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 relates to a chemical absorbent, in particular to a chemical absorbent for deodorization. In order to overcome the technical problem, the invention proposes the technical scheme that the chemical absorbent consists of the following components in parts by weight: 10-20% of strong base, 5-7% of oxidant,0.2-0.5% of active agent, 0.05-2% of corrosion inhibitor, 0.05-2% of pour point depressant, 0.05-8% of desulfurizer, 0.05-4% of catalyst and 60-80% of water. The chemical absorbent has the advantages of overcoming the low removal rate of pure alkaline liquor to hydrogen sulfide in the prior art, improving the absorptivity of sulfur compounds in waste gas and removing organic sulfur, such as sulfur alcohol, sulfur ether, dimethyl disulfide, and the like. The waste residue of sodium sulfide which is generated after treatment is relatively stable and is easy to decompose, thereby avoiding secondary pollution. The chemical absorbent has longer use time than the traditional absorbent and high reaction speed in removing the sulfur compounds.

The invention relates to a method for producing amorphophallus konjac hybrid seedling seeds with pollinating insects. The method has a basis of the following 4 key technologies: (1) systematic investigation is carried out upon flower-visiting insects; (2) pollinating insects are further screened from the flower-visiting insects; (3) insects which can be applied in field pollinating seed production are selected from the pollinating insects; and pollinating capacity and effects of the insects are verified; and (4) one or more types of pollinating insects are used in collaborative pollination, or flower-visiting frequency is improved with a hyperchromic effect or by artificially adding a carrion-type low sulfur ether material, such that group seed setting rate and single-plant setting rate are improved. According to the invention, carrion-type insects such as flesh fly, earwig, beetle and rove beetle are used for pollinating, such that production efficiency can be improved, and labor cost can be reduced. The hybrid large-scale seed production cost is substantially lower than artificial pollination cost, such that insect pollination has certain industrial prospect. The insect pollination method also has great practical significance for biodiversity protection and resource conservation.

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 discloses a method for preparing a liquid butadiene rubber stabilizer, and belongs to the technical field of preparation of an anti-aging agent, and relates to a liquid phenolic antioxidant and a sulfur ethers antioxidant. The method comprises the steps of: preparing a liquid phenolic antioxidant and a sulfur ether antioxidant; compounding the liquid phenolic antioxidant and the sulfur ether antioxidant with a polymerization reaction terminator; adding to a blending kettle; agitating, heating and mixing to form a liquid mixture, and cooling to room temperature, so as to obtain the liquid butadiene rubber anti-aging agent. In the process of preparing the liquid anti-aging agent, the mass ratio of the sulfur ether antioxidant to the phenolic antioxidant is 1:(0.40-0.63); the mass ratio of the sulfur ether antioxidant to a phosphite antioxidant is 1:(0.25-0.40); the mass ratio of the sulfur ether antioxidant to the polymerization reaction terminator is 1:(0.10-0.20). By adopting the anti-aging system, the comprehensive anti-aging performance of the rubber product can be obviously improved.

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 relates to a sulfur-containing ether polyamine as well as a preparation method and application thereof, a chlorine-resistant anti-oxidation sulfur-containing ether separation membrane and a preparation method thereof, and belongs to the field of macromolecule materials. The invention provides a preparation method of sulfur-containing ether polyamine. The preparation method comprisesthe following steps: preparing a semi-aromatic poly-halogenated amide monomer; purifying a crude product of the semi-aromatic poly-halogenated amide monomer; preparing a sulfur-containing ether polyamine monomer; purifying a sulfur-containing ether polyamine solution. Polyamine with a reducing group of a high content, namely a sulfur ether (-S-), is synthesized for a first time, the reducing sulfur ether structure of the high content is capable of reacting with active chlorine, and most oxidative chlorine in a separation membrane oxidation treatment process can be consumed; meanwhile, by virtue of multiple amino groups and acyl chloride in a molecular chain, a multi-crosslinking structure can be formed, and the strength of an interface separation layer can be further improved, so that theseparation efficiency and properties of the separation membrane can be maintained, the service life of the separation membrane can be greatly prolonged, and the use cost of the separation membrane canbe reduced.

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 discloses bradyrhizobium monooxygenase, a gene for encoding the monooxygenase, a recombinant expression vector comprising the gene, a recombinant expression transformant, a method for preparing the monooxygenase by the recombinant expression transformant and an application of the monooxygenase to preparation of optical pure chiral sulfoxide, and particularly relates to a method for preparing a razole medicine by asymmetric oxidation of catalytic razole precursor sulfur ether. Compared with other methods for preparing optical pure sulfoxide, a product prepared by the monooxygenaseserving as a catalyst is high in optical purity, avoids generation of sulphone serving as a by-product and has the advantages of mild reaction conditions, simplicity and convenience in operation, easiness in amplification and the like. Therefore, the monooxygenase has an excellent industrial application prospect in synthesis of a series of medicine intermediates and razole medicines, particularlyright-handed rotation lansoprazole.

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 belongs to the technical field of drinking water treatment, and discloses a method for removing odor substances from source water of domestic drinking water. The method comprises the following steps: a, carrying out micro / nano pure oxygen aeration oxidation treatment on to-be-filtered water which is subjected to coagulating sedimentation treatment, releasing a lot of micro / nano pure oxygen bubbles from mixed high-oxygen water caused by a pressure drop, and oxidizing to remove sulfur ether and thiol odor substances; and b, filtering the to-be-filtered water which is subjected to micro / nano pure oxygen aeration through an active anthracite filter chamber, and further removing adsorbable odor substances by using the absorption action. According to the method disclosed by the invention, oxidation of micro / nano pure oxygen bubbles is organically combined with absorption action of a novel filter material active anthracite, so that the removal effect on a plurality of odor substances is greatly improved; the method is environment-friendly and healthy; a by-product is not generated in the treatment process; the water quality is not affected; a new odor substance is not generated; the method disclosed by the invention is low in cost, flexible in application and suitable for transformation of the conventional water treatment processes built in China; and the transformation can only be carried out on the basis of an original sand filter chamber of a water plant.

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 relates to lubricating oil special for a motorbike. The lubricating oil comprises, by mass, 25-35 parts of base oil POA, 55-60 parts of naphthenic-base base oil, 0.4-0.6 parts of large-base-number synthesis calcium sulfonate which is an additive, 0.3-0.5 part of sulfur phosphorous butyl octyl group zinc salt which is an additive, 1.0-3.5 parts of sulfur ether phenol type antioxidant. 0.2-1.0 part of terpolymer of ethylene, propylene and non-conjugated dienes, 1-3 parts of metal deactivator, 5-10 parts of antioxidant, 1-10 parts of viscosity index improver, 0.06-1.2 parts of pour point depressant and 0.01-0.02 part of anti-foaming agent, wherein mooney viscosity of the terpolymer is 25-35, the metal deactivator is phosphide or sulfide, and the antioxidant is 2,3-butylated hydroxytoluene. Base oil cost is controlled while high viscosity index and high wear resistance can be guaranteed.

The invention discloses an abietic acid sulfur ether derivative and a preparation method thereof. The name of the abietic acid sulfur ether derivative is abietic acid methylthio-methyl ester. The preparation method is that the abietic acid methylthio-methyl ester is prepared by directly esterifying common rosin, disproportionated rosin, dehydroabietic acid or hydrogenated rosin and dimethylsulfoxide serving as raw materials in the presence of a catalyst of potassium hydroxide. The abietic acid methylthio-methyl ester can be widely used in the fields such as coatings, printing ink, adhesives, synthetic rubber and the like. The abietic acid sulfur ether derivative has the advantages of: utilization of a new method for generating the abietic acid methylthio-methyl ester by directly performing an reaction on the common rosin, the disproportionated rosin, the dehydroabietic acid or the hydrogenated rosin and the dimethylsulfoxide in the presence of the catalyst of the potassium hydroxide, lower reaction temperature than a common esterification reaction, higher reaction speed, high yield, low product acid value and high stability, so the abietic acid sulfur ether derivative can be used as a plasticizer instead of abietate or applied in the industries such as coatings, printing ink and the like.

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 discloses a brewing method for ginseng brandy and belongs to liquor processing methods. Grape skin residues are fermented through adjusting the sugar degree, the fermented grape skin residues are repeatedly distilled, an inferior part containing few aroma components of few types is further concentrated to be used as wine base of the ginseng brandy, and the wine base is mixed with the tissue and organ of ginseng or extract of the ginseng for ageing. The brewing method has the advantages that in the fermentation process, sulfur dioxide, sulfur ether and sulfur alcohol of sulfur dioxide and other metabolite are not formed, and perfect aroma components of the ginseng brandy are guaranteed; the tissue and organ of the ginseng are screened, washed, subjected to impurity removing, chopped and subjected to superfine grinding, effective components are subjected to supercritical extraction, in this way, functional components and flavor components in the tissue and organ of the ginseng are easily released, and the situation that because the organ of the ginseng is too large, an unnecessary trouble is caused to brewing of the ginseng brandy is easily reduced; the flavor of the ginseng and the flavor of grape brandy are highlighted.

The invention provides an efficient method for selectively synthesizing a 2-hydroxybenzene sulfur ether compound. The method includes the steps of making a thiophenol compound shown in the formula (I) and an aryl halide compound shown in the formula (II) sufficiently react in a reaction medium with dimethyl sulfoxide as solvent under the effects of a catalyst, ligand and alkali carbonate to prepare a reagent, and conducting postprocessing on the reagent to prepare the 2-hydroxybenzene sulfur ether compound, wherein cuprous iodide serves as the catalyst, enaminone serves as the ligand, and cesium carbonate serves as the alkali carbonate. R1 in the formula (I) or the formula (II) is selected from one of alkyl and halogen. R2 in the formula (II) or the formula (III) is selected from one of methoxyl, halogen and trifluoromethyl. Raw materials can be easily obtained, the synthesis condition is gentle, the chemical selectivity is high and controllable, cost is saved, the requirements for devices are low, solvent and water can dissolve each other, postprocessing is convenient, the catalytic system is wide in adaptability, and the method is suitable for large-scale industrialized production.

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 high-reliability data flexible cable used for a building. The outer surfaces of four core wires are wrapped with a polyvinyl chloride layer. The outer surface of the polyvinyl chloride layer is wrapped with a thermoplastic polyurethane layer. The thermoplastic polyurethane layer is composed of 55-65 parts of low-density polyethylene of which the melt index is 1 g / 10 min-8 g / 10 min, 38-42 parts of high-density polyethylene of which the melt index is 1 g / 10 min-8 g / 10 min, 26-32 parts of diethyl phthalate, 18-25 parts of tri-octyl tri-meta-benzoate, 23-28 parts of calcium carbonate, 2-4 parts of calcium ricinoleate, 2-5 parts of bis-(3, 5-tert-butyl-4-hydroxyphenyl) sulfur ether, 1-5 parts of stearic acid and 0.5-1 part of polyethylene wax. The flame retardant property of material is improved, the oxygen index representing flame retardant property is quite high, and the char-forming effect is good in the combustion process of the material; a stable hollow composite char structure is formed and prevents secondary combustion and flame propagation of the material, and mechanical and physical properties of the indoor data cable are improved.

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.