The recent progress in the immobilization of non-metallocene olefin polymerization catalyst is reviewed. According to the different types of supports，this paper introduces the preparation and characterization of supported catalyst. The influence of the immobilization methods，polymerization temperature，the amount and type of co-catalyst，polymerization pressure and the effect of hydrogen on the behavior of supported catalysts in olefin polymerization are discussed. Moreover，the effects of such conditions mentioned above on the properties of the obtained polymers，such as molecular weight，molecular weight distribution，melting temperature，morphology，etc. are summarized.

In this paper，nano-sized Au catalysts for CO oxidation and selective oxidation are reported. It was found that for CO oxidation，both active phase and support had size effect. The interaction between active phase and support had remarkable influence on the activity，by affecting not only the size and shape of gold particle，but also the activation of oxygen. For propylene epoxidation，characterization revealed that the hydroperoxide species formed on Au surface by reaction of H2 and O2 was the intermediate of the reaction.

The preparation methods of Au nanoparticles，including citrate reduction method，two-phase method and seed mediate method were discussed. A brief introduction of Au preparation assisted by physical methods such as under laser radiation and ultrasonic field condition was given. The properties and applications of Au nanoparticles were also reviewed.

Production technologies of C8 aromatics isomers are introduced. The progress of p-xylene separation technologies is discussed. Shape selective catalytic technology could produce high concentration p-xylene. Crystallization becomes more important in treating high concentration p-xylene feed; Pressure swing adsorption is emerging as a low cost concentration technology. Separating xylene isomers with zeolite membrane has got remarkable progress.

Catalyst is the key to the selective catalytic reduction (SCR) of NOx，and its properties are directly related to the effect of NOx removal. In the last decade，low temperature SCR has received much attention due to its economics. This review summarizes th research status in the low temperature SCR catalyst，including noble metals，metal oxides，zeolites and carbon materials catalysts. The carbon materials catalysts demonstrate good activity and stability at low temperature，and have abetter application prospect.

Recent research progresses in catalysts，such as dolomite，olivine，clay minerals，char，alkali metal-based compounds and Rh/CeO2/SiO2 for cracking biomass tar and CaO，LZ-Y82 and Ni-3 for cracking coal tar are reviewed in this article. The advantages and disadvantages of catalysts as well as catalytic mechanism are analyzed. The influences of composition and structure of catalysts and cracking conditions on catalytic activity are also discussed. Further key study areas in catalytic cracking of tars are presented.

The photoelectro-reactors were introduced from two types of slurry photoelectro-reactor and immobile photoelectro-reactor. An effective way of modifying photo-electrode by deposition of metal and coupling of semiconductor used to improve the oxidation efficiency of immobile photoelectro–reactor was pointed out. The main factors, including light source, material, additional applied potential, solution condition and reaction atmosphere, which affected the efficiency of photoelectro-reactor were discussed. Besides, some proposals for further studies of photoelectro-reactor were presented.

Layer-structured Li[Ni,Co,Mn]O2 is a very promising cathode material for Li-ion batteries. The preparation process and reaction condition have significant influence on the structure，properties and manufacturing cost of the material. Surface modification for Li[Ni,Co,Mn]O2 is an important approach to improving electrochemical performance. In this paper，the recent research progress about various synthesis methods and modification of Li[Ni,Co,Mn]O2 is reviewed and analyzed in detail. Finally，the current main problems and further R&D trend of the material are also discussed.

The development history and current status of the preparation methods of TiO2 fibers are summarized in this paper，and different preparation methods are presented by contrast. In particular，the influence factors in the sol-gel method are emphasized. Application progress of TiO2 fibers in pollution–control and its development prospects are reviewed respectively.

In this paper，the conception，classification，conducting and doping mechanisms of structural conductive polymer materials are introduced，according to the latest development trends of structural conductive polymer materials and nano-materials. Recent advances of research on synthesis methods of conductive polymer micro/nano-particles in and out of China are also summarized. The problems to be resolved in further investigations are pointed out.

This paper introduces the recent studies of hydrophobic modification of konjac glucomannan (KGM). The latest research progress on blending KGM with macromolecules via hydrophobic modification were also described，and emphasis is made on the latest development of KGM modification methods，including deacetylation，cross linking，graft copolymerization，interpenetration polymer net (IPN)，carboxymethylation. The research directions are also discussed，and thermoplastic KGM would provide a promising way for resolving the ‘white pollution’.

This paper introduces several separation technologies for alcohol-water system，which include not only traditional azeotropic distillation and extraction distillation，but also new membrane separation techniques，such as membrane distillation，pervaporation and membrane contactor. Meanwhile，a brief comparison of characteristics and efficiency for unit operation is made among all the separation methods.

The research progress of biological removal of nitrogen and phosphorus for treating municipal wastewater is reviewed. Three advanced processes of biological nutrient removal are emphasized：combined ANAMMOX-SHARON process，aerobic granular sludge process and reversed Anaerobic/Anoxic/oxic (A2/O) process .The advantages and disadvantages of various processes are compared. Consequently，applying denitrifying phosphorus removal bacteria to the reversed A2/O process is considered to be an important trend of simultaneous removal of nitrogen and phosphorus

Removal and recovery of nitrogen and phosphorus from wastewater by struvite crystallization，which has the advantages of high removal rate and rapid reaction rate. Moreover，struvite recovered from waterwater is a slow-release fertilizer and has high economic benefit. This paper presents the basic theory and the influence factors of struvite formation，struvite application and technico-economic analysis. The study trend of this technique is discussed in the end.

The conventional methods of preparing superfine medicament particles are presented. Two common methods of supercritical fluids recrystallization，rapid expansion of supercritical solution and supercritical anti-solvent crystallization are introduced. Their applications are presented，and the research work in the field of Chinese traditional medicine is reviewed. The prospect of supercritical fluids recrystallization technology as a new way to prepare fine particles of Chinese traditional medicine is also presented. Some problems still exist，such as low yield，high cost，and the technique and equipment are to be improved.

The mechanism and process of pharmaceutical impregnation，as well as cosolvent，in supercritical CO2 condition are introduced. On-line detection methods，especially weight measuring，volume measuring and in-situ spectroscopy are presented，The influence factors are also analyzed. The research progress in these fields is reviewed.

This review gives a wide scope on the use of ion exchange resins as catalysts in organic synthesis，such as acylation，alkylation，esterification，etherification，aldolisation，isomerisation and oligomerisation，epoxidation and ring-opening of epoxides. Compared with inorganic catalysts，the exchange resin as catalysts shows excellent catalytic performance and could be readily recycled. The prospect of application of ion exchange resins as catalyst is discussed.

The filled polyurethane elastomers were synthesized from polyether N-204，and toluene diisocyanate，with the chain extender of 1,4-butanediol and inorganic fillers treated by ultrasonic dispersion and coupling reaction. The wear resistance and mechanical properties of filled polyurethane elastomer as well as the distribution of fillers were studied. The results showed that the polyurethane elastomers possessed different properties with different inorganic fillers. Silicon carbide enhanced its wear resistance，while talc and micro glass bead improved its strength and tenacity.

The cathode materials，LiMn2O4，LiNi0.01Co0.01Mn1.98O4 and LiNi0.01Co0.01Mn1.98O3.95F0.05 for lithium ion batteries were synthesized by the sol-gel method. The synthesized materials were characterized with X-ray diffraction (XRD) and analytical scanning electron microscope (SEM). The as-prepared powders were used as cathode materials for lithium-ion battery，whose discharge capacity and cycle voltammogram properties were examined. The results showed that LiNi0.01Co0.01Mn1.98 O3.95F0.05 synthesized by the sol-gel method had higher initial capacity than LiNi0.01Co0.01Mn1.98O4 and better cyclic performance than that of LiNi0.01Co0.01Mn1.98O4 and LiMn2O4，which revealed that cation and anion dual-doped LiMn2O4 could gain better electrochemical properties of LiMn2O4 than only the cation-doped LiMn2O4.

With calcium lignosulfonate and PVA as the primary materials，the composite film of good mechanical properties and low water absorption was prepared. By adopting 5 factors quadratic orthogonal and rotational combination design，the effects of calcium lignosulfonate，PVA，formaldehyde，urea and borax on tensile strength，elongation at break and water-absorption rate were studied and relevant quadratic regression models were developed. The model analyses showed that all single，quadratic and mutual terms of the five factors affect the composite film properties to some extent. The results showed that the optimal condition for the composite film with good performance are follows: calcium lignosulfonate content 7 g，PVA content 14 g，formaldehyde content 10 g，urea content 7 g，borax content 2.5 g.

A series of N-maleyl chitosan(N-MACH) with different degrees of substitution (DS) were synthesized by acylation. The DS，intrinsic viscosity and weight-average molecular weight of the products were calculated. The products were characterized with IR and NMR spectroscopy. Compared with hyaluronic acid(HA)，the sample with high DS value (M-11) which had high weight-average molecular weight and high intrinsic viscosity exhibited better moisture-absorption，moisture-retention and antibacterial characteristics，and had the potential to prepare HA-like substance. The result provided the experimental data for the widespread application of chitosan.

The service life of catalyst is an important factor to decide the stability of the processing efficiency in the active carbon fiber (ACF) loaded titanium dioxide photocatalytic oxidation of organic waste. The methods such as ultraviolet ray with steam and the ultraviolet ray with ozone were studied for observing the condition of ACF and catalyst in the process. The catalyst life was determined according to the deactivation rate while the test was finished when the efficiency was stable. On the basis of tentative data，an effective method enhancing resistance to deactivation of titanium dioxide was presented.

In this article, MnO2/CeO2 catalyst was used to treat aniline wastewater by supercritical water oxidation (SCWO). The results indicated that the catalyst had an extremely high activity, which meant a lower temperature and pressure for the complete removal of aniline. Through analyzing the influence of temperature, pressure, residence time, and degree of excess oxygen, the optimal reaction condition was as follows：T=380 ℃, p=26 MPa, t=5 s, and degree of excess oxygen 15, under which the aniline content in the effluent comes to lower than 1 mg/L, and TOC value less than 28.56 mg/L, after reaction all of which met the discharge demand of GB 8979—1996.

The influence factors of chemical oxygen demand (COD) and removal effect of chroma during the wet air oxidation of degradation-resistant pesticide wastewater with high salinity were investigated. The results indicated that the reaction was influenced by reaction temperature，partial pressure of oxygen，reaction time and the acidity of the reaction system. 98.0% removal rate of COD and over 99.0% removal rate of chroma were achieved under the following reaction conditions： temperature 280℃，partial pressure of oxygen 4.2MPa, initial pH value of the system 2.0 and reaction time 150min. The research will be useful for the treatment of degradation-resistant pesticide wastewater with high salinity.

The effects of temperature，pH value，the concentrations of NH4Cl and NaCl on the adsorption of L-threonine on macroporous strong-acid cation exchange resin were investigated, and its adsorption isotherm at 25 ℃ was measured. The results showed that the adsorbance decreased slightly with rising temperature, and with increasing of pH, but decreased sharply with increasing NaCl and NH4Cl concentrations in aqueous solution. The maximum adsorbance at 25 ℃ was 70 g·kg－1 resin.

Quartz sand filtration with added ingredients was used to purify polluted NHD solution (a decarburizing/desulfurizing reagent mainly consisting of polyethylene glycol dimethyl ether，developed by Nanjing Chemical Industry Company). Quartz sand particle size of the filter was 0.60～0.80 mm，the thickness of the layer in the bed was 600mm.The ingredients were used to modify the surface of the solid impurities of the polluted NHD solution. The influence factors of filtration effectiveness，including ingredients particle size，the amount of ingredients，operating pressure were studied. The optimal condition of the filtration for polluted NHD solution being added in ingredients was determined. The experimental results showed that: at room temperature，ingredients particle size of 20～25μm，the amount of ingredients was m(ingredients): m(solid impurities)＝0.32，operating pressure = 0.03MPa，solid impurities removal was up to 92.3%，and the absorption property of NHD solution remained unchanged.

In this paper 2, 4, 6-trimethylbenzoic acid was synthesized by carboxylation of mesitylene in carbon dioxide–AlCl3 system. To optimize reaction conditions, experimental variables including reaction temperature and molar ratio were studied. The results showed the yield was as high as 83.3% when the molar ratio of mesitylene and AlCl3 was 0.7∶1 at room temperature.

N,N-dioctyl，-didecyl，-didodecyl chitosans with different backbone molecular weight were synthesized. A comparative study on the drug release behavior of corresponding self-assembled vesicles was carried out. Morphology studies showed that the curve of N,N-dialkyl chitosan was depended on the length of side chain，and the backbone molecular weight influenced the size of corresponding vesicle. Experimental results of drug release indicated that the drug-releasing rates of vesicles made from longer alkyl chain and/or larger backbone molecular weight of chitosan were slower than the others，and drug-releasing equilibrium amount was smaller as well. Moreover，both drug loading content and encapsulation efficiency of vesicles slightly increased with the length of alkyl chain and/or the backbone molecular weight.

Nitration of 3-fluorophenyl acetic acid (1) was accomplished by heating it to 70 ℃ with nitro-sulfuric acid in dichloroethane for 4 h and 5-fluoro-2-nitrophenyl acetic acid (2) was obtained with 67.8% yield. The obtained compound (2) was treated with borane-tetrahydrofuran (B2H6–THF) complex under nitrogen atmosphere in excessive THF for 18 h to give a kind of dark brown oil，followed by ammonolysis with NH3·H2O in autoclave at 100 ℃ for 6 h to produce 2-(5-amino-2- nitrophenyl) ethanol (3) in 84.4% yield. Catalytic hydrogenation of (3) under 0.6～0.7 MPa. over 10% Pd/C in anhydrous isopropyl alcohol at 70～80 ℃ for 12 h produced 2-(2,5-diamino phenyl)ethanol (4) with 64% yield. Compared with the method reported in literature，the overall yield of target molecule (4) was increased by 11%. The chemical structure of (4) was determined by HPLC-MS and 1H-NMR.

This review focuses on the progress of fouling prevention and enhancement of boiling heat transfer in evaporator with traditional and nanometer surface engineering techniques. The anti-fouling and heat-transfer enhancement functions of the heat-transfer low-energy surfaces，including the coatings surface with nanometer materials prepared by using the magnetron sputter，ion implantation，electroless plating，molecule self-assembly techniques are analyzed. It is considered that the difficulty is to prepare a surface that can both prevent fouling and enhance boiling evaporation. Scale formation and antifouling mechanism of treated surface for the liquid system with high viscosity，and the application of the nanometer surface engineering method should be emphasized in the future work.

For saving energy with waste heat recovery，thermo-acoustic engine is a promising way due to its simple structure，absence of pollution and low cost. The present experimental study investigated the mechanism of the self-exciting thermo-acoustic oscillation and the forced thermo-acoustic oscillation. In addition，the effects of stack structure and material property on the performance of the thermo-acoustic engine in terms of the critical temperature ratio were examined. It was found that the forced thermo-acoustic oscillation had much lower critical temperature for initiation and the minimal temperature was only 60℃. Ceramic material had better performance than steel and copper and the shorter the stack，the lower the initial temperature for oscillation.