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             Research areas

Ⅰ. Chemical reactor and technology of strengthening the process
    Works focus on the research of the mass transfer of the reaction process, update of the surface, modeling of the industrial process system, and the technology of integration optimization in the microcosmic, sub-microcosmic and macroscopical scale, which are the foundation of amplification of reactor engineering.
1. Studies on multiphase flow reactor and mixed properties:
(1) Studies on three-phase fixed-bed reactor and method of its amplification. In this study, metal-supported catalyst was prepared, and the mass transfer behavior between different phases in the synthesis of diphenyl carbonate was investigated, which are the theoretical foundations of industrial amplification.
(2) Studies on slurry reactor.
(3) Studies on furnace reactor. Using the industrial rotary kiln as research object, the engineering model of osculant manner of gas and solid was built up to strengthen transfer process, which the reduction and oxidation reactions can be realized synchronously.

2. Studies on strengthening technology of hypergravity reaction process:Works focus on the research of hypergravity fluid flow, mixed effect, mass transfer coefficient, surface area ratio of mass transfer and the reduction pressure and so on. The reliable supergravity reactor model was built up. The reactor can strengthen the desulphurization of flue gas, the controlling of industrial gas, the preparation of nano calcium carbonate and strontium carbonate.

3. Studies on strengthening technology of impacting flow reaction process:
(1) Studies on impacting flow reaction - precipitation technology. The immersion- cycle impacting flow reactor was developed to resolve the problem caused by short staying-time and bad micro-mixture of liquid phase. The characteristics of strengthened micro-mixture in liquid phase were investigated.
(2) Studies on technology of gas-liquid reaction of impacting flow. By using gas-liquid reactor of impacting flow, liquid-phase reaction can be processed rapidly without the restrictions of gas-film diffusion, and the macro-gas-liquid reaction or chemical absorption can be also processed with high-intensity. The large-scale production with small equipment was realized. The application of energy saving for the liquid of atomizer scattered on the pressure was investigated.

4. Studies on technology of supercritical reaction:
(1) Studies on supercritical coordination - the anti-micelle technology. The new coupling separation method which can strengthen the transfer process of the strong polar material was investigated.
(2) Catalytic hydrogenation of heavy oil in supercritical water. The resistance of mass transfer in phases was reduced due to the unique solubility of organic compounds in supercritical water and the property of being dissolved each other with the gas. High-active hydrogen can be provided for the hydrogenation of heavy oil through the vapor transformation reaction of supercritical water.

5. Studies on visible technology of reactor: In order to explore the microcosmic mixture phenomenon of reaction, the meso-scale interface mass transfer phenomenon was studied. The quantitative measurement and the kinetics of interfacial mass transfer were investigated, which provide strong support for strengthening the process of mass transfer.

Ⅱ. Petroleum refining and petroleum products processing

Works focus on the synthesis of DMC and diphenyl ester carbonate in non-homogeneous phase, denitrification of lube oil, the preparation of new asphalt material, polyolefin nucleation agent and modified polypropylene.

1. Studies on green technology in petrochemical industry: DMC and diphenyl ester carbonate were synthesized by using oxidation-carbonylation method in non-homogeneous phase. This method can avoid to using the highly toxic phosgene, and reduce corrosion, simplify the process of separation, improve separation efficiency and reduce reaction time and production costs.

2. Studies on denitrification and refining of lube and base oil: The basic nitride in the oil would affect the color of diesel, oxidated precipitate, the invariability of the lube oil and reduce the yield of the light oil by catalysis-decomposition and hydrogenation-decomposition. The new refining technique of lube oil was investigated, which can extend to the catalysis-decomposition and hydrogenation refining.

3. Studies on reparation of roads asphalt: The technique of asphalt materials preparation by improving the quality of existing asphalt material product was investigated. It can increase the appending value of asphalt products,and make best use of oil resources, especially in replacing the current technique transform of asphalt to Coke.

4. Studies on technology of petrochemical products processing:
(1) The development of polyolefin nucleation agents. New polyolefin nucleation agents were synthesized to replace imported products by using sorbitol and p-methylbenzaldehyde as starting materials , cyclohexane as solvent and methanol as the promoting agent.
(2) Modification polypropylene. From polypropylene, modified polypropylene was prepared through the solid phase graft. For example, grafted and chlorinated polypropylenes which can dissolve in the aromatic solvents were synthesized through the chloridization of the polymer in chlorinated water phase reactor.

Ⅲ. Comprehensive utilization and processing of resources

Chemical separation process is a very important research area in chemical engineering. Due to the predominance of abundant phosphate mineral, rare earth and natural vegetation resources in Hubei Province, works focused on extraction and separation of valent elements, the processing of phosphate, refining phosphate technology by wet method, extraction and purification of the active ingredient of vegetation, supercritical fluid technology and the separation of chiral compounds.

1. Studies on the extraction and separation of valent elements in mineral: In this research, the fractioning effect and the cerium loss effect in the distribution of weathered crust elution-deposited rare earth ore was investigated, through the studies of existing state of weathered crust elution-deposited rare earth ore on the clay and the distribution properties of the rare earth elements in different existing state. The insoluble rock phosphate can be converted to soluble phosphorus in the presence of pyrite by using acidithiobacillus ferooxidans.

2. Studies on technology of middle and low grade phosphate mine:
(1) Phosphate processing and refining technology of phosphoric acid by wet method. Industrial phosphoric acid and phosphate was produced through the decomposition of middle- or low-grade phosphate rock by using hydrochloride acid accompanying with purification technology. The influence of defluorination agents and filtration-assitant agents on defluorination efficiency was discussed, and the defluorinated technic parameters was confirmed. Wet phosphoric acid was purified by using chemical precipitation, solvent extraction and solvent deposition to satisfy with the national standards.
(2) The utilization of exhausted gas containing Fluorine. The products of superior-grade of Silicon, sodium fluoride with high appending value and good economic efficiency were prepared through the absorption of SiF4 by new absorbent. Silicon was also prepared by the synthesis technology of anhydrous hydrogen fluoride.

3. Studies on extraction and purification of active ingredient of plant: The leaching kinetics of active ingredients of block plant was investigated. The industrialization application of flavonoids and polysaccharides was realized. The new technology of the production of high-quality pectin using permna as raw materials was investigated, which can change the situation of the dependence of the import of high-quality pectin in long-term.

4. Studies on supercritical fluid separation technology: Ginkgo biloba terpene lactones are highly specific on the platelet-activating factor. The supercritical CO2 extraction of the Ginkgo biloba extraction (GBE) was investigated, and the influence of the carry agents on the extraction process and the operating conditions on the extraction efficiency was discussed. The reduced sugar, protein and other impurities was separated effectively by using a specific SAA-combined supercritical anti- micelle, membrane separation methods and so on.

5. Studies on the preparation and separation of chiral compounds: Works focus on the synthesis and enantioseparation evaluation of polymer type and dendritic chiral stationary phases. Thus, various chiral stationary phases have been synthesized. The separation capabilities of these chiral stationary phases have been investigated. The relationship between chiral selector structures and their separation capabilities was also discussed.

Ⅳ. Fine Chemicals and the Green Synthesis Technology

Aim to the requirement of the fine chemical industry and the international research foreland, also the comprehensive predominance of our university in chemistry and chemistry engineering, Works focus on the research of the synthesis, structure and function of fine chemicals, and the synthesis of biodegradable materials, new dope resins, pharmaceutical intermediates, chemical additives and so on.

1. Studies on biodegradable materials: The chain polarity and degradation rate of aliphatic polycarbonate can be improved by introducing carboxyl group in the end of aliphatic polycarbonate. Various aliphatic polycarbonates with different degradation rate were prepared by the designs of different branched degree. Various biomedical materials with different degradation rate were synthesized by the copolymerization of polyanhydride prepolymer and aliphatic polycarbonate prepolymer with functional end groups. The synthesis of microcapsules with uniform size distribution was also investigated by using reaction gel method.

2. Studies on the Synthesis of new dope resins: Works focus on the synthesis of photosensitive materials, water-soluble environment-friendly dope resins, such as modification of chlorinated polypropylene resins by maleic anhydride, synthesis of single component water-soluble polyurethane and so on. The synthesis water-soluble dope by using high-quality iron oxide, non-solvent dope by using superbranched polymer, and latex with core-shell structure was also investigated.

3. Studies on the synthesis of organic and inorganic fine chemicals: In the research of the organic fine chemicals, works focus on the synthesis of splitting chiral compounds, drug and pesticide intermediates of pyridine and pyrazole series, non-steroidal series drugs with anti-inflammatory properties and their intermediates, light initiator of photosensitive iodine salt and sulfur salt series and cosmetic series by dynamic splitting method. In the research of inorganic fine chemicals, works focus on the synthesis of food-grade phosphate, white carbon black, mica titanium pigment, active nano-zirconia, aluminum hydroxide, flame retardants of magnesium hydroxide, six partial sodium, active calcium hydroxide, new molecule griddle, doped antimony tin oxide, and cement additives.

Ⅴ. Drug synthesis

Based on computer-aided drug design, works focus on the studies and developments of new drugs and intermediates with market potential, high technic content which have independent intellectual property rights. The researches including the synthesis of medicine and intermediate, new efficient security pesticides, veterinary drugs, the development of chiral separation for drugs and so on are in progress.

1. Studies on the design and calculation of drug molecules:
Works focus on the designing of drug molecules based on the GABA receptor. It provides useful information for the new drugs with high-efficiency and safety through the simulation of interaction between ligand and receptor. A series of new metalloporphyrin photosensitive drugs have been synthesized and their antitumor and antibacterial activities were evaluated. The relationship between the molecule structures and their biological activities was also discussed, which is benefit for exploitation of new metalloporphyrin photosensitive drugs.

2. Studies on the synthesis technics of drugs: According to the characteristic of the drug synthesis technics, works focus on the studies of the mechanism of reaction, the optimization of the synthetic route and the reduction of the operating cost.

3. Studies on new preparation technics: New pesticide with independent intellectual property rights such as chlormethamidophos was synthesized, and it achieved industrialization. The synthesis of inartificial cigarette additives with strengthened AXL- health protection was investigated.

4. Studies on the method of asymmetric conversion splitting: Based on the method of asymmetric conversion splitting, the catalyst for asymmetric synthesis was prepared by using chiral ligand. The mechanism of asymmetric synthesis reaction through the catalysis of chiral nitrogen-oxygen dipole was investigated, which can provide useful information for asymmetric synthesis and splitting. For example, the synthesis of D (-) - p-hydroxyphenylglycine (D (-)-HPG) by asymmetric conversion splitting of amino acids.

Ⅵ. Biological mass-energy technology

Mass-energy is one of the most important energy resources, also is the only repoducible energy. Works focus on the preparation of the biotic diesel oil, the preparation of reductive sugar using the one-step method of the rice straw supercritical hydrolysist, processing the microwave of plant fiber and ionic liquid and synchronous fermentation preparation of fuel ethanol, the preparation of gas and liquid fuel by the method of the plant fiber of the high-temperature thermal cracking of straw are in progress.

1. Studies on the preparation of the biotic diesel oil:
Works focus on the synthesis of biotic diesel oil by using the technology of supercritical fluid. The phase behaviors, phase equilibrium and reaction mechanism of supercritical fluid and liquid fluid were investigated by using in situ IR technology in high pressure sample cells of the reaction system. Establish the coupling model describing the mass transfer process and reaction during the synthesis of the biotic diesel oil in continuous operation reactor, through investigating the reaction, balance and mechanism between supercritical fluid and liquid in the actual reaction system using advanced infrared in situ, and the impact of the reaction with different supercritical fluid.

2. Studies on the preparation of fuel ethanol by using microwave and fermentation methods:
Works focus on the preparation of fuel ethanol through the pretreatment of plant fiber by using both microwave and chemical methods. In this synthesis, ionic liquid has been used in the pretreatment of the raw materials of plant fiber. The speed of pretreatment was significantly increased; thereby the time of pretreatment was reduced.

3. Studies on the exploitation and utilization of the plant fiber of straw:
Works focus on the investigation of the process and characteristics of thermal weightlessness by using the thermal Fourier-transform infrared instrument in different wheat straw. The behavior and mechanism of gas separate-out of wheat straw was discussed. The influence of K , Ca2 and the metal salt minerals on pyrogenation was also investigated. Alcohol, carboxyl acids, aldehydes and other components were separated from the liquid oil, the distribution of the components in different solvents was discussed.

Ⅶ. Catalyst design and application

Works focus on the design and application of biologic-enzyme catalyst, hydrogenation-reduction catalyst and oxidation catalyst. The studies on electro-catalysis and environmental governance are also in progress.

1. Studies on the design and application of biologic-enzyme catalyst:
A serious of dinuclear copper complexes was synthesized by using macrocyclic compound as ligands. In this synthesis, metal ions with the function of redox were fixed through adjusting the distance of metal ions to improve the activity of catalyst. The DNA incision reagents were prepared for the catalysis-oxidation and hydrolysis-incision of DNA through the interactions of macrocyclic compound and DNA. The metal ions were fixed in the groove of DNA. Hydrolysis catalyst of ester type was also prepared through the coordination of ester and metal ions and the hydrogen bonding between ligand and ester.

2. Studies on the design and application of hydrogenation reduction catalyst:
Works focus on the research of the improvement of the surface activity through the increasing the adsorption of metal complex in the solid surface. Palladium-amine complex was prepared and adsorbed in the surface of activated carbon. Pd / C catalyst with high absorption volume was obtained by increasing the adsorption of metal palladium in the surface of activated carbon. The synthesis and application of various ruthenium complex catalysts was also investigated.

3. Studies on the design and application of oxidation catalyst:
Catalysis-oxidation catalyst was prepared by using metal complexes or metal ion-support, which can be used for the synthesis of pharmaceutical raw materials and drug intermediates. The catalyst can reduce emissions, save energy and improve oxidation efficiency. Furthermore, catalytic oxidant was prepared through chemical treatment by the absorption of copper or silver ions in the surfaces of active carbon, which can be used for the oxidation of starch in the air and so on.

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