92 results about "Sulfur Ethers" patented technology

The invention discloses a hydroxyl oxidize iron modified titanium dioxide composite photocatalyst as well as a preparation method and application thereof. According to the preparation method, FeOOH isprepared by adopting a hydrothermal method, TiO2 sol is prepared by adopting a sol-gel method, an then the FeOOH and TiO2 are uniformly mixed and then are sprayed onto a glass fiber sheet so as to prepare the photocatalyst. The composite photocatalyst has the advantages that the TiO2 is modified by the FeOOH, so that the light absorption wavelength range of the catalyst is expanded, in addition,the photo-induced electron-hole recombination rate in the catalyst is decreased, and therefore the degradation effect of the photocatalyst on organic pollutants, especially malodorous sulfur-containedcompounds is effectively improved. Meanwhile, the preparation method for the catalyst has the advantages of being simple, feasible, mild in reaction condition and wide in application prospect in theaspects of photocatalytic degradation of the organic pollutants and indoor and outdoor harmful gas, especially H2S, SO2, mercaptan, sulfur ether and other malodorous sulfur-contained compounds, environmental protection and the like.

The invention discloses a deep desulfurization method for preparing a synthetic raw material gas by taking a coal-based natural gas, a petroleum refining gas, a coke oven gas, a steel mill converter gas and the like as raw materials. The method comprises the step of enabling the raw material gas which is treated by rough desulfurization and contains hundreds of parts per million (ppm) of H2S and hundreds of ppm of organic sulfur (including COS, CS2, sulfur alcohol, sulfur ether, thiophene and the like) to pass through a plurality of stages of titanium-based molybdenum-cobalt catalysts, a plurality of stages of zinc oxide desulfurizing agents and a stage of multifunctional fine desulfurizing agent to enable the total sulfur to be less than or equal to 0.01ppm. Compared with the existing desulfurization accuracy (0.1ppm), the desulfurization accuracy of the deep desulfurization method enables the degree of purification to be increased by one order of magnitude and enables the service life of a methyl alcohol catalyst to be doubled. The invention also discloses a medium-temperature fine desulfurization device used by the synthetic raw material gas deep fine desulfurization method. For the industrial community, after the method and the device are used, the starting and stopping times of the device can be reduced, the raw material and the power consumption are reduced, the yield of the device is increased, and an effective measure capable of saving energy, reducing emission and increasing yield can be provided.

The invention provides a double amide derivative containing a sulfur ether and N-sulfur cyano (sulphone) imine structure and replacing pyrazolecarboxamide and a preparing method and purpose thereof, and relates to double amide derivatives containing the pyrazolecarboxamide. The double amide derivative containing the pyrazolecarboxamide has a chemical structure general formula as shown in the map I. The structure general formula and the synthetic method of the double amide derivative and the purpose for being used as insecticides, antiseptics, a plant virus resistance agent and a plant activator are disclosed. The double amide derivative containing the sulfur ether and N-sulfur cayano (sulphone) imine structure and replacing the pyrazolecarboxamide can be mixed with auxiliaries or synergists which are acceptable in agriculture to form a processing technology to be used for preparing the insecticides, the antiseptics, the plant virus resistance agent and the plant activator. The invention further discloses the purpose and preparing method of the double amide derivative containing the sulfur ether and N-sulfur cyano (sulphone) imine structure and replacing the pyrazolecarboxamide combining with commodity insecticides, commodity antiseptics, commodity plant virus resistance agents and commodity plant activators to be used for preventing and curing plant diseases, insect pests, virus diseases in agriculture, forestry and horticulture.

The invention discloses a special low-VOC scraping-resisting polypropylene composite material for an automotive trim and a preparation method of the composite material. The special low-VOC scraping-resisting polypropylene composite material comprises the following ingredients: 65-80 percent of a copolymer PP, 10-15 percent of a flexibilizer, 5-20 percent of talcum powder, 1-5 percent of superfine active nanometer calcium, 0.5-1 percent of an odor absorbent, 0.5-1 percent of a weather-resisting and ageing-resisting additive, 0.1-0.5 percent of a lubricating agent and 1-3 percent of a scraping resisting agent. The preparation method comprises the following steps: adding an ethylene-octylene copolymer, composite filler, the odor absorbent, the scraping resisting agent and the weather-resisting and ageing-resisting additive into a low-VOC polyolefin base material, mixing, and realizing a low shrinkage rate by a spatial effect of a superfine nanometer material in a composite system and interaction of the flexibilizer and the base material; extruding by use of a double-screw extruder under a melting condition by utilizing the peculiar smell absorption capacity of the odor absorbent on small molecules such as aldehydes, amine and sulfur ether, and then performing water-drawing granulation to obtain a finished product. The special low-VOC scraping-resisting polypropylene composite material disclosed by the invention has the advantage of realizing low VOC, low shrinkage and scraping resistance.

The invention relates to a production process for preparing a sulfoxide compound through selective oxidation of sulfur ether. According to the particular production process, the sulfoxide compound isprepared from sulfur ether through high-selectivity oxidation reaction in a mild reaction system by taking hydrogen peroxide as an oxidizing agent under a synergic catalytic effect of nano-silica supported ionic liquid and a metal-organic framework material (MOFs). A catalyst disclosed by the invention is easy to prepare, can be well recycled and repeatedly used and is high in chemical selectivity, and a preparation method is mild in reaction conditions, simple in operation and high in oxidation rate and is an efficient, clean and environment-friendly method.

The invention provides a preparation method of layered MoS2-Bi2MoO6 nanocomposite.Molybdenum disulfide powder is added into a layering solution to be subjected to a layering reaction, and a mixed solution is formed; an oxidizing agent is added into the mixed solution so that an oxidizing intercalating reaction can be performed, and intercalated molybdenum disulfide powder is obtained after filtering and drying; the molybdenum disulfide powder is dispersed in distilled water, Bi2MoO6 powder is added, stirring and mixing are performed, and MoS2-Bi2MoO6 mixed powder is obtained after filtering and drying; the MoS2-Bi2MoO6 mixed powder is mixed with an exploding agent, an exploding reaction is performed, and an exploding reaction product is taken out after temperature is lowered to room temperature; the layered MoS2-Bi2MoO6 nanocomposite is obtained.By means of the sulphophile characteristic of aromatic sulfur ether, the interlayer Van der waals force of the molybdenum disulfide raw material powder is reduced, and intercalation stripping is performed on the molybdenum disulfide raw material powder by means of exploding impact.The method is adopted for preparing the layered MoS2-Bi2MoO6 nanocomposite, operation is easy, no complicated equipment is needed, the preparation efficiency is high, and the yield is high.

The invention provides an industrial production method of esomeprazole. According to the industrial production method, under the action of a phase transfer catalyst and strong alkali, omeprazole sulfur ether is prepared through condensation; through low-temperature asymmetric oxidation, the generation of nitric oxide and sulfone is reduced, an organic solution of esomeprazole (as shown in the formula III) is prepared, the organic solution can be directly fed into a sodium alcoholate solution, three steps namely asymmetric oxidation aftertreatment, salting and crystallization and refining are completed once, a finished esomeprazole product is prepared in multiple batches, the purity of the finished esomeprazole product is greater than 99.8%, the isomer of the finished esomeprazole product is less than 0.05%, the individual impurity of the finished esomeprazole product is less than 0.1%, and the medicine grade raw material medicine requirements are met. By adopting the preparation method, the step of extracting and purifying esomeprazole and esomeprazole sodium is canceled, the production period is shortened, the production cost is greatly reduced, the possibility that the sulfone impurity is increased in the production process is avoided, the preparation method is safe and reliable, simple and easy to operate, stable in salting and good in repeatability, and the product quality is greatly improved.

The invention provides an absorbing fine desulfurization agent, a preparation method and an application thereof. The absorbing fine desulfurization agent comprises an activated carbon and an active substance loaded on the activated carbon; the active substance is a mixture of alkaline substance and metallic oxide or salts thereof; the metallic oxide is composed of one or more of oxides of K, Mg, Cu, Ni, Zn and Ag; the alkaline substance is composed of sodium oxide and/or potassium oxide; the metallic oxide is 0.1-20wt% of the activated carbon; the alkaline substance is 0.2-30wt% of the activated carbon. The absorbing fine desulfurization agent provided by the invention is used for removing sulfides, such as sulfur alcohol, sulfur ether and thiophene; the absorbing fine desulfurization agent is especially suitable for finely removing sulfur alcohol, sulfur ether, thiophene, and the like, from splitting olefin components; removal precision is less than 5ppm; content and nature of activeolefin substances in the splitting olefin components after desulfuration are almost unchanged; and meanwhile, the absorbing fine desulfurization agent has the characteristics of high sulfur capacity and easiness in regeneration.

The invention discloses a process for preparing hydrogen sulfide through the reaction between sulfuric-acid-containing exhausted liquid (by product of the production process for preparing chemical product and intermediate product by means of chemical reactions) and barium sulphide water soluble liquid phase (prepared from barium sulphide calcined member through water leaching), the produced hydrogen sulfide can be further used in preparing other chemical products, such as sodium hydroxide, sodium hydrogen sulfide, ammonium sulfide, ammonium hydrosulfide, sulfourea, methyl hydrosulfide, ethyl mercaptan and dimethyl sulfur ether.

The invention provides a method for distinguishing and detecting sulfoether compounds and thiophene compounds in petroleum. According to the method, a plasma ionization device serves as ionization sources of mass spectrum detection, so that mass spectrum detection analysis is performed. An ionization process in the step particularly includes the step: performing excitation and ionization on petroleum samples in the oxygen mixture atmosphere by the aid of plasmas. According to the method, online oxidization ionization of sulfur ether and non-oxidation ionization of thiophene of the petroleum samples are achieved in the molecular ionization process by the aid of a special ionization environment (plasmas and oxidation atmosphere), so that the sulfoether compounds and the thiophene compounds in the petroleum are directly detected and distinguished at a molecular level.

The invention discloses 4-(2-(2-methyl sulfoxide)ethyl)-4-nitrobenzene)morpholine shown in the formula (I) and preparation and application thereof. A preparation method includes the steps that 2-(2-chlorine-5 nitro)phenethyl alcohol shown in the formula (II) and morpholine are mixed to prepare 2-(2-morpholine-5-nitrobenzene)ethanol shown in the formula (III); bis(trichloromethyl)carbonate ester, a sodium methyl mercaptide aqueous solution and an aqueous hydrogen peroxide solution are sequentially added dropwise to 2-(2-morpholine-5-nitrobenzene)ethanol shown in the formula (III), and finally 4-(2-methyl sulfoxide)ethyl)-4-nitrobenzene)morpholine is prepared. According to the application of 4-(2-methyl sulfoxide)ethyl)-4-nitrobenzene)morpholine, the obtained Swern reagent reacts with an alcohol compound shown in the formula (IV), and aldehyde or ketone is prepared after after-treatment. The defects of an existing Swern oxidation method are overcome, generation of a stink byproduct dimethyl sulfide and toxic carbon monoxide is avoided from the source, the reaction temperature is increased to be -30 DEG C to 0 DEG C, and an odorless byproduct novel sulfur ether can be recycled and reused. The formulas are shown in the description.

The invention discloses a method for synthesizing o-amino diaryl ether and o-amino diaryl sulfur ether. The method comprises the steps of: adding an iron and/ or copper catalyst in solvent alcohol or water under the action of alkali, and carrying out open loop coupling reaction on catalytic aryl halide and benzoazole compound to prepare the o-amino diaryl ether or o-amino diaryl sulfur ether, wherein the reaction general formula is shown in the specification. The method for preparing the o-amino diaryl ether and o-amino diaryl sulfur ether by the coupling reaction is low in catalyst price, low in toxicity, direct to react, high in atom economy, wide and stable in substrate source and wide in application scope. Under the optimized reaction conditions, the separation yield of target products reaches up to 96%.

The invention discloses a polymetallic oxygen cluster immobilized chiral catalyst, a preparation method thereof and application thereof to chiral resolution and catalytic oxidation, belonging to the technical field of polymetallic oxygen cluster chiral catalysts. The preparation method mainly comprises the following three steps: synthesizing of hyamine type organic cations, the hydrophobic tail ends of which contain hydroxyl and chiral hydrophilic head groups; preparing a polymetallic oxygen cluster supramolecular complex with hydroxyl on t he periphery by carrying out electrostatic coating on a polymetallic oxygen cluster with the organic cations; preparing the chiral catalyst with the polymetallic oxygen cluster immobilized on silicon dioxide by carrying out hydrolyzation, polycondensation and hydroxyl exchange reaction on the supramolecular complex and a siloxane reagent. The polymetallic oxygen cluster supramolecular complex immobilization chiral catalyst can be used for the chiral resolution of racemic secondary alcohol substrates and the chiral catalytic reaction of sulfur ethers and olefin substrates. The method disclosed by the invention is commonly applicable to the polymetallic oxygen cluster with catalytic activity, simple in preparing and low in cost and the catalyst has important application value in the fields of chemical industry, medicines, materials and the like and can be recycled.

The invention discloses a polyacid@aluminum oxide composite catalytic material and a preparing and activated gamma-aluminum oxide balls are compounded under the acidic condition, the surface of aluminum oxide is modified with polyoxometallate molecules in a covalent bond mode, and highly-stable immobilization and uniform loading of polyoxometallate on aluminum oxide are achieved under the premise of maintaining the nuclear cluster integrity of polyoxometallate.Selected polyoxometallate Na12[alpha-P2W15O56] and Na8H[A-PW9O34] have a high oxidation state and thus have excellent oxidation performance, and when the composite catalytic material of polyoxometallate is applied to a catalytic sulfur ether oxidation reaction, good catalytic activity and circulation stability are achieved.Compared with reported polyacid and aluminum oxide nano-composite catalytic materials and pure polyacid, the synthesized composite catalytic material remarkably improves the circulation stability of the sulfur ether oxidation reaction, shortens the reaction time, reduces the dosage of hydrogen peroxide and maintains a good conversion rate and selectivity when serving as a catalyst of the sulfur ether oxidation reaction.

The invention discloses an antibody conjugate. A structural formula thereof is Ab-Lm-Yn, wherein Ab is an antihuman CD30 antibody cAC10, an active fragment or a variant thereof; Ab is only connected with L; Y is cytotoxic agent maytenin alkaloid DM1; n is 2-5 and m is more than or equal to n; an amido bond is formed by a left end of L and an amino group of lysine residue of Ab; a sulfur ether bondis formed by a right end of L and S in DM1 sulfydryl. The invention also discloses a preparation method of the antibody conjugate, the antibody conjugate prepared according to the preparation methodand an application of the antibody conjugate in preparing drugs for treating CD30 positive tumors. Main metabolites of the antibody conjugate disclosed by the invention can effectively accumulate in CD30 positive tumor cells. The antibody conjugate has excellent targeting property, tumor-killing effect and safety performance.

The invention discloses a 1,3,4-oxadiazole sulfur/oxygen ether compound with amide bonds, a preparation method of the compound and an application. The structure of the compound is as shown in a general formula (I). The compound is based on sulfur ether compounds with 1,3,4-oxadiazole groups, the amide bonds possibly improving biological activities of target compounds are introduced into a system to synthesize a series of 1,3,4-oxadiazole sulfur/oxygen ether compounds with the amide bonds, the compound has good inhibiting effects on pathogenic bacteria and plant viruses, the pathogenic bacteria include rice bacterial leaf blight, candidatus liberibacter asiaticus and the like, the plant viruses include tobacco mosaic virus and the like, and the bisamide compound provides important scientific foundations for research, development and creation of novel pesticides.

The invention relates to a preparation method of activated carbon capable of selectively adsorbing palladium (II) and belongs to the technical field of non-ferrous metallurgy. Since the activated carbon has relatively strong adsorptive property, the activated carbon is widely applied in various fields of industry and life, however, and due to poor selectivity, the application of the activated carbon in recovery of a metal is limited. Therefore, the invention provides a treatment method of the activated carbon so that the activated carbon can selectively adsorb palladium (II) in a hydrochloric acid medium. The treatment method comprises the following steps: chlorinating the activated carbon as a precursor with Cl2 at a high temperature so that carbon-chlorine bonds are introduced into the surface of the activated carbon and then treating the activated carbon with Na2S so that sulfur ether functional groups are introduced into the surface of the activated carbon. Sulfur ether is an effective extractant of palladium (II) and thus the treated activated carbon has selective adsorption to palladium (II).

The invention discloses a method for efficiently preparing an ex-situ presulfuration agent through a medium-pressure solvothermal method, and belongs to the technical field of organic multi-sulfur-ether mixed vulcanizing agent synthesis of ring-free unsaturated carbon skeletons. The synthesis method includes the following steps of adding elemental sulfur and solvent into a reaction kettle, raising the temperature to be 145-160 DEG C, continuing to conduct stirring for 0.5 h, slowly adding isobutene into the reaction kettle, controlling the pressure at 3.0-3.5 MPa, conducting reacting for 3-6 h at a constant temperature, cooling to 35 DEG C after the reaction ends, and pressing the reaction mixture out of the reaction kettle through overbottom pressure. After standing and liquid distribution are conducted on the product, a certain amount of 120# gasoline or methylbenzene is added, filtering, washing, backflow and distillation are conducted on the organic phase, the ex-situ presulfuration agent is obtained, and fresh solvent can be compensated for till reaching the existing concentration to be recycled after the inorganic phase is analyzed. Ammonia water solutions of different concentrations serve as solvent. The method has the advantages of being low in cost, high in product yield, free of pollution, low in device requirement, and the like, solves the problems in the prior art, and breaks through technology monopoly for the ex-situ presulfuration agent at home and abroad.

The invention provides a high-voltage lithium ion electrolyte and application thereof, and the electrolyte comprises the following components in percentage by weight: 5-20wt% of electrolyte lithium salt, 70-80wt% of solvent, 0.1-10wt% of thioether additive, 0.1-5wt% of silicon additive and 0.1-5wt% of other film-forming additive, the sulfur ether additive comprises any one or a mixture of several of the following components, the silicon additive comprises any one or a mixture of several of the following components, and the high-temperature and high-pressure cycle performance and the battery capacity of the lithium ion battery are remarkably improved through the technical scheme of the invention.