659results about "Catalyst protection" patented technology

The invention provides a green and efficient petroleum passivator and a preparation method thereof, and belongs to the technical field of passivators. Carboxymethyl chitosan, phytic acid and beta-cyclodextrin are coupled to prepare a chitosan-phytic acid-cyclodextrin compound, bismuth, lanthanum, cerium and aluminum are compounded, and the green and efficient petroleum passivator is prepared through tannic acid polymerization modification. The prepared green and efficient petroleum passivator is green, safe, non-toxic and efficient, has good capturing and passivating capacity on ions such as iron, nickel and vanadium, greatly improves the activity of a catalyst, prolongs the service life of the catalyst, and has wide application prospects.

The invention discloses a method for synthesizing electronic-grade ethyl acetate through catalytic esterification of acidic ion exchange resin, and belongs to the technical field of ethyl acetate preparation. The method comprises the following steps: mixing crosslinked polystyrene white balls and a swelling agent, and dropwise adding concentrated sulfuric acid for reaction to obtain S-PS resin; mixing an EDTA disodium salt saturated solution and a polyacrylic acid solution, adding a cross-linking agent and an emulsifier, and carrying out a cross-linking curing reaction to obtain EDTA microcapsules; the preparation method comprises the following steps: dispersing S-PS resin in a solvent, adding EDTA microcapsules, a dehydration condensation agent and a catalyst, reacting under the protection of inert gas, and filtering and recovering after the reaction is finished to obtain S-PS-EDTA resin; mixing glacial acetic acid, absolute ethyl alcohol and S-PS (at) EDTA resin for reaction, and filtering and collecting liquid after the reaction is finished; and rectifying the collected liquid to obtain the product. According to the method provided by the invention, metal impurities can be chelated in the synthesis process, and the electronic-grade ethyl acetate with high purity and low impurity content is produced.

The invention discloses a method for preparing dimethyl carbonate through reaction of CO and methyl nitrite, belongs to the technical field of preparation of dimethyl carbonate, and aims to solve the problem that in the prior art, in the process of preparing dimethyl carbonate through catalysis of reaction of CO and methyl nitrite, the reaction time is short. The preparation method specifically comprises the following steps: in an inert gas atmosphere, mixing and stirring isocyanatopropyltriethoxysilane and N, N-dimethylformamide, raising the temperature of a reaction system to 50-60 DEG C, carrying out a reaction for 1-2 hours, and carrying out a reaction for 1-2 hours, so as to obtain a reaction solution; and 3-aminopropionic acid is added into the reaction system. According to the method, silicon-aluminum coating, potassium modification and 18-crown-6-ether modification are sequentially performed after a halogen-free palladium-copper catalytic system is prepared, so that the conversion rate of impurities and the chromatic value of a product are reduced, the conversion rate of methyl nitrite is effectively increased, and the service life of the catalyst is effectively prolonged.

The invention provides a sulfur-tolerant shift pre-transformation protective agent as well as a preparation method and application thereof, and relates to the technical field of sulfur-tolerant shift. The magnesium aluminate spinel, the nickel aluminate spinel and the activated carbon are used as composite carriers, the cobalt is used as a main conversion active component, the detoxification carriers have good adsorption and removal effects on arsenic compounds and small-particle impurities, the arsenic capacity is large and is not influenced by the content of hydrogen sulfide, the conversion activity of the protective agent is moderate, the temperature rise of a bed layer is controllable, and the conditions of large temperature rise and overtemperature are avoided; the influence of a water-carrying working condition on the catalyst is greatly avoided, and the catalyst is suitable for a pre-shift furnace and a detoxification tank in a sulfur-tolerant shift process.

The invention discloses a method for preparing organic carboxylic ester through olefin hydroesterification, and belongs to the technical field of organic carboxylic ester preparation. According to the technical scheme, terminal olefin, CO and alcohol serve as reactants, organic carboxylic ester with one more carbon is generated under the action of an acid auxiliary with zwitterionic liquid serving as a solvent, a phosphine ligand and a catalyst of a Pd compound, the structure of the zwitterionic liquid simultaneously contains an imidazole group and a sulfonate group, and the structural formula of the zwitterionic liquid is shown in the description. The concentration of the zwitterionic liquid in the reaction system is the solvent amount; the molar ratio of the Pd compound to the ionic liquid is (0.1-1): (1000-10000), the molar ratio of the phosphine ligand to the ionic liquid is (0.1-1): (10-100), and the molar ratio of the acid to the ionic liquid is (0.1-1): (2-50). The method has the advantages of mild reaction conditions, wide raw material application range, high reaction activity, good stability and the like, and is a reaction system with a very good industrial application prospect.

The invention discloses a preparation method of a combustion type warm cloud catalyst, the combustion type warm cloud catalyst comprises a first slurry and a second slurry, the first slurry and the second slurry are prepared by layered inclined pouring and curing, the first slurry comprises 35%-70% of an oxidizing agent, 3%-8% of a combustion agent, 10%-16% of a moisture absorbent and 13%-21% of an adhesive, the second slurry comprises 60%-70% of an oxidizing agent, 15%-17% of a combustion agent and 13%-25% of an adhesive. Through a method of layered pouring of two medicaments, hygroscopic salts are thoroughly isolated from external water vapor, the problem of moisture absorption failure caused by long-term storage is solved, the components and proportions of the oxidant and the incendiary agent are optimized, the combustion temperature is changed, the diameter of aerosol particles generated after combustion is controlled, and the problem of poor moisture absorption is solved.

The invention belongs to the technical field of chemical catalysts, and particularly discloses a low-temperature ethylene oxidation catalyst for enhancing oxygen vacancies and a preparation method and application thereof, and the preparation method comprises the following steps: S1, adding platinum particles into a solvent according to a certain proportion, dispersing and dissolving to obtain a platinum metal precursor solution; s2, dipping a titanium dioxide carrier into the platinum metal precursor solution obtained in S1 according to a certain proportion, uniformly stirring, and then drying and roasting to obtain a platinum-loaded titanium dioxide carrier; and S3, generating oxygen vacancies on the surface of the titanium dioxide carrier obtained in S2 through an oxygen vacancy pretreatment method to obtain the Pt / TiO catalyst. According to the low-temperature ethylene oxidation catalyst for enhancing the oxygen vacancy as well as the preparation method and the application, a Pt / TiO catalyst for efficiently and stably oxidizing ethylene is realized by introducing an oxygen vacancy mechanism, and the problems of insufficient activity, high humidity sensitivity and poor long-term stability of the existing low-temperature ethylene oxidation catalyst are solved.

The invention discloses a super-hydrophobic catalyst for catalyzing aqueous phase coupling of ethanol as well as a preparation method and application of the super-hydrophobic catalyst, and aims to provide a super-hydrophobic catalyst which can effectively improve the hydrophobic performance of a pure nickel-based catalyst, promote further coupling of low-carbon alcohol to higher alcohol and improve the water phase coupling of ethanol. According to the technical scheme, the preparation method comprises the following steps: adding a nickel-based catalyst and a super-hydrophobic polymer polydivinylbenzene into a ball milling tank according to a mass ratio of 1: (0-4); and carrying out ball milling for 2-10 hours at the rotating speed of 200-600 rpm to obtain the super-hydrophobic catalyst. The catalyst is used for synthesizing high-carbon alcohol from ethanol in a water phase; belongs to the technical field of synthesis.

The invention provides an efficient environment-friendly petroleum passivator as well as a preparation method and application thereof, and belongs to the technical field of passivators. The preparation method comprises the following steps: reacting bismuth nitrate with tetra (4-carboxyl phenyl) porphyrin and benzoic acid to prepare a carboxyl phenyl porphyrin bismuth-MOF material, reacting antimony nitrate with tetra (4-pyridyl) porphyrin and benzoic acid to prepare a pyridyl porphyrin antimony-MOF material, and performing sol-gel reaction on lanthanum isopropoxide and cerium isopropoxide to prepare lanthanum-cerium sol; the preparation method comprises the following steps: mixing calcium nitrate, magnesium chloride, organic acid, organic amine and hydrogen peroxide for reaction to prepare a calcium / magnesium organic matter, mixing the calcium / magnesium organic matter with other substances, adding the mixture into an acetonitrile / ethanol mixed solvent, and uniformly stirring and mixing to prepare the efficient environment-friendly petroleum passivator. The high-efficiency environment-friendly petroleum passivator prepared by the invention is green, safe, non-toxic and efficient, has better capturing and passivating effects on metal ions such as nickel and vanadium in the catalytic cracking reaction process of heavy oil, improves the activity of a catalyst, prolongs the service life of the catalyst, and thus, has a wide application prospect.

The invention discloses a preparation method of a molecular sieve coated noble metal-rare earth metal / TiO2 monolithic catalyst and application of the molecular sieve coated noble metal-rare earth metal / TiO2 monolithic catalyst in CO oxidation reaction, and relates to the technical field of industrial catalysis and waste gas treatment. The catalyst comprises a composite active component composed of noble metal and rare earth metal, a TiO2 carrier and a molecular sieve coating layer, wherein the composite active component composed of the noble metal and the rare earth metal is dispersed in the TiO2 carrier, and the TiO2 carrier is coated with the molecular sieve coating layer. The catalyst provided by the invention shows excellent catalytic performance and excellent sulfur poisoning resistance and heavy metal poisoning resistance in CO oxidation reaction, has good economical efficiency and long-acting stability, and provides an efficient and stable CO oxidation catalyst technical scheme for flue gas treatment in the iron and steel industry.

The invention belongs to the technical field of preparation and application of materials, and particularly discloses a method for coating the surface of polyoxometallate with titanium dioxide and application, and the method comprises the following steps: providing polyoxometallate; according to the method, titanium source injection, inert gas purging, reaction gas injection and inert gas re-purging are used as an ALD cycle, multiple cycles are carried out under the same condition, and the titanium dioxide coating layer is deposited on the surface of polyoxometallate. The obtained titanium dioxide coating layer is compact and uniform, the polyoxometallate and the titanium dioxide coating layer cooperate with each other when the titanium dioxide coating layer is applied to the photocatalytic carbon dioxide reduction reaction, the catalytic activity is remarkably improved, and the defects that existing polyoxometallate is poor in stability, prone to agglomeration and the like are overcome in a targeted mode.

The invention belongs to the technical field of flue gas denitration, and particularly relates to a denitration catalyst, a preparation method thereof and application of the denitration catalyst in flue gas denitration of a cement kiln. The denitration catalyst provided by the invention is prepared from the following raw materials: 5 to 10 parts of montmorillonite powder, 60 to 85 parts of titanium dioxide, 1 to 2 parts of stearic acid, 4 to 6 parts of metavanadate, 2 to 4 parts of glass fiber, 3 to 5 parts of niobium phosphate, 1 to 3 parts of carboxymethylcellulose and 1 to 3 parts of polyoxyethylene. When the denitration catalyst provided by the invention is applied to cement kiln flue gas denitration, the main active component vanadium poisoning of the catalyst can be effectively avoided, and the denitration activity of the catalyst is further improved.

A preparation method of a hydrophobic catalyst for preparing methanol through hydrogenation of carbon dioxide comprises the following steps: (1) uniformly stirring and mixing a proper amount of precursors of copper, zinc and zirconium to obtain a precursor material; (2) putting the precursor obtained in the step (1) into a grinding tank, adding a proper amount of solvent, and simultaneously putting grinding balls into the grinding tank for grinding to obtain a ground material after the grinding is completed; (3) drying and roasting the ground material obtained in the step (2) to obtain a sample; and (4) carrying out laser irradiation treatment on the sample obtained in the step (3) to obtain the hydrophobic Cu / ZnO / ZrO2 catalyst. The catalyst prepared by the method has better activity and hydrothermal tolerance.

The present invention provides a hydrogenation catalyst for petroleum resin, the hydrogenation catalyst comprises a catalyst, the catalyst contains an active component main body expressed as a general formula of M1-M2 / SiO2-Al2O3, M1 is an alloy of Ni and Co, and the atomic ratio of Ni to Co is 2: 1-4: 1; m2 is a composite oxide of Mo and W, and the molar ratio of Mo to W is 1: 1-3: 1; and SiO2-Al2O3 is used as an aluminum silicate precursor and is subjected to hydrolytic condensation to form a composite carrier with a three-dimensional silicon-aluminum bond network structure. The invention relates to the technical field of petroleum resin catalysts. The surface of the carrier is anchored with double active components, namely nickel-cobalt alloy capable of efficiently cracking hydrogen and generating active hydrogen atoms and molybdenum-tungsten composite oxide capable of selectively adsorbing aromatic rings and sulfide molecules; and cracked hydrogen atoms can be quickly migrated to adsorption sites through the surface of the carrier, and aromatic ring hydrogenation saturation and deep removal of sulfur impurities can be synchronously realized, so that the working efficiency of the hydrogenation catalyst is effectively improved.

The invention provides a preparation method of modified zinc oxide nanoparticles as well as a product and application thereof, the preparation method comprises two steps of solvothermal reaction and surface modification, combines the advantages of chemical reaction formaldehyde removal of organic amine substances and photocatalytic degradation formaldehyde removal of inorganic nanoparticles, and has the characteristic of efficient formaldehyde removal. Siloxane groups on the surfaces of the modified zinc oxide nanoparticles effectively improve the hydrophobicity of the surfaces of the zinc oxide nanoparticles, and prevent dust in air from being attached to damage the formaldehyde removal performance, so that the formaldehyde removal function is played for a long time.

The invention provides a preparation method of N1-(2-aminoethyl)-1, 2-ethylenediamine, which comprises the following steps: reacting iminodiacetonitrile with hydrogen in a reaction liquid system containing a solvent, a hydrogenation catalyst and a catalyst protective agent to generate N1-(2-aminoethyl)-1, 2-ethylenediamine, wherein the catalyst protective agent comprises one or more of nickel carbonyl, carbonyl iron, nickel tetramine and cobalt tetramine. According to the present invention, the catalytic activity reduction of the hydrogenation catalyst can be inhibited, the deactivation of the hydrogenation catalyst can be avoided, and the selectivity and the yield of the N1-(2-aminoethyl)-1, 2-ethylenediamine can be improved.

The invention belongs to the technical field of biochar preparation, water treatment and new materials, and discloses a composite material for sulfonamide antibiotic treatment, a preparation method and application, and the preparation method comprises the following steps: preparing sludge biochar SBC; mnO2 coated OSBC is prepared; aminated PCA is prepared; pCA-MnO2 (at) OSBC is prepared; the preparation method comprises the following steps: cutting absorbent cotton, ultrasonically cleaning with deionized water, drying, dispersing PCA-MnO2 coated OSBC into a polyvinyl alcohol PVA solution, dipping the absorbent cotton, dropwise adding glutaraldehyde for crosslinking, curing, dipping into a PCA-MnO2 coated OSBC suspension, and carrying out freeze-drying heat treatment. The composite material disclosed by the invention has relatively stable physical properties and chemical properties, can be efficiently separated from an aqueous solution and recycled after being degraded, and can achieve a relatively good degradation effect in various typical real water bodies.

The invention discloses an anti-alkali metal poisoning SCR (Selective Catalytic Reduction) catalyst and a preparation method and application thereof, and belongs to the field of catalysts for atmospheric governance, the SCR catalyst comprises the following components in percentage by mass: 80%-90% of TiO2, 0.5%-1.5% of V2O5, 3%-5% of WO3 and 3%-10% of a cocatalyst; the cocatalyst comprises one or two of zirconium phosphate and titanium phosphate. The SCR catalyst provided by the invention is high in targeting property and remarkable in alkali metal poisoning resisting effect. TiO2 is used as a main carrier, V2O5 provides a main catalyst active component, WO3 can improve the thermal stability and acidity of the catalyst, a cocatalyst loses activity after capturing alkali metal, and an effective chemical barrier is constructed by sacrificing the cocatalyst; the path that alkali metal ions continue to diffuse into the coating and react with key V-OH acidic sites is blocked, and the alkali poisoning resistance is qualitatively improved, so that the denitration activity of the catalyst is preserved.

The invention discloses a method for high-selectivity synthesis of ethylene sulfate from ethylene sulfite. An organosilane functional group is introduced to the surface of a TS-1 molecular sieve, the hydrophilic and hydrophobic degree of TS-1 is regulated and controlled, water is effectively prevented from being enriched around TS-1, and DTD hydrolysis side reaction is reduced, so that the stability and oxidation performance of the catalyst are improved, and the dispersity of TS-1 in a system is improved. The TS-1 treated by octadecyl trichlorosilane has moderate-strength hydrophobicity, so that the adsorption of substrates ES and H2O2 on the surface of the catalyst can be ensured, the aggregation of H2O molecules on the surface can be reduced, and the hydrolysis of DTD on the surface of the catalyst is inhibited. When the modified TS-1 molecular sieve catalyzes an ES oxidation reaction, DTD selectivity can reach 95% or above, and the modified TS-1 molecular sieve has good stability and reusability. The method is simple to operate, low in cost and suitable for large-scale industrial production.

The present invention provides a catalytic cracking multifunctional auxiliary agent and a preparation method therefor. The catalytic cracking multifunctional auxiliary agent comprises the following raw materials: 8%-30% of a first ligand, 5%-30% of a second ligand, 5%-25% of a solubilizer, 10%-25% of metal components, and 5%-30% of water. The catalytic cracking multifunctional auxiliary agent provided by the present invention can inhibit the contamination of metals, such as nickel, vanadium, and calcium, in a catalytic cracking process, can achieve a synergistic effect with a catalyst, and has a synergistic function.

The invention discloses a sulfur-resistant non-noble metal catalyst for removing carbon monoxide and a preparation method thereof. The preparation method comprises the following steps: step 1, dissolving aluminum oxide, cerium-containing metal salt and a precipitator in a solvent, fully mixing, and dispersing to obtain a colloidal dispersion system; a hydrothermal product is obtained after the hydrothermal reaction, and solid powder A is obtained after the hydrothermal product is roasted; step 2, dropwise adding a copper-containing metal salt solution into the solid powder A under a ball-milling condition to obtain a turbid liquid; carrying out heat preservation roasting to obtain solid powder B; 3, roasting the molybdenum-containing metal salt, and performing thermal decomposition to obtain solid powder C; and 4, adding the solid powder C obtained in the step 3 into the turbid liquid of the solid powder B, dispersing, and roasting to obtain the required catalyst. The obtained catalyst is stable in overall structure and can still keep good catalytic performance in a sulfur-containing environment.

A fluorocarbon / palladium / magnesium-scandium hydrogen-chromic film and a preparation method thereof are provided. The film includes a magnesium-scandium composite film layer, a palladium catalytic layer, and a fluorocarbon film layer that are sequentially arranged on a substrate. The preparation method includes: growing the magnesium-scandium composite film layer on the substrate first, then growing the palladium catalytic layer in situ on the magnesium-scandium layer, and finally depositing the fluorocarbon film layer on Pd. According to the present invention, the catalytic effect of palladium is utilized to promote reversible conversion between hydrogen and hydrogen atoms during hydrogen absorption and dehydrogenation stages, and a composite scandium element is added to accelerate diffusion of the hydrogen atoms in a magnesium matrix and accelerate formation and decomposition of a hydride, such that the film can be repeatedly and rapidly switched between a reflective state and a transparent state.

The invention relates to a high-stability palladium-based molecular sieve catalyst as well as a preparation method and application thereof. The high-stability palladium-based molecular sieve catalyst comprises an SSZ-13 hydrophobic modified molecular sieve and an active component loaded on the SSZ-13 hydrophobic modified molecular sieve, the active component comprises palladium oxide particles; based on 100 wt% of the total mass of the high-stability palladium-based molecular sieve catalyst, the content of the active component in the high-stability palladium-based molecular sieve catalyst is 0.5 wt%-5 wt%. According to the high-stability palladium-based molecular sieve catalyst, an SSZ-13 hydrophobic modified molecular sieve is used as a carrier, so that the adsorption capacity of the catalyst to water is weakened, the purpose of reducing water poisoning inactivation of palladium oxide substances is achieved, inactivation of the palladium oxide substances under the high-temperature hydrothermal condition is avoided, and the methane catalytic oxidation activity, the hydrothermal aging performance and the stability of the catalyst are obviously improved.

The invention relates to the technical field of phase-change materials, and discloses a light-operated composite phase-change material catalyst and a preparation method and application thereof, and a light-operated phase-change composite material is a paraffin-encapsulated metal M / halloysite / sodium alginate composite phase-change material; according to the metal M / halloysite / sodium alginate composite phase change material for packaging the paraffin, halloysite / sodium alginate aerogel loaded by metal M nanoparticles is used as a supporting material, and the paraffin is packaged in the metal M / halloysite / sodium alginate composite phase change material. According to the invention, the metal M / halloysite / sodium alginate composite phase change material for packaging paraffin is prepared by using the halloysite nanotube, the aerogel in the invention has a relatively large paraffin encapsulation amount, the encapsulation efficiency can reach up to 86%, and the phase change material can still maintain good mechanical and chemical stability after multiple heat absorption and release cycles. The melting and solidification of paraffin in the composite phase change material are controlled by turning on and turning off the light source, and the exposure and shielding of active sites are realized, so that the catalytic reaction is accurately started and stopped, and the complete starting and pausing of the reaction are realized.

The invention provides a method for preparing a coke-inhibiting passivator, which belongs to the technical field of passivators and comprises the following steps: mixing antimony trioxide, water, amino acid and organic amine, adding hydrogen peroxide dropwise, reacting, cooling to obtain a passivation component A; in a nitrogen atmosphere, reacting an amino-modified SiO 2 , methacrylate, and methanol were mixed, heated and stirred, the solid was filtered out, and after Soxhlet extraction, vacuum drying was performed to obtain branched amino-modified SiO 2 ; Add lanthanum phosphate, barium titanate, cerium sulfate, sulfuric acid solution, and hydrogen peroxide to deionized water and stir evenly, add sodium hydroxide to adjust the pH value to obtain passivation component B; mix passivation component A and passivation component B, add branched amino-modified SiO 2 The invention can effectively inhibit the formation of coke, reduce the hydrogen content and increase the light oil yield.

The invention belongs to the technical field of catalysts, and particularly relates to a formaldehyde removal catalyst and a preparation method and application thereof. The formaldehyde removal catalyst is prepared by carrying out hydrothermal reaction and roasting treatment on a mixture of the following raw materials: metal salts including Mn salt, Co salt and Fe salt; an organic precursor, wherein the organic precursor comprises 2-nitroaniline and carboxymethyl cellulose; wherein the molar ratio of the Mn element to the Co element to the Fe element in the metal salt is (4.5 to 5.0): (2.0 to 2.5): (1.5 to 1.8); the ratio of the total mass of the Mn element, the Co element and the Fe element in the metal salt to the mass of the organic precursor is (80-85): (15-20). According to the formaldehyde removal catalyst, the metal elements are loaded on the hydrophobic carbon layer of the nitrogen-containing structure, so that the problem that the toluene adsorption capacity is weak due to the fact that a traditional catalyst does not have specific sites is solved, and the problem that the catalyst is inactivated due to the fact that multiple pollutants compete for active sites and a product overflows slowly can also be solved.

The invention discloses a polyimide-derived graphene coated catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) weighing a supported platinum catalyst, adding the supported platinum catalyst into a polyamide acid solution, and fully mixing to obtain a mixture; (2) transferring the mixture into a high-pressure kettle, heating the mixture in a drying oven at 150-200 DEG C for 8-15 hours, cooling the obtained mixture to room temperature, and performing washing, suction filtration and vacuum drying to obtain a dried product; and (3) grinding the dried product, performing high-temperature roasting in a nitrogen atmosphere, and then performing secondary high-temperature roasting in an inert protective atmosphere, a hydrogen atmosphere or a vacuum state to prepare the polyimide-derived graphene-coated platinum catalyst. The invention provides application of the polyimide-derived graphene-coated platinum catalyst in preparation of p-aminophenol through nitrobenzene hydrogenation rearrangement, and the polyimide-derived graphene-coated platinum catalyst shows high conversion rate, selectivity and stability.

The invention belongs to the technical field of antibiotic pollutant degradation, and discloses a method for degrading antibiotic pollutants by using boron-carbon co-regulated nanoscale zero-valent iron as an activating agent, which comprises the following steps: step 1, synthesizing carbon-coated nanoscale zero-valent iron, marked as Fe0-C, through a hydrothermal method and a carbothermic method; and step 2, mixing the Fe < 0 >-C obtained in the step 1 with crystal boron, adding the mixture into sewage containing antibiotic pollutants, and then adding persulfate as an oxidizing agent to degrade the antibiotic pollutants. A boron-carbon co-regulation method is adopted to realize the passivation resistance of the nano zero-valent iron in the whole process from preparation, storage to application, and the nano zero-valent iron is applied to the process of activating persulfate to degrade tetracycline.

The invention belongs to the technical field of organic synthesis, and particularly relates to 1, 1, 1, 3-tetrachloropropane and a synthesis method thereof. The synthesis method comprises the following steps: adding a carbon-coated elemental iron catalyst, a cocatalyst and carbon tetrachloride into a reaction kettle, heating to a reaction temperature, introducing ethylene to a reaction pressure, carrying out a reaction while keeping the temperature and the pressure to obtain a crude tetrachloropropane product, and filtering and rectifying the crude tetrachloropropane product to obtain 1, 1, 1, 3-tetrachloropropane, the preparation method of the coated elemental iron catalyst comprises the following steps: dissolving ferric citrate in ethanol, uniformly stirring to obtain a precursor solution, drying in a vacuum drying oven at 50 DEG C to obtain precursor powder, and performing high-temperature pyrolysis on the precursor powder in an inert atmosphere to obtain the carbon coated elemental iron catalyst. The synthesis reaction of 1, 1, 1, 3-tetrachloropropane disclosed by the invention has the advantages of high carbon tetrachloride conversion rate, high tetrachloropropane selectivity, short reaction time and small by-product generation amount.

The invention discloses a preparation method of a catalyst for a dehydration condensation reduction reaction, an obtained product and application, and the preparation method comprises the following steps: laying activated carbon in a fixed bed, then continuously introducing a mixed solution of copper nitrate, zinc nitrate and zirconium nitrate into the fixed bed, and enabling the mixed solution to be in full contact with an activated carbon layer; roasting the activated carbon which is in full contact with the mixed solution to obtain activated carbon loaded with copper oxide-zinc oxide-zirconium oxide; dispersing the active carbon loaded with copper oxide-zinc oxide-zirconium oxide into an organic solvent, then adding a vulcanizing agent to carry out vulcanization reaction, and filtering, washing and drying after the reaction to obtain the catalyst for the dehydration condensation reduction reaction. The preparation method of the catalyst is simple and convenient to operate, low in cost and small in environmental pollution, can be applied to dehydration condensation reduction reaction of various ketones or aldehydes and amines, improves the selectivity of the reaction, reduces side reaction products, has a good catalytic effect, and has an industrial development prospect.