81results about How to "Good prospects for industrial application" patented technology

Disclosed is a method for synthesizing cyclic carbonate. It uses zinc salt and glyoxaline halogeno salt, pyridine halogeno salt ion liquid and one kind of quaternary ammonium salt as binary catalyst, with the temperature of 50-200deg.C and CO2 pressure of 0.5~5.0 MPa, catalyse CO2 and eepoxide to generate cyclic carbonate . No need for adding any organic solvent in the course, through simple vacuum distillation, the separation of catalyser and products can be realized, the catalyser can be reused and keep its activity, with selectivity higher than 98% and conversion frequency higher than 5000h-1. It is an highly effective, economical catalyzer system with environmental protection and convenient wise, has bright future in industry.

The invention relates to a nano composite functional coating, a preparation method thereof and a use thereof. The coating comprises film-forming resins, modified nano zinc oxide, modified nano molybdenum disulfide, a nano material additive, a micro powder additive, a solvent, a diluent, a curing agent and auxiliaries in a certain mass ratio. The novel nano composite functional coating shows excellent high temperature resistance and abrasion resistance, and especially meets the environment requirement for high-temperature work; besides, the wear rate of the material is reduced and the service life of the material is prolonged; and therefore, the nano composite functional coating has wide industrial application prospect.

The invention relates to a single bed self-heating pyrolytic gasification combustion reactor and a pyrolytic gasification combustion method and is characterized in that pyrolytic / gasification reaction and combustion are separated in a reactor; the heat in a combustion area is transferred to a pyrolytic / gasification area with the help of the internal circulation of a heat carrier; solid fuels are brought into a guide tube (4) by the pyrolytic gas which forms high speed jets when entering the guide tube to entrain high temperature inert bed materials in a combustion bed and enter the guide tube from a lower entrainment hole (1); the solid fuels are rapidly heated in the guide tube to the temperature of 450 to 950 DEG C which is needed by the pyrolysis and gasification so as to generate the reaction product gas such as carbon monoxide and hydrogen discharged from an export of the pyrolytic bed; the residual carbocoal and inert bed materials are separated in the pyrolytic bed (5) in an inertial way and enter an annular gap material leg (3) of the guide tube and a separated vertical tube after falling to a conical partition plate (6) and then go into the combustion bed (2) to form particle internal circulation; the bed materials and char discharged from the reactor are resent into the combustion bed to be reused through a feeding back device.

The invention discloses a preparation method of an acid modified attapulgite clay catalyst, and the modified attapulgite clay catalyst is applied to removal of olefins in mixed aromatics. The acid modified attapulgite clay catalyst of the invention is prepared from commercial attapulgite as a precursor through sulfuric acid modification; and the preparation method is simple, and does not produce acidic wastewater emission. The catalyst exhibits excellent olefin removal performance, and bromine index of aromatic hydrocarbon removed with olefin can be reduced to lower than 20mgBr / 100g; therefore, the acid modified attapulgite clay catalyst has good prospects for industrial application.

The invention discloses a method for improving the uniformity of axial resistivity of czochralski silicon. The method comprises the steps as follows: (1) melting a polycrystalline silicon raw material and a solid doping agent in an argon atmosphere to obtain stable molten silicon; (2) introducing seed crystals into the stable molten silicon, and conducting constant diameter growth on the crystals after necking and shouldering processes; and (3) during the constant diameter growth period, adding dopant gas with the conductive type opposite to that of the solid doping agent until the growth of the czochralski silicon is fulfilled. According to the method, the type and the usage amount of the dopant gas are convenient to control, various required impurity concentration distributions can be obtained, the utilization rate of the czochralski silicon is increased, and the uniformity of the resistivity of the czochralski silicon is remarkably improved.

The invention discloses an MOFs (metal-organic frameworks)-cross-linked polyethylene glycol diacrylate mixed substrate membrane, a preparation and an application. PEGDA (polyethylene glycol diacrylate) is selected as substrate membrane materials, MOFs are selected as fillers, and the MOFs-cross-linked polyethylene glycol diacrylate mixed substrate membrane is prepared by ultraviolet crosslinking and curing under induction of photo-initiators. The mixed substrate membrane has remarkable performances (PCO2>160Barrer, alpha CO2 / N2>70, alpha CO2 / CH4>40) for separating mixed gas of CO2 / N2 and CO2 / CH4. Compared with a pure cross-linked polyethylene glycol diacrylate membrane, the MOFs-cross-linked polyethylene glycol diacrylate mixed substrate membrane has higher CO2 gas permeability and separation selectivity, and can be applied to purification of flue gas and natural gas.

The invention discloses a bacterial strain for producing lycopene and an application of the bacterial strain, and belongs to the field of synthetic biology. The bacterial strain for producing lycopene contains a mevalonate pathway and a related gene which is synthetized by the lycopene optimized by a codon; and the synthetic gene sequence of the lycopene optimized by the codon is shown in SEQ ID NO.1-3. The bacterial strain can be used for producing the lycopene; and a seed solution of the bacterial strain is inoculated into a culture medium containing a carbon source to carry out prokaryotic expression, so as to obtain the lycopene. The gene synthetized by the lycopene is optimized by the codon or each protein of the mevalonate pathway is closer to A to B:ERG13:tHMG1:ERG12:ERG8:MVD1:Idi=1:10:2:5:5:2:5; and production of the lycopene can be further promoted. By adopting the bacterial strain, the yield of the lycopene can be greatly improved to over 1g / L; and the fermentation cycle is shortened by over 50%.

The invention discloses a novel method for preparing abiraterone acetate. The method comprises the following steps of: hydroxyl protection, Aldol reaction, dehydration reaction, deprotection and acetylation. According to the method, the heavy-metal reagent, the strict anhydrous and anaerobic equipment and the expensive alkyl boron reagent are not used, thus the cost is reduced greatly. The method is suitable for mass industrial production.

The invention discloses a method for preparing high-grade resin by catalytic hydrogenation and belongs to the technical field of resin catalytic hydrogenation. The method is characterized by comprising the following steps of: taking load type noble metal palladium as a first-section hydrogenation catalyst and taking framework nickel as a second-section hydrogenation catalyst; utilizing a two-section kettle type or a fixed bed continuous hydrogenation way to carry out hydrogenation reaction on the resin; and improving a resin color phase of the prepared hydrogenated resin to be water-white and have good heat stability. The method disclosed by the invention has the advantages of simple process and high catalyst activity, improves the resin chromaticity, improves the heat stability, slightly reduces the softening temperature, and has good economic benefits and wide industrial application prospect.

The invention provides a recombinant strain for producing glycolate based polymers and application of the recombinant strain. The recombinant strain is obtained through introducing PHB biosynthesis operons phbCAB, polyhydroxyalkanoate particle binding protein genes phaP, CoA-transferase genes pct, isocitrate lyase genes aceA, isocitrate dehydrogenase kinase genes aceK and glyoxylate reductase genes ghrA into host E.coli (Escherichia coli); and the E.coli is E.coli JM109 or E.coli JM109ldhA. The recombinant strain can be used for synthesizing two kinds of glycolate based polymers: glycolic acid, lactic acid and 3-hydroxybutyric acid copolyesters, and glycolic acid and 3-hydroxybutyric acid copolyesters; the biomass of the recombinant strain in the shaking culture and the yield of polymers can also achieve a higher level; and better industrial application prospects are realized.

The invention relates to a Janus type material with one-way water transport property as well as a preparation method and application of the Janus type material. According to the preparation method, abase material is soaked in an aqueous solution containing an acidic organic matter and a water-soluble ferric salt for modification treatment, polydimethylsiloxane is sprayed to one surface of the base material under the action of water protection, so that one surface of the prepared Janus material is super-hydrophilic, the other surface of the prepared Janus material is super-hydrophobic, and theJanus material shows an extremely asymmetric wettability; therefore, directional water transmission can be achieved in air or oil. The Janus type material can be applied to the fields of unidirectional moisture conduction or moisture absorption and sweat releasing fabrics, oil-water separation, water collection in oil and the like.

The invention discloses an alpha, beta-unsaturated carboxylic ester compound and a preparation method thereof. According to the invention, reaction is performed in air by using transition metal Cu as a catalyst. The adopted transition metal Cu as the catalyst is cheap, so that the production cost is lowered, the reaction condition is mild due to the catalyst system, and the product treatment, separation and purification are simple. As alcohols which are cheap, and easy to obtain are used as the raw material, the synthesis cost is greatly lowered, meanwhile, the requirements for reaction conditions are very low, and the compound and preparation method have excellent study and industrial application prospects.

The invention relates to a novel micelle drug-loaded system formed by an amphiphilic segmented copolymer and curcumin. The amphiphilic segmented copolymer comprises a hydrophilic chain segment and a hydrophobic chain segment; the hydrophilic chain segment is polyethylene glycol monomethyl ether, the hydrophobic chain segment is polycaprolactone, and the hydrophobic chain segment is terminated by a hydrophobic group. The hydrophobic group is the group having a tertbutyloxycarbonyl or phenyl ring structure, compatibility of the medicine molecules and the hydrophobic chain segment in the segmented copolymer is improved, mutual effort is increased, at the same time, the hydrophobic group provides large space for accommodating the medicine molecules, the prepared micelle can effectively inhibit the medicine molecules in a core of the micelle, and the medicine molecules are not easy to dissolve out, so that the drug-loaded micelle having high stability can be obtained.

The invention relates to a novel micelle drug load system formed by an amphiphilic segmented copolymer and docetaxel. The amphiphilic segmented copolymer comprises a hydrophilic chain segment and a hydrophobic chain segment, the hydrophilic chain segment is polyethylene glycol monomethyl ether, the hydrophobic chain segment is polycaprolactone, and the end group of the hydrophobic chain segment is terminated by a hydrophobic group. The hydrophobic group is tertbutyloxycarbonyl phenylalanine, so the compatibility of a drug molecule with the hydrophobic chain segment in the segmented copolymer is improved, the interaction between the drug molecule and the segmented copolymer is increased, a large space is provided for accommodating the drug molecule, and a prepared micelle can effectively restrict the drug molecule in the core of the micelle to make the drug molecule difficultly dissolved out, thereby a drug loaded micelle with high stability is obtained.

The invention relates to the field of single-wall carbon nanometer tubes, in particular to a method for obtaining a large number of semi-conductive single-wall carbon nanometer tubes through combining post treatment oxidation with chemical gas-phase deposition in-situ weak oxidation. Trace oxygen is introduced in the process of chemical gas-phase deposition growth of the singe-wall carbon nanometer tubes, and then, the prepared single-wall carbon nanometer tubes are oxidized in the air at the proper temperature. Ferrocene is used as a catalysis precursor, hydrogen is used as carrying gas, sulfur powder is used as growth promoters, carbon source gas and trace oxygen are simultaneously introduced at a certain temperature for carrying out the growth and in-situ weak oxidation of single-wall carbon nanometer tubes, the obtained single-wall carbon nanometer tube samples are oxidized for a long time in the air atmosphere at the low temperature, and the oxidized samples are soaked into hydrochloric acid solution to remove catalyst particles, are cleaned and dried. The method realizes the mass preparation of the single conductive (semi-conductive) single-wall carbon nanometer tubes and solves the problems that the damage to the intrinsic structure of the single-wall carbon nanometer tubes in the existing chemical and physical method separation process is serious, and the like.

The invention provides a method and a special-purposed strain used for producing alpha-ketoglutaric acid. Lichtheimia corymbifera D1 provided by the invention has a collection number of CGMCC NO.4974. The lichtheimia corymbifera D1 provided by the invention has good strain stability, good alpha-ketoglutaric acid production capacity, relatively low fermentation cost (substrates have wide source and low cost), and good industrialized application prospect. The invention also optimizes the fermentation conditions of lichtheimia corymbifera D1. The method provided by the invention is used for producing alpha-ketoglutaric acid, and has good scientific research value and industrial application prospect.

The invention relates to a method of improving interface bonding performance of a carbon fiber enhanced epoxy resin-based composite material based on a curing agent modified sizing agent. The method comprises the following steps: mixing a curing agent, epoxy resin and an organic solvent uniformly to obtain the sizing agent; removing agents of carbon fibers; passing the carbon fibers to a slurry groove filled with the sizing agent by adopting an impregnating method and drying the carbon fibers; carrying out temperature treatment on the sized carbon fibers; and then compounding the carbon fiberswith an epoxy resin matrix to prepare the carbon fiber enhanced epoxy resin-based composite material. Under the premise of not losing the mechanical property of the carbon fibers, an interface area,the crosslinking density of which is changed gradiently is formed between the fibers and the resin, the interaction degree between the sizing agent and the active groups on the surfaces of the fibersis increased, the inner stress is uniformly transferred in the composite material, and the interface bonding performance of the composite material is improved. The method has the advantages of being simple and feasible, good in repeatability, low in cost, high in efficiency, suitable for industrial production and the like.

The invention relates to a catalyst system for preparing cyclohexene by benzene selective hydrogenation, and a method for preparing cyclohexene by benzene selective hydrogenation. The method for preparing cyclohexene by benzene selective hydrogenation is implemented by catalyzing with the catalyst system composed of nanometer Ru catalyst, alkaline substance M, zinc salt and water. The nanometer Ru catalyst with microcrystalline size of 3-6 nm is prepared from NaOH, RuCl3 and polyethylene glycol (PEG) by co-current co-precipitation method. The alkaline substance M can be hydroxide, oxide or alkaline organic substance of alkali metal, alkaline earth metal, transition metal or rare earth metal. The zinc salt can be zinc sulfate, zinc nitrate or zinc chloride. Ru catalyst / M / zinc salt weight ratio is 1:(0-10):(20-30), and Ru / water weight ratio is 0.5-1%. At 150 DEG C and 5.0 MPa, after reaction for 15-25 min, when the benzene conversion rate is 40-60%, cyclohexene selectivity is 75-85%, and cyclohexene yield is 35-50%.

The invention relates to a dammarane type triterpene glycoside compound obtained by extracting and separating from tetraploid gynostemma pentaphyllum, and a preparation method and application of the dammarane type triterpene glycoside compound. The compound, and optical isomers, medicinal salt derivatives and solvates of the compound have a purpose of preparing an anti-inflammatory drug, can be applied in self-forms, and can also be applied by forming drug compositions with acceptable carriers in pharmacy; the preparation method is simple and easy to operate; and the obtained compound is high in purity, and has a good economic benefit and an industrial application prospect.

The invention provides a seedling strengthening and rapid propagation method for polygonatum cyrtonema, which comprises the following steps: (1) cutting polygonatum cyrtonema cluster buds into blocks, inoculating a proliferation, seedling strengthening and propagation medium with the blocks for subculture, and carrying out repeated cutting and subculture for multiple times to obtain robust cluster buds; (2) cutting the robust cluster buds into bud tubers with adventitious buds, and inoculating a rooting culture medium with the bud tubers for rooting culture; (3) putting rooted test-tube plantlets in a culture room for hardening under light, taking out the rooted test-tube plantlets from a culture bottle, and washing off the culture medium at the roots of the rooted test-tube plantlets; then, soaking the rooted test-tube plantlets with carbendazim, and after soaking is completed, planting the rooted test-tube plantlets into matrix mesh bags, and watering the rooted test-tube plantlets sufficiently with root fixing water; and finally, culturing the rooted test-tube plantlets in a greenhouse. According to the method, the polygonatum cyrtonema buds are subjected to induced differentiation to obtain the cluster buds, the operation is simple, the culture cost is low, the propagation efficiency is high, tissue culture industrialized production can be achieved, and the method is an important way for excellent germplasm preservation and seedling batch production of polygonatum cyrtonema.

The invention discloses a multi-metal crosslinked matched catalyst for degrading unsymmetrical dimethylhydrazine as well as a preparation method and an application of the multi-metal crosslinked matched catalyst. The multi-metal crosslinked matched catalyst is represented as a formula M-N, wherein, M is at least two metals from transition metals and / or rare earth metals, N is a modified chitosan carrier, and the ratio of the total mole number of M to the weight of N is (0.5-5):100. The preparation method comprises steps as follows: at least two metals from the transition metals and / or rare earth metals in the ratio are taken as active ingredients and are loaded to the modified chitosan carrier after the temperature is adjusted, washing, drying, grinding and sieving are performed, and the multi-metal crosslinked matched catalyst is obtained. The multi-metal crosslinked matched catalyst has the mimic enzyme catalysis activity similar to the bio-enzyme function, can degrade unsymmetrical dimethylhydrazine wastewater at the room temperature, has high catalytic activity, can be recycled, and can be particularly used for treating the unsymmetrical dimethylhydrazine wastewater with high concentration without dilution and initial pH adjustment.

The invention discloses a method for preparing regenerated rubber from scrap tires, belonging to the field of regenerated rubber synthesis. The method comprises the following steps: carrying out screening culture on microbes in coal mine sewage by using a self-made culture medium, pouring the microbial hypha suspension on a pretreated tire surface, and treating the frozen and pulverized tire powder by using the cultured black bacterial colony as a fermentation strain until the tire powder is sufficiently desulfurized; and by using benzene disulfide and butyl sulfhydrate as vulcanizing agents, carrying out immersion swelling, and heating for vulcanization, thereby obtaining the regenerated rubber. The sulfides in the tires are enriched and absorbed by the microbes in the preparation process, so that no sulfur-containing exhaust is generated, and no wastewater containing petroleum, volatile phenols or other harmful substances is generated, thereby avoiding generating environment pollution.

The invention relates to a desalination asymmetric CDI module and a desalination method using the same, and belongs to the technical field of water treatment. The invention discloses a desalination asymmetric CDI module. The module comprises an anode and a cathode; the two electrodes are obtained by drying graphite flakes and slurry coated on the graphite flakes; the slurry is obtained by mixing an electrode material, conductive carbon black and a binder in a solvent; according to the anode, the electrode material is nitric acid treated activated carbon or commercial activated carbon; the binder is quaternized polyvinyl alcohol; according to the cathode, the electrode material is ionic liquid modified activated carbon or commercial activated carbon; and the binder is carboxymethyl cellulose or sulfonated carboxymethyl cellulose. An activated carbon electrode prepared from the water-soluble charged polymer binder provided by the invention does not need an expensive ion exchange membrane, but can achieve a desalination effect similar to that of a membrane capacitive deionization module, so that the activated carbon electrode shows a good industrial application prospect.

The invention discloses a laccase gene Lac6 and expression protein and application thereof. The DNA sequence of the laccase gene Lac6 is shown in SEQ ID NO.1. According to the laccase gene Lac6 and the expression protein and application thereof, shown by research on the decoloration of recombinant coprinus comatus laccase through 13 kinds of dyes, the decoloration action of recombinant laccase Lac6+10AA mainly occurs in the beginning 1-2 hours of reaction, the decoloration speed is retarded along with time, the decoloration effect of pure laccase is obviously better than that of a crude laccase solution, and the decoloration ratio can be increased after HBT is added into crude laccase or pure laccase; the Lac6+10AA has a relatively good decoloration effect on remazol brilliant blue and malachite green, and the decoloration ratio can reach over 90% after the mediator HBT is added. The laccase gene Lac6 has a very good industrial application prospect and can generate relatively good economic and social effects.

The invention discloses a method for obtaining liquid paraffin, gasoline and diesel oil via extraction of a shale oil, and belongs to the technical field of petrochemical engineering and energy sources. The method is characterized by comprising the following steps: separating the shale oil in a reduced pressure distillation manner so as to obtain a distillate oil below 420 DEG C and a residual oil, wherein carrying out hydrogenation dewaxing on the residual oil and the distillate oil below 420 DEG C together in a fixed bed reactor filled with a sulfide catalyst after the catalytic distillation cracking of the residual oil; distilling a reaction product so as to obtain the high-quality liquid paraffin and high-quality gasoline and diesel distillate oils. According to the method, the shale oil is treated by using a reduced pressure distillation-hydrogenation dewaxing coupling process, so that the liquid paraffin, the gasoline and the diesel oil which are good in quality are obtained. The specific gravity of the shale oil is decreased and the byproducts with economic values are increased by extracting the liquid paraffin, so that the economic benefit is improved. The method is simple in process, low in energy consumption and high in environmental friendliness, realizes investment saving and is favorable for carrying out deep processing on site so as to increase additional values, thereby providing a new way for the utilization of the shale oil. In addition, the method is good in economic benefit and industrial application prospect.

The invention belongs to the field of synthetic biology, and relates to genetic engineering bacteria producing longifolene. The genetic engineering bacteria is a recombinant Escherichia coli containing related longifolene anabolic pathway genes (including farnesyl pyrophosphate synthetase gene ispA and longifolene synthase gene lgfS); and the recombinant Escherichia coli is subjected to base platemodification of optimized endogenous MEP synthesis pathway and the optimization of the metabolic pathway by introducing key enzyme genes in the heterologous MVA pathway, so that the obtained geneticengineering bacteria producing longifolene has a higher yield of longifolene. The genetic engineering bacteria is connected to a fermentation medium, an inducer IPTG is added, long-chain n-alkanes areadded during the fermentation and culture process for two-phase extraction fermentation, the yield of a longifolene shake flask reaches 1.77mg / L, and the industrial application prospects are good.

The invention provides a method for ynthesis of (S)-rivastigmine through reductive amination, belonging to the technical field of synthesis of chiral medicines in the pharmaceutical and chemical industry. The synthetic method of the invention comprises the following steps: with 3-hydroxyacetophenone as a raw material, carrying out a simple condensation reaction so as to realize high-yield preparation of 3-nitromethylethylformate acetophenone; then with 3-nitromethylethylformate acetophenone as a substrate, carrying out an asymmetric reductive amination reaction with benzhydrylamine under the catalysis of an Ir complex so as to obtain a chiral amine precursor with high enantioselectivity and high yield; and then carrying out deprotection and a methylation reaction so as to obtain (S)-rivastigmine with high enantioselectivity and high yield. The synthetic route of the method is short; the total yield of four steps can reach 80%; the enantioselective excess of (S)-rivastigmine can reach 98%; so the method has good industrial application prospects and practical application value.

The invention belongs to the field of biomass energy and chemical industry, and relates to a composite catalytic material, a preparation method and application thereof in the controllable preparationof dihydroxy / dimethylfuran compounds. The catalytic material comprises a carrier and an active metal supported on the carrier. The active metal is one of Cu, Ni, Co, Zn, Fe, Al or Sn; and the carrierof the catalyst is an organic phosphonic acid coordination compound of Zr or Hf. The catalyst consists of cheap and easily available non-noble metal and amorphous mesoporous metal phosphonic acid polymer carrier. Meanwhile, the catalyst also has strong carbonyl reduction ability and hydroxyl hydrogenolysis ability. By using renewable organic dihydric alcohol as a high efficiency in situ hydrogen donor and a reaction medium, the use of an external hydrogen donor and other reaction solvents is avoided. By a segmental temperature control method, carbonyl reduction ability and hydroxyl hydrogenolysis ability of the catalyst can be selectively controlled. The controllable preparation of 2,5-dihydroxy methylfuran and 2,5-dimethylfuran is realized according to actual needs.

The invention provides an aminothiazole compound dehydration and alkylation method. According to the method, any transition metal or non-transition metal catalyst is not required, and the aminothiazole compound can be directly reacted in the presence of a little alkali under the inert gas protection or air. The reaction conditions are mild, the reaction is easy to operate, the product is simply separated and purified, and the product recovery rate is high. The low-price readily available alcohol serves as an alkylating agent, and the synthesis cost is greatly reduced. In addition, the reaction is carried under solvent-free conditions, and the possible pollution of the organic solvent on the environment can be reduced to a certain degree; and moreover, the reaction requirements on the reaction conditions are low, the reaction can be performed under air conditions, and the method has good research and industrial application prospect.