Excess sludge and sludge utilization methods are described. Excess sludge utilized with microbial fuel cell technology is introduced，including utilization of excess sludge as the fuel for microbial fuel cell directly and indirectly. In the case of excess sludge utilized as the fuel for microbial fuel cell directly，the output power density，removal efficiencies of TCOD and SS are described. In the case of excess sludge was utilized as the fuel for microbial fuel cell indirectly，the supernatant fluid of microwave pretreated sludge or the volatile fatty acids（VFA）produced by sludge fermentation is used as the fuel. These methods can utilize excess sludge effectively and have broad application prospects.

In recent years，microbial degradation of residual polymers in the environment has been a hot topic. Polyacrylamide is hard to be degraded as a polymer with high molecular weight. The review starts with a brief introduction about the mechanism of microbial enzymes on polymers，and then summarizes the biodegradation of different kinds of polyacrylamide by microbes. Based on the biodegradation of complex structure polymers by fungi，a new means to degrade polyacrylamide is discussed.

600 kg SQ112 oxygenate scavenger were prepared by scaling up laboratory test and used for removal of trace oxygenate in isobutene in a 1L fixed-bed reactor with industrial side stream feedstock. The performance of removing dimethyl ether in isobutene and its regeneration at room temperature were studied. The result showed that under 0.6 MPa，liquid space velocity 1 h^－1 and room temperature，the oxygenate scavenger SQ112 could remove dimethyl ether from 1200—1300 mg/L to less than 2 mg/L in isobutene，meeting the specification of polymer grade isobutene. The penetration adsorption capacity of SQ112 for dimethyl ether was about 5%. No byproduct was found in the isobutene after deoxygenation. This adsorbent could be regenerated and the performance was good after regeneration.

Based on settlement principle and mathmatical analysis，the design and optimization of inclined-tube structure parameters of V301 oil remover on JZ9-3 platform was studied，and inclined-tube structure parameters of oil remover was optimized，providing theoretical basis for the transformation of inclined tube process design. The diameter of oil drops in wastewater decreased by 4 μm and the efficacy of oil removal increased remarkably. Clogging in the oil remover was improved.