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

The invention relates to a selective oxidation-reduction method for recycling arsenic and antimony from arsenic-antimony smoke, belonging to the field of nonferrous metallurgy technologies. The method comprises steps of firstly, selectively oxidizing and recycling arsenic: introducing oxidizing gas into arsenic-antimony smoke, reacting for 20-90 minutes at 400-800 DEG C, collecting the As2O3 volatile smoke in reaction; after reaction is completed, obtaining a secondary material containing antimony; then reducing and recycling antimony: adding a reducing agent into the secondary material containing antimony (obtained in the former step), reacting for 30-180 minutes at 800-1000 DEG C, thus obtaining crude antimony. Based on the characteristics that arsenic trioxide is easy to volatilize and antimony tetroxide is difficult to volatilize at a low temperature, the selective oxidation-reduction method has the beneficial effects that selective oxidization is carried out on the arsenic-antimony smoke, arsenic is volatilized, separated and removed, and finally reduction smelting is carried out so as to obtain the crude antimony; therefore, the method is simple and has good industrial application prospect.

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 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 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 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 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 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 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.