Micromixing can improve transfer and reaction obviously. Besides，micromixers can be integrated easily with reactors，which makes reactions more controllable and efficient. The state-of-the-art developments and progresses on micromixing technologies are reviewed. The characteristics and advantages of micromixing as well as its prospective applications in chemical reaction are also discussed.

The developments of synthesis routes and production technologies of CL-20 in the last two decades are reviewed. The research achievements in condensation，debenzylation，nitrolysis and crystal transition are summarized，discussed and analyzed. Most of these achievements were obtained during the end of last century and the beginning of this century. In addition，the novel three-step synthesis route of CL-20，which appeared in the literature in 2004，is also introduced in some detail. CL-20 is obtained directly in this route，by nitration of the hexasubstituted hexaazaisowurtzitane derivatives formed by reaction of the α，β-dicarbonyl derivatives with other primary amines rather than benzylamine. This new technology might be significant in lowering the production cost of CL-20.

This paper reviews the new research progress of epoxidation of propylene with different oxidants. It includes propylene epoxidation with hydrogen peroxide in-situ synthesized using hydrogen and oxygen，photoepoxidation of propylene and oxygen and reactions with ozone and nitrous oxide as oxidants. It indicates that the major task is development of active and selective catalysts. The application prospect of new processes is also discussed.

Besides policy factors, five methods of cost-cutting of biodiesel are reviewed, including new raw material with higher oil content, shorter regeneration cycle, which is suitable for infertile soil and different climatic conditions; heterogeneous catalysts；new technologies (e.g. supercritical methanol and ultrasonics) ；higher added value utilization of by-product glycerin with simple method (propylene oxide chloride, 1,3-propanediol, pyruvic alcohol etc. ) and moderate scale of production.

The advances in the synthesis and application of the mesoporous sieves are summarized in this paper. The methods of synthesis and modification of mesoporous molecular sieves in the different families of MCM，HMS，MSU，SBA，etc. are introduced. For example，heteroatom doping，grafting organic group，pre-disposal of silica resource，mixed templates result in good catalytic performance and selective oxidation properties of mesoporous molecular sieves. The performance and characteristics of some novel mesoporous molecular sieves are introduced. The present application of mesoporous molecular sieves in chemical industry is reviewed.

This review starts with a brief overview of the molecular biology techniques applied to the bioremediation of soil. The principles of the catabolic gene probe analysis of microbial community, 16S rRNA sequence analysis and fluorescent in situ hybridization (FISH) and their applications to monitoring the fate of contaminant-degrading microorganisms, detecting catabolic gene and analyzing the changes of microbial community in contaminated soil are highlighted. The problems and prospects of these techniques are discussed.

Pervaporation，as a promising membrane separation technology，has shown great advantages on in-situ recovery of biofuel such as ethanol from the fermentation systems. In the fermentation process，the inhibition of ethanol on the microorganism activity could be reduced by removing ethanol through pervaporation，and the purity of ethanol could reach a high value via subsequent dehydration. The pervaporation technology for bioethanol recovery is reviewed in detail with emphasis on pervaporation membrane materials，integrated processes，recent applications and economic aspects; and the development trend is prospected.

The mechanism and progress of the technologies of improving surface flow of membrane for alleviating and controlling membrane fouling are introduced，and the advantages and disadvantages of these technologies are compared and analyzed. The ideas for further research are presented.

The study on the inorganic zeolite and organic polymer membranes for separating xylene isomers in recent years is reviewed，and the merits and demerits of various types of membranes are presented. Based on comparing these membranes，the prospect of membrane separation for xylene isomers is presented.

The recent research achievements of airlift reactor are summarized. The structure improvements，such as basic structure，gas distributor and various internals，etc. are introduced. The influence operating conditions on the hydrodynamics and mass transfer performance of ALR，including superficial gas velocity，the properties and level of liquid phase，the properties and content of solid phase，as well as electrolyte and magnetic field，are discussed.

Vanadium dioxide（VO₂）single crystals undergo a first order transition from semiconductor to metallic state at approximately 68℃. Associated with the phase transition are the considerable changes in its electrical，magnetic and light characteristics，it can be widely used in thermal，electrical switching elements，optical storage media devices and sensitive sensor and solar energy control of windows. The film of VO2 stably exists in a narrow range of composition，and it is difficult to get pure VO₂. Much work has been done to investigate the film of VO2. This paper summarizes the recent progress of the preparation method of VO2 thin film since 2000 and the influence of various preparation methods upon the properties of the thin film are compared. To expand its application，the newest development of the VO₂ thin film is introduced，and its future research is also discussed.

Beginning with classification of ultraviolet ray and its damage to human skin，the theory and method of resisting ultraviolet ray by fabric finishing agent are presented. The characteristics，synthesis method and application of various ultraviolet ray absorber are reviewed，and the recent progress of ultraviolet ray absorber is summarized. Finally，the future development in this field is presented.

In this paper，the concepts，classification and characteristics of conductive polymer，composite particles，and core-shell conductive polymer composites are introduced. The preparation of three kinds of core shell conductive polymer composites are described in detail，such as polymer coating inorganic conductive particles，structural conductive polymer coating inorganic particles or polymer，and metal particles coating polymer. The application and development prospect of such conductive composite particles are also presented.

Thermal adaptation composite materials are composite materials with required thermal conductivity or coefficient of thermal expansion. This paper reviews the research progress of rapid thermal response composite materials with high thermal conductivity and composite materials with controllable coefficient of thermal expansion. The application of thermal adaptation composite materials in electronic device cooling is introduced.

The study and application of microwave technique in bulk polymerization，solution polymerization，emulsion polymerization and functional polymer polymerization are reviewed. As a new and effective way of heating，microwave technology can reduce reaction time and energy consumptions，increase reaction rates，yields and selectivities for various chemical reactions. It shows a picture of the future development in green synthesis of polymer.

Single metal and multiple metals doped La-hexaaluminate were synthesized by reverse microemulsion in the system of water / Triton X-100 / n-hexanol / cyclohexane. The effects of doped elements on the phase，specific surface area and activity for methane combustion were investigated by means of XRD and BET. The results indicated that among LaMxAl12-xO19 catalysts，the catalyst with a Mn iron (x=1) was the best，The introduction of single Mn could improve the catalytic activity at a low temperature and make methane light-off temperature shift to a lower value; Single Fe doped La-hexaaluminate could make methane completely convert at a lower temperature; Fe and Mn doped La-hexaaluminate had the highest activity at both low temperature and high temperature; The stability of LaMnFeAl10O19 at a high temperature was also excellent.

Using butyl methacrylates, styrene as monomers, propylene glycol diacrylate as crosslinking agent, AIBN as initiator, the high oil-absorbing resin was synthesized by suspension polymerization. The influences of stirring rate, the amount of dispersant, polymerization temperature, the ratio of monomers, the amount of crosslinking agent on the particle size of the resin were investigated. The optimum conditions were as follows: the ratio of monomers 1.6∶1；the amount of dispersant 0.1%－0.2%; the amount of crosslinking agent 1%; stirring rate 200－300 r/min; polymerization temperature 70℃; reaction time 6h; the particle diameter of the resin was moderate. The oil-absorbing ability of the resin was more than 20(g/g).

A new type of flocculant - polyzinc silicate sulfate (PZSS) with different concentrations of SiO2，Zn/Si molar ratios，polymerization times and pH values were prepared and the effects of such preparation parameters on the structure were studied with IR spectroscopy. The results showed that the structure of PZSS was dependent on the concentration of SiO2，molar ratio of Zn/Si，polymerization time，pH value and so on. It was proved by IR spectroscopy that Zn2+ and hydrolyzed ion were chelated with polysilicic acid to produce the polymer of zinc-silicon. The reaction was not the simple physical blending，but the chemical reaction forming the inorganic polymer with special structure. The better flocculating efficiency was resulted mainly from the chemical and physico-chemical factors among the components.

This paper analyzes the factors affecting detection results and optimizes experiment conditions based on a new integrated intelligent instrument for evaluating rapidly scale inhibitor performance. The optimum conditions were as follows: 0.100mol/L sodium carbonate, 0.0126mol/L calcium chloride, keeping constant solution temperature within ±0.25℃ and detector cleaning procedure. In the given conditions, the evaluation results of PBTC, HEDP, ATMP etc showed that the method was perfect in stability and repeatability and could effectively meet the needs of the accurate and rapid evaluation of scale inhibitor performance.

The preparation of gas hydrate in a novel rotating packed bed reactor was investigated. At 5 MPa and 277.15K，the experiments were conducted to examine the effects of high gravity factors β，liquid to gas ratio on the capacity of gas hydrate. Experimental results indicated that the capacity of gas hydrate increased with increasing high gravity factors β. However，the effect was not obvious at a high gravity factors greater than 120. The capacity of gas hydrate increased firstly with increasing liquid to gas ratio，and then gently decreased. The optimum process conditions were as follows: liquid to gas ratio about 10 L/m3. The mechanism of hydrate formation by high gravity was studied with the theory of crystal chemistry. Compared with the traditional system，the high gravity system accelerated the process of dissolution，nucleation and crystal growth to a great extent，and gas capacity was also significantly increased.

With increasing ecological and environmental concerns，the use of halogenated flame-retardants are being limited and halogen-free alternatives will be developed rapidly. Resorcinol bis (dipheny1 phosphate) (RDP) is a non-halogen aromatic oligomeric phosphate flame-retardant and flow modifier. Its high thermal stability and low volatility make it ideal for use in applications where high processing temperatures are required. In this paper，RDP was used as a single flame retardant of resilience polyurethane foam，and used together with exfoliated graphite (EG) as synergistic flame retardant. The limited oxygen index (LOI) of foam specimen was tested according to the GB 2406—80 standard and vertical flammability was tested in terms of CCAR25.853 (b) Flammability Teat Method.

A novel method of synthesis of a mixture of methyl-vinyl-cyclosiloxane and methyl-cyclosiloxane could be achieved by cracking the hydrolysate of methyl-vinyl-dichorosilane and dichoromethyl-silane using KOH as catalyst by orthogonal test design. The effects of the reaction conditions on cracking yield, the quantity of total methyl-vinyl-cyclosiloxane and V1D3 were investigated. The results showed that the optimum cracking conditions were as follows: 1wt% of the concentration of catalyst, - 0.980 MPa of vacuum meter and 75 min of reaction time. The mechanism of cracking was discussed.

SPES/PSF ultrafiltration membrane was successfully prepared by the blend method, with sulfonated polyethersulfone (SPES) and polysulfone (PSF) as membrane material. The preparation technology of SPES/PSF blend ultrafiltration membrane was studied by means of uniform experiment design. The model equation of fluxes was obtained by means of regress analysis. On the basis of the model equation, the effects of blend ratio, polymer concentration，additive concentration etc. upon the fluxes were investigated by single factor simulation analysis. It was found the fluxes of the optimum SPES /PSF membrane was 93.1L/(m2·h) and 93.37% rejection to PVA.

Molecularly imprinted polymers (MIPs) were prepared via precipitation，with methacrylic acid as the functional monomer and ethylene glycol dimethacrylate as the cross-linker in acetonitrile solution using caffeine as the template molecule and 2, 2′-azobis-isobutyronitrile as the initiator. The effects of the amount of cross-linker，functional monomer，initiator，the volume of solvent were examined. Equilibrium binding experiments was used to investigate the binding ability to template molecule，and the results revealed that the MIPs showed specific binding affinity to caffeine.

Lipolase was chemically modified with fatty acids. The hydrolysis activity，interfacial hydrolysis activity and esterification activity in hexane of the modified lipolase were assayed. The results showed that the interfacial hydrolysis activity and esterification activity of the modified lipolase increased apparently，although the hydrolysis activity decreased a little compared with the unmodified lipolase. The surface tension and the interfacial tension of the modified and unmodified lipolase were also investigated. The surface tension and interfacial tension of the solution of modified lipolase were much lower than those of unmodified lipolase. The Langmuir-Blodgtt monolayer film of modified lipolase was obtained by the use of LB technique and the surface pressure was higher than that of unmodified one，showing that it was much easier to congregate on the interface. All results showed that lipolase modified with fatty acids had an enhanced activity on the interface，making it advantageous to use modified lipolase in organic solvent and two phase system.

This paper presents a new half-ellipse fixed valve tray，which has some improvements on traditional fixed valve trays. The hydrodynamic and mass transfer performance of half-ellipse fixed valve tray，sieve tray and F1 valve tray was experimentally studied with air-water-oxygen system in a 1200mm stainless steel column. The results showed that the half-ellipse fixed valve tray possessed，less entrainment，lower weeping and higher efficiency，but a little higher pressure drop than sieve tray as well as much lower pressure drop，less entrainment，and higher efficiency，but higher weeping than F1 valve tray.

In order to improve the microorganism fermentation process of producing glutamine，an electrodialysis method was developed to separate glutamic acid and glutamine. The feasibility of this method was predicted through calculating cation and anion concentrations in typical amino acid mixture solutions，and then validated by electrodialysis experiment. Furthermore，the influence of ammonium sulfate on the separation of amino acids mixture was investigated. Through the theoretical prediction and experiment tests，electrodialysis method could be used directly to separate glutamic acid and glutamine，and a little ammonium sulfate in the mixture benefited the separation process.

The extraction process for the production of hydrogen peroxide via the anthraquinone route was simulated by chemical process simulation software——PRO/Ⅱ 7.1. The operation result and technical parameters of the extraction column in a yield of 100 000 t/a were confirmed. The effect of the technical parameters was discussed. The predicted values were compared with the actual production data and the agreement was found to be quite satisfactory for the production of hydrogen peroxide in a sieve plate column，which could be a reference for improving the extraction column and expanding the production of hydrogen peroxide.

The low degree of substitution carboxyl methyl amphoteric starch was synthesized by wet reaction process with cassava starch，3-chloro-2-hydroxypropyltrimethylammonium chloride（CHPTMA）and sodium chloroacetate as material，50% ethanol aqueous solution as medium，and NaOH as catalyst. By single factor experiment，experiment studied on the effect on the dosage of NaOH、CHPTMA、sodium chloroacetate 、temperature and time to reaction. The optimum conditions were followings：The mole ratio of sodium hydroxide to sodium chloroacetate and CHPTMA was 2.22，temperature was 40℃，time was 4 hours，the dosage of sodium chloroacetate was 2.5%，and the dosage of CHPTMA was 3.5%.The sample′s cationic degree of substitution was 0.028，anionic degree of substitution was 0.011 .The samples had distinct effect on strengthening in papermaking experiment.

The numerical study on the performance of a double flow-pass tube-fin heat exchanger was performed with different air and refrigerant inlet parameters. An optimization design of circuit arrangement was presented and was validated by the numerical simulation results. The results showed that there was an optimal ratio between the two flow-pass tube diameters in the heat exchangers. In this paper the optimal ratio was 0.8 and with this optimal ratio，the heat transfer performance of the heat exchanger could be enhanced by 6%~11%，at the same time the pressure drop of the air side could be decreased by 2%.