62results about How to "Facilitate synthesis reaction" patented technology

The present invention provides a synthesizing method of doping lithium manganese oxide, which is essentially used for lithium ion battery anode active material. A doping material is mixed into Li₂CO₃ and electrolysis MnO ₂ material. The doping material comprises any two of Al, Co, Cr, Fe, Y trivalent cations and any one of F, Cl, I anions. The raw material is mechanically mixed, high-speed milled and sieved to prepare a mixture. The mixture is roasted according to a set program in a rotary resistance furnace. After cooling, the mixture is milled and sieved again to prepare the product. The method is simple in reaction process, low in cost and even in mixture, which effectively improves the electrochemical property and recycling property of material and causes no pollution to the environment.

The invention discloses a synthesis of an addition reaction which uses accelerant to catalyze alkali and hydrogen sulfide in order to synthesize relevant thioamide compounds by high yield. The concrete things are thioacetamide, propanethioamide, thioisonicotinamide, thiobenzamide, 2-cyanothioacetamide, 4-chlorphenylthioacetamide, 4-methylthiobenzamide. The process of this invention is: dissolving nitrile in a suitable organic solvent, adding alkali solution and phase transfer catalyst, mixing adequately to homogeneous phase, then importing hydrogen sulfide until the reaction end and getting thioamide.

The invention relates to a synthesizing method of a nano-grade lithium ion battery composite positive electrode material LiMnPO4/C. According to the invention, a lithium source, a phosphorous source, a manganese source and an organic carbon source are well mixed in a solvent medium; the mixture is processed for 2-7h in a high-energy ball mill, and a uniformly dispersed precursor slurry is obtained with the activation effect of mechanical forces; the precursor slurry is subjected to ultrasonic dispersion in a high-boiling-point polyol solvent, and is subjected to a reflux reaction; an obtained product is filtered and washed; and the product is subjected to a heat treatment for 1-10h under inert atmosphere protection and under a temperature of 600-800 DEG C, such that the nano-grade lithium manganese phosphate/carbon (LiMnPO4/C) positive electrode material is obtained. According to the material provided by the invention, primary particles are well distributed nano-particles, and a conductive carbon layer is formed in-situ on the surfaces of the LiMnPO4/C particles. The method provided by the invention is simple and highly efficient. With the method, no pollutant such as ammonia gas or wastewater is produced during the entire process. Therefore, a development requirement of green chemistry is satisfied.

The invention relates to a technique for purifying acetylene gas with sulfuric acid and application thereof. An alkali cleaning cooling tower and a sulfuric acid purification tower are connected sequentially; the alkali cleaning cooling tower is moved before the sulfuric acid purification tower; and the sulfuric acid purification tower is formed by connecting two towers in series, wherein the primary tower is a packing tower, and the secondary tower is a packing/bubbling hood combined tower. The technique for purifying acetylene gas with sulfuric acid is suitable for technical processes for purifying and drying acetylene, and especially synthesis techniques of vinyl chloride. In the acetylene gas purification process, the acetylene gas is dried, and the drying effect is better than that of mixed freeze drying, thereby reducing the occurrence of side reaction and being beneficial to the proceeding of the synthetic reaction; and meanwhile, the invention can reduce the equipment investment and the consumption of freezing water or freezing salt water, thereby lowering the operating cost.

The invention discloses a device and process for synthesizing methanol based on hydrogenation of carbon dioxide. The device comprises a mixer, a reactor, a cooler, a flash tank and a tail gas diverging device, wherein the reactor is filled with a catalyst; gas raw materials including CO2 and H2 are introduced into the mixer; an outlet of the mixer is connected with an inlet of the reactor througha pipeline; an outlet of the reactor is connected with the flash tank through the cooler and a pipeline; aquatic methanol products are discharged from a liquid outlet in the bottom of the flash tank,and a gas outlet in the top of the flash tank is connected with an inlet of the tail gas diverging device through a pipeline; and an outlet of the tail gas diverging device is divided into two paths,one path is discharged to a tail gas treatment system, and the other path is connected with an inlet of the mixer through a pipeline, so a part of tail gas is separated out and enters a next cycle ascycle gas. According to the process, the effective utilization rate of CO2 can be greatly increased, and tail gas emission is reduced; and compared with other similar device processes, raw material input cost and tail gas treatment cost are saved, and high economic benefits are achieved.

The invention relates to a technique for synthesizing a boron-containing thermoplastic phenol formaldehyde resin by a solvothermal process, which comprises the following steps: adding a thermoplastic phenol formaldehyde resin, a boron-containing compound, oxalic acid and a solvent into a solvothermal reaction kettle, sealing, heating to 120-160 DEG C, keeping the temperature for 0.5-6 hours, cooling to room temperature, and removing the solvent contained in the product, thereby obtaining the boron-containing thermoplastic phenol formaldehyde resin, wherein the boron-containing compound uses an aromatic ring structure as the parent nucleus and hydroxymethyl and boron-containing structure as the substituent group of the aromatic ring structure, and the solvent is water or an alcohol solvent or a mixture of an alcohol solvent and water in a mass ratio of 1:(0.05-0.7). The method has the advantages of high raw material conversion rate and simple technical process; and the obtained product has the advantages of uniform molecular weight distribution and favorable heat resistance. Since the conversion rate of various raw materials is higher, the residual micromolecules do not need to be removed by water washing, thereby effectively reducing the sewage discharge.

The invention relates to a preparation method of a ternary layered carbide Ti2SC (titanium sulfur carbide) material. Al (aluminum) is used as an assistant, and a high-temperature high-pressure synthesis method is used for preparing a compact Ti2SC material. Raw materials include Ti (titanium) powder, S (sulfur) powder, C (carbon) powder and Al powder, and the mol ratio of the four raw materials is as follows: Ti: S: C: Al=2: (1-1.4): 1: (0.1-0.2). The Ti2SC block material synthesized by the method is compact in structure, and the content of Ti2SC is more than 80 percent by weight; Al is used as the assistant, so that the melting point can be lowered; and by adopting the high-temperature high-pressure sintering method, the volatilization of the S powder can be maximally inhibited, and the Ti2SC material can be rapidly sintered and synthesized.

The invention relates to a method for preparing a steroidal drug intermediate. The method comprises the steps that microbial conversion is conducted on a first compound with Nocardioides simplex to obtain the steroid drug intermediate, the first compound is shown as a formula I, the steroidal drug intermediate is as shown in a formula II, and in the formula I and the formula II, R is H, a halogenatom, an alkyl group, an alkoxy group, a hydroxyl group or a phenyl group. The method selects 4, 9 (11)-pregnant-17-hydroxy group-3,20 dioxin-21-acetate as a substrate, uses only the Nocardioides simplex for biotransformation, dehydrogenation at position 1,2 and hydrolysis of acetate at position 21 are simultaneously conducted on the substrate, 1,4,9 (11)-pregnene-17,21-diol-3,20-dione is obtained, products formed through transformation are mainly the 1,4,9(11)-pregnene-17,21-diol-3,20-dione, the proportion of by-products is low, the purified products are white or off-white crystals, relativesubstrate weight yield is 75%-85%, a target product yield is high, after a HPLC analysis, the purity is >=99%, and external standard content is 98%.

The invention provides a method for synthesizing a fluorine-containing pyrimidinone compound, and belongs to the field of organic synthesis. The method does not use a metal reagent and an organic solvent, is environmentally friendly, and is suitable for industrial production. The method comprises the following steps: separately adding the pyrimidinone compound and sodium trifluoromethylsulfinate into a reaction flask for reacting under the action of tert-butyl peroxybenzoate (TBPB) and water at temperature of 25 DEG C to 80 DEG C for 2 to 4 hours; and after completion of the reaction, performing column chromatography to obtain the fluorine-containing pyrimidinone compound. The method can be applied to the synthesis of a trifluoroalkyl-substituted pyrimidinone compound.

The invention discloses a protein-based surfactant for carrying out cleaning care on skin and hairs and a preparation method thereof. The preparation method comprises the following steps: (1) pretreating a natural protein raw material; (2) adding alkaline protease and catalase into the pretreated natural protein raw material, and carrying out enzymolysis and enzyme deactivation, thus obtaining anenzyme deactivation protein hydrolysate; (3) purifying and refining the enzyme deactivation protein hydrolysate, removing moisture, and drying, thus obtaining collagen; (4) carrying out amidation reaction on the collagen and diethanolamine by taking a microreactor as a reaction device, and generating collagen polypeptide amide; carrying out esterification reaction on the collagen polypeptide amideand lauric acid, thus preparing the protein-based surfactant. According to the protein-based surfactant and the preparation method, disclosed by the invention, the functional protein-based surfactantwhich is suitable for cleaning the skin and the hairs and for other special demands can be produced by using natural protein which can be easily abandoned or lowly utilized as a raw material, so thatthe utilization efficiency of a natural protein resource is increased.

The invention discloses a preparation method of nano antimony thioantimonate, wherein the preparation method comprises the steps: adding a sodium thioantimonate solution into a complex solution of trivalent antimony, dispersing with ultrasonic waves, controlling the temperature of the reaction system at 20-35 DEG C, adjusting the pH value of the reaction system to 6.3-7.8 with hydrochloric acid, after completion of addition of the sodium thioantimonate solution, continuing to disperse for 10-15 min by ultrasonic waves, filtering to take a filter residue, washing the filter residue with a potassium sodium tartrate solution and purified water, and grinding for 3-5 h by a ball mill, and thus obtaining the product. The content of sulfur in antimony thioantimonate obtained by the preparation method provided by the invention is low, the product is stable and pure, the yield is high, the properties are good, the particles are in nanoscale, and the nano antimony thioantimonate has the advantages of good compatibility with lubricating grease, good extreme pressure wear resistance and good lubrication performance; as an additive, the nano antimony thioantimonate has various properties far beyond the requirements of the national standards on extreme pressure lubricating grease, can be industrially produced and has a good application prospect.

The related front axis-radial converter comprises an outside drum and an inside drum, wherein the inside drum comprises: a collection box, a cover plate, a pad, an body, a cold-tube liner, a central tube, a #-shaped frame, a support ring, a radial outside drum I/II, a radial inside drum I/II, a quench tube, a distributor, a taper figure pattern board, a low head-seal bearing, a catalyst-out tube, and a bulkhead. This invention has ideal temperature distribution, large production capacity, and applies conveniently.

The invention relates to a preparation method of tetraene intermediates. According to the preparation method, a first compound is converted by Nocardioides simplex to obtain tetraene intermediates; wherein the first compound is represented by a formula I, tetraene intermediates are represented by a formula II, and R in the formula I and the formula II represents H, a halogen atom, an alkyl group,an alkoxyl group, a hydroxyl group, or a phenyl group. According to the preparation method, the first compound is taken as the substrate, only Nocardioides simplex is used to carry out biological conversion; the substrate is subjected to 1,2-dehydrogenation and 21-acetate hydrolysis at the same time; most of the conversion products is target products, the byproduct ratio is low; after purification, the product is white or white-like crystals; relative to the weight of the substrate, the yield is 80-90%; the target product yield is high; through HPLC analysis, the purify of the product is not less than 95%; and the total content of target products and secondary products is not less than 99%.

The invention provides a preparation method of AlON powder, the AlON powder and application of the AlON powder, and the method comprises the following steps: weighing nano aluminum oxide powder and carbon powder according to a mass ratio, adding 0-10wt% of a dispersant, and mixing by taking absolute ethyl alcohol as a medium and adopting a ball milling method to obtain mixed powder; sintering the mixed powder by using a carbon thermal reduction nitridation method; carrying out planetary ball milling treatment on the sintered powder, adding 0-10wt% of a dispersing agent by taking absolute ethyl alcohol as a medium after the treatment is finished, and carrying out dispersion treatment by adopting ultrasonic waves, so as to obtain the AlON powder, the dispersing agent is added step by step, the overall dispersing performance of the powder is improved, the AlON powder with high dispersity, high phase purity, small particle size and high sintering activity is prepared, the AlON powder is applied to preparation of the AlON transparent ceramic, and the AlON transparent ceramic with good performance can be obtained.

The invention discloses a method for synthesizing 2-hylogen-3-alkyl substituted sulfonyl pyridine and midbody thereof in an ultrasonic method. The method comprises the following steps: enabling substituted amino acraldehyde, a catalyst and substituted cyanoethyl sulfone to react under ultrasonic until the complete reaction to prepare a reaction solution of a 2-hylogen-3-alkyl substituted sulfonyl pyridine midbody; adding halogen hydride into the reaction solution at a certain of temperature, facilitating the continuous reaction until the complete reaction, adding an alkaline solution into the reaction solution, adjusting a pH value to 7 to 8, standing, layering into a water layer and an organic layer, extracting the water layer by using an organic solvent, combining the organic layer, refining to obtain the 2-hylogen-3-alkyl substituted sulfonyl pyridine. The 2-hylogen-3-alkyl substituted sulfonyl pyridine is synthesized by adopting the ultrasonic method, so that the organic synthetic reaction can be effectively facilitated, the reaction speed is increased, the reaction yield is increased, and the environmental protection is facilitated; and the reaction time is short, the operation is simple, the reaction can be completed generally in two hours, the product yield is high, the quality is good, and the yield can reach 90 percent or more which is higher than the yield of the traditional solvent-method heating refluxing method.

The invention provides a method for producing a high-quality epoxy compound. The method comprises the following steps: carrying out a ring opening reaction on hydrogen sulfide and chloropropylene oxide in a fixed bed reaction device in the presence of a catalyst solid alkali, and carrying out oxidation and a ring closing reaction to produce the high-quality epoxy compound. The fixed bed reaction device adopted in the invention improves the product purity to 98%, reduces the content of impurities, controls the content of monothio impurities to be 1% or less, and improves the refractive index of the product. The chroma of the product is reduced to 10-20. The method has the advantages of mild reaction conditions, easiness in filtration and recovery of the solid alkali catalyst, realization of repeated use of the catalyst after being activated, continuous production of the reaction device, and facilitation of industrial production application.

The invention discloses application of Al(C6F5)3 as a catalyst for silylation of aromatic amines, thus providing a novel reaction catalyst for synthesizing silylated aromatic amines. The aluminum element is abundant and the price is low so that the Al(C6F5)3 as a catalyst can effectively reduce the synthesis cost of the silylated aromatic amines. In addition, the aluminum element is low in toxicity so that a synthetic process is more environmentally friendly, the synthesized silylated aromatic amines are suitable for application in the fields of optoelectronics and medicine, and product performance and safety are improved. The Al(C6F5)3 has high catalytic activity, and the yield of the prepared silylated aromatic amine is high. In addition, a hydrogen acceptor is not needed when the Al(C6F5)3 is adopted as the catalyst, and the silylation reaction occurs only at the para-position C-H bond of the aromatic amine, thus simplifying after-treatment and making reaction selectivity high.