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30results about How to "No apparent deactivation" patented technology

Glycol catalyst synthesized by hydrogenating oxalic ester and preparation method and application thereof

The invention discloses a glycol catalyst synthesized by hydrogenating oxalic ester and a preparation method and an application thereof. The catalyst has the chemical formula of CuO-AOx / Al2O3, wherein A is one or more than one metallic element of Zn, Mn, Mg and Cr, x is half of the valence number of A, the content of CuO accounts for 40 percent to 80 percent of the catalyst mass, the content of AOx accounts for 5 percent to 40 percent of the catalyst mass and the content of Al2O3 accounts for 5 percent to 30 percent of the catalyst mass. The catalyst has high activity and selectivity at low temperature and under low pressure, the energy and power consumption in production can be reduced greatly and the catalyst has good stability and long service life. The preparation method of the catalyst is simple and raw materials as industrial products are easily obtained and have low price.
Owner:DANYANG DANHUA COAL CHEM

Method for synthesizing gamma, delta-nonsaturated ketones compound

The invention discloses a method for synthesizing a gamma, delta-nonsaturated ketones compound. The method comprises the following steps: under protection of inert gas, nonsaturated alcohol and 2-alkyloxy propylene are taken as the raw materials, Bronsted acid functional ionic liquid is dissolved in a high boiling solvent as a catalyst, a rearrangement reaction is carried out, after the reaction is complete, the materials is subjected to post-treatment to obtain the gamma, delta-nonsaturated ketones compound and a catalyst solution. The used Bronsted acid functional ionic liquid catalyst has a plurality of physical and chemical properties which are similar with the conventional ionic liquid, the acid functional group is introduced, so that the catalyst has the advantages of high acid site density, adjustable acidity, uniform acidity distribution and difficult loss of acidity. An autoclave series mode is used for realizing the continuous synthesis of nonsaturated ketone and continuous recycling of the catalyst.
Owner:ZHEJIANG NHU CO LTD +2

Supported cobaltosic oxide catalyst and preparation method and application thereof

The invention discloses a supported cobaltosic oxide catalyst and a preparation method and application thereof. The supported cobaltosic oxide catalyst comprises precious metal, precious metal oxide and cobaltosic oxide, the ratio of the mass of the precious metal to the total mass of the precious metal and Co3O4 is 1-10:100, and the supported cobaltosic oxide catalyst is of a one-dimensional structure. The preparation method includes: subjecting cobalt salt and precipitator water solution to coprecipitation in a dihydric alcohol system, adding precious metal salt solution, performing hydrothermal treatment, drying and roasting to obtain the supported cobaltosic oxide catalyst, and preparing the supported cobaltosic oxide catalyst by combining a coprecipitation method and a hydrothermal synthesis method. The preparation method is simple and easy to operate, the prepared catalyst is uniform in morphology and good in stability, methane conversion rate is up to 100% when CH4 is at the reaction temperature below 400 DEG C by applying the catalyst catalytic combustion reaction of the methane, and good low-temperature oxidative activity of the methane is realized.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI

RuCo alloy catalyst, preparation method thereof and application thereof in ammonia synthesis

The invention discloses a RuCo alloy catalyst capable of breaking a restrictive relationship, a preparation method of the RuCo alloy catalyst and an application of the RuCo alloy catalyst to ammonia synthesis. The RuCo alloy catalyst comprises a nitrogen-doped carbon carrier and active metals Ru and Co loaded on the carbon carrier. According to the invention, the highly dispersed RuCo alloy monatomic catalyst is synthesized by a reduction method; according to the catalyst, Ru and Co have a synergistic effect; dissociation of N2 and desorption of NHx are promoted to occur on different active sites; therefore, the restrictive relationship existing in the synthetic ammonia reaction is broken through; the obtained RuCo alloy monatomic catalyst has excellent synthetic ammonia catalytic performance under a mild condition; the ammonia synthesis rate reaches 11.2 mmol NH3 / (gcat.h) under the condition of 400 DEG C, the catalyst has extremely high catalytic stability, meanwhile, the preparationmethod of the catalyst is simple, the utilization rate of metal atoms is high, and the catalyst has obvious industrial application value.
Owner:FUZHOU UNIV

Core-shell iron-based catalyst for directly producing aromatic hydrocarbon from synthesis gas as well as preparation method and application of the core-shell iron-based catalyst

The invention discloses a core-shell iron-based catalyst for directly producing aromatic hydrocarbon from synthesis gas. According to the catalyst, a nano ZSM-5 molecular sieve with the silica-aluminaratio of 30-200 is used as a shell layer, and surface pre-modified nano metal oxide particles are used as a core; the particle size of the nano metal oxide is 1-3 nm, the nano metal oxide is uniformly distributed, and the content of metal elements is 0.1-7% wt; wherein the aromatic hydrocarbon is C7-C11 aromatic hydrocarbon. The catalyst provided by the invention has high CO conversion rate and high aromatic hydrocarbon selectivity; the CO conversion rate can reach 42.6%; the selectivity of aromatic hydrocarbons in total hydrocarbons reaches 47.6%; the content in an oil phase reaches 78.1%; in addition, aromatic hydrocarbon products are concentrated, the selectivity of by-products CO2 and CH4 is low, the CO2 selectivity is only about 18.9%, the CH4 selectivity is only about 14.0%; the problems that the aromatic hydrocarbon selectivity and yield are low, the selectivity of by-products CO2 and CH4 is high, and the CO utilization rate is low are solved.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI

Catalyst for preparing ethylene glycol through dimethyl oxalate hydrogenation and preparation method and application of catalyst

The invention discloses a catalyst for preparing ethylene glycol through dimethyl oxalate hydrogenation. The catalyst is of a hollow cyclic structure and comprises the following components in parts byweight: 1-50 parts of an active component, 0-10 parts of a metal aid and 30-90 parts of a carrier, wherein the active component is at least one of copper, silver, nickel, cobalt, gold and iron; the carrier is at least one of SiO2, carbon nanotubes, activated carbon, graphene, mesoporous carbon, ZrO2, Al2O3, ZnO, SBA-15, HMS, ZSM-5, MCM-41 and MCM-48. The catalyst for preparing ethylene glycol through dimethyl oxalate hydrogenation, which is disclosed by the invention, is high in activity, good in stability and high in selectivity, the conversion rate of dimethyl oxalate is greater than 99.9%,the selectivity of ethylene glycol is greater than 96%, the reaction has a small amount of byproducts, target products are easy to separate, and the catalyst is stable in reaction and free of conspicuous deactivation phenomena after long-term single tube operation of 1000 hours.
Owner:高化学(江苏)化工新材料有限责任公司

Catalyst for preparing ethylene glycol by dimethyl oxalate hydrogenation, and preparation and use thereof

The invention discloses a catalyst for preparing ethylene glycol by dimethyl oxalate hydrogenation, which is characterized by containing the following components by weight percent: 30 to 60% of active metal, 5 to 30% of metal additive and 20 to 60% of carrier, wherein the active metal is one or any combination of more than two of the group consisting of zinc, magnesium, aluminum, silver, ruthenium and iridium, and the carrier is silicon dioxide. The invention further discloses a preparation method of the catalyst, comprising the steps of: 1) mixing and dissolving soluble salts of the copper and soluble salts of the metal additive to prepare aqueous solution, adding a silicon source of the carrier to the aqueous solution to form a mixed liquid A; 2) dissolving precipitating agent in water,dropwise adding the mixed solution A to aqueous solution B under stir, and put the resultant solution on standing; 3) filtering; 4) drying; 5) calcining; 6) forming; and 7) reducing. The catalyst of the invention has the advantages of moderate reaction conditions, high activity, good stability, high selectivity, environmental friendliness and simple preparation process.
Owner:山东华鲁恒升集团德化设计研究有限公司

Methane dry reforming reaction under microwave condition and catalyst thereof

The invention provides a methane dry reforming reaction under a microwave condition and a catalyst thereof. According to the methane dry reforming reaction, the catalyst comprising a composite metal oxide M / CaZrO3 and SiC is utilized to perform reforming catalysis on CH4 and CO2 under a microwave condition to generate synthesis gas with main products of H2 and CO, and M is at least one metal element of Ni and Co. The methane dry reforming reaction provided by the invention is low in reaction temperature, low in energy consumption and high in conversion rate of methane and carbon dioxide, and the catalyst can keep relatively good activity for a long time in the use process and has good stability.
Owner:XIANGTAN UNIV

Functional carbon-based magnetic solid acid catalyst synthesized by using one-pot method and application thereof in catalyzing hydrolysis of bagasse to produce sugar

The invention relates to a one-pot method for synthesizing a functional carbon-based magnetic solid acid catalyst. According to the invention, nanometer ferroferric oxide, glucose, citric acid, vanillin and hydroxyethyl sulfonic acid are used as raw materials, and a novel one-step hydrothermal precipitation-sulfonation method is adopted for synthesizing the carbon-based magnetic solid acid catalyst C-SO3H@Fe3O4 / C. Research results show that the synthesized catalyst has acidity of up to 1.23 mmol / g and magnetic strength of 15.65 Am<2> / kg. When the catalyst is used for hydrolyzing bagasse havingundergone alkali-freezing pretreatment at 180 DEG C, glucose with a yield of 62.59% and total reducing sugar with a yield of 73.01% can be obtained. In addition, the used catalyst can be separated and recovered under the action of an external magnetic field, and the recovery rate of the used catalyst can reach 93.18%. After the catalyst is recycled five times, the catalyst can still catalyze thehydrolysis of the bagasse to obtain glucose with a yield of 54.47% and total reducing sugar with a yield of 60.65% of total reducing sugar. The C-SO3H@Fe3O4 / C catalyst provided by the invention can efficiently catalyze the conversion of bagasse into fermentable sugar, and the catalyst shows good catalytic activity and stability.
Owner:HENAN INST OF SCI & TECH

Doped copper silicate nanotube catalyst for methyl acetate hydrogenation as well as preparation method and application of doped copper silicate nanotube catalyst

The invention provides a doped copper silicate nanotube catalyst for methyl acetate hydrogenation, which comprises a carrier, a main catalyst and a cocatalyst, wherein the carrier is silicon dioxide,the main catalyst is oxide of Cu, the cocatalyst is oxide of metal X, and the metal X is one of alkali metal, alkaline earth metal or rare earth element; the main catalyst accounts for 30-40% of the mass of the carrier, and the cocatalyst accounts for 0.5-10% of the mass of the carrier. Meanwhile, the invention also provides a preparation method of the catalyst and application of the catalyst in preparation of ethanol through hydrogenation of methyl acetate. The catalyst provided by the invention has a tubular morphology structure and good stability, can maintain a conversion rate of 92% or above of methyl acetate and ethanol selectivity of 95% or above under the conditions of a low hydrogen-ester ratio, a methyl acetate liquid phase space velocity of 0.5-1 and a low reaction temperature of 235 DEG C, and greatly reduces the equipment investment cost.
Owner:SHAANXI YANCHANG PETROLEUM GRP

Preparation method of naphthyl sulfonic acid group-modified SBA-15 and application of naphthyl sulfonic acid-modified SBA-15 in synthesis of structural phospholipid rich in unsaturated fatty acids

The invention discloses a preparation method of naphthyl sulfonic acid group-modified SBA-15 and application of the naphthyl sulfonic acid-modified SBA-15 in synthesis of a phospholipid, the preparation method comprises: using SBA-15, a naphthyl silane coupling agent and a water-free organic solvent as raw materials so as to prepare SBA-15-Na; and then carrying out sulfonation on the obtained SBA-15-Na so as to obtain the naphthyl sulfonic acid group-modified SBA-15; and the application comprises: using phospholipid and unsaturated fatty acid methyl ester or unsaturated fatty acid ethyl esteras raw materials to obtain a structural phospholipid rich in n-3 type, n-6type, n-7 type and n-9 type unsaturated fatty acids under the catalysis of the naphthyl sulfonic-acid group-modified SBA-15. The application scope of the phospholipid in drugs and foods can be expanded by use of the modified phospholipid, the application market of phospholipid can be expanded, the defects that lipase or phospholipase is expensive in price, not easy to recycle and the like in the process of producing the structural phospholipid by an enzymic method are solved, and the preparation method of the structuralphospholipid is improved.
Owner:DALIAN POLYTECHNIC UNIVERSITY

A gold catalyst modified with sulfur-containing silane coupling agent for acetylene hydrochlorination

The invention discloses a gold-based catalyst modified by a sulfur-containing silane coupling agent and its preparation method and application. The ions account for 0.1% to 3% of the weight of the catalyst. The preparation of the catalyst is mainly divided into two steps: 1) modifying the sulfur-containing silane coupling agent to the surface of activated carbon; 2) using chloroauric acid as a precursor, selecting a suitable solvent to load it by stirring, centrifuging, filtering and drying onto the sulfur-silane-modified activated carbon synthesized in step 1) to obtain the gold-based catalyst modified by the sulfur-containing silane coupling agent. The gold-based catalyst modified by the sulfur-containing silane coupling agent prepared by the present invention is used in the hydrochlorination of acetylene, and exhibits good catalytic activity and vinyl chloride selectivity and excellent stability. Catalysts for acetylene hydrochlorination with industrial application potential.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

A kind of preparation method of phenylsulfonic acid group modified sba-15 composite material and its application in the synthesis structure phospholipid

The invention discloses a preparation method of a phenylsulfonic acid-modified SBA-15 composite material, using SBA-15, a phenylsilane coupling agent and an anhydrous organic solvent as raw materials to prepare SBA-15-Ph; The obtained SBA‑15‑Ph is sulfonated to obtain a phenylsulfonic acid group modified SBA‑15 composite material; the present invention also discloses the application of the phenylsulfonic acid group modified SBA‑15 composite material in the synthesis of structural phospholipids, Using phospholipids and fatty acid methyl esters or fatty acid ethyl esters as raw materials, under the catalysis of phenylsulfonic acid group-modified SBA-15 composite materials, a new type of structural phospholipids is obtained. The modified phospholipids prepared by the present invention broaden the application range of phospholipids, and at the same time, the residual organic matter in the product is less; it can also solve the disadvantages of expensive enzyme sources, difficult recycling, and not wide reaction conditions in the process of enzymatic production of structural phospholipids, and finally improve the structure Preparation method of phospholipids.
Owner:DALIAN POLYTECHNIC UNIVERSITY

A kind of preparation method of propylsulfonic acid group-modified sba-15 and its application in synthesizing structural phospholipids

The invention discloses a method for preparing SBA-15 modified by propylsulfonic acid groups. SBA-15, propylsilane coupling agent and anhydrous organic solvent are used as raw materials to prepare SBA-15-Pr; SBA‑15‑Pr is sulfonated to obtain propyl sulfonic acid modified SBA‑15; the invention also discloses the application of propyl sulfonic modified SBA‑15 in the synthesis of structural phospholipids, using phospholipids and fatty acid methyl esters Or fatty acid ethyl ester as raw material, under the catalysis of SBA‑15 modified by propylsulfonic acid group, to obtain structural phospholipids. The modified phospholipids prepared by the present invention are catalyzed and produced by heterogeneous catalysts, which have no organic residues in industrially produced phospholipids, and can also solve the shortcomings of expensive enzyme sources, difficult recycling, and harsh reaction conditions in the process of enzymatic production of structural phospholipids. Improved preparation of structured phospholipids.
Owner:DALIAN POLYTECHNIC UNIVERSITY

A method for synthesizing γ, δ-unsaturated ketones

The invention discloses a method for synthesizing a gamma, delta-nonsaturated ketones compound. The method comprises the following steps: under protection of inert gas, nonsaturated alcohol and 2-alkyloxy propylene are taken as the raw materials, Bronsted acid functional ionic liquid is dissolved in a high boiling solvent as a catalyst, a rearrangement reaction is carried out, after the reaction is complete, the materials is subjected to post-treatment to obtain the gamma, delta-nonsaturated ketones compound and a catalyst solution. The used Bronsted acid functional ionic liquid catalyst has a plurality of physical and chemical properties which are similar with the conventional ionic liquid, the acid functional group is introduced, so that the catalyst has the advantages of high acid site density, adjustable acidity, uniform acidity distribution and difficult loss of acidity. An autoclave series mode is used for realizing the continuous synthesis of nonsaturated ketone and continuous recycling of the catalyst.
Owner:ZHEJIANG NHU CO LTD +2

A kind of preparation method of nickel-magnesium solid solution catalyst

The invention provides a method for preparing a nickel-magnesium solid solution catalyst. The flaky nano-nickel-magnesium solid solution is mixed with each other through different nickel-magnesium ratios, and the size is 20-40nm. The specific preparation method includes the steps: at room temperature, the metal precursor magnesium The salt is completely dissolved in distilled water and precipitated by lye, and then continue to add metal nickel salt for further precipitation. After fully stirring evenly, let it stand for a period of time, wash with a large amount of water, and dry to obtain a flaky nickel-magnesium solid solution catalyst. The obtained precursor was calcined at 450-550° C. for 3-8 hours to obtain a flaky nickel-magnesium solid solution catalyst with stable morphology. The invention has good dispersibility, controllable components, simple method, easy operation, good stability as a carrier, very good catalytic activity for preferential oxidation of carbon monoxide, wide temperature operating window and excellent catalytic stability and durability.
Owner:JILIN UNIV

A preparation method of loaded iron sba-15 and its application in the synthesis of structural phospholipids

The invention discloses a method for preparing iron-loaded SBA-15. Using SBA-15, soluble iron salt and anhydrous organic solvent as raw materials, metallic iron is loaded onto SBA-15 mesoporous molecular sieves through an impregnation method. The method prepares The modified SBA‑15 has a larger specific surface area and stronger acidity. The invention also discloses the application of iron-loaded SBA‑15 in the synthesis of structural phospholipids, using phospholipids and fatty acids with different carbon chain lengths as raw materials, under the catalysis of modified SBA‑15, to obtain short and medium carbon chains, n‑3 Structural phospholipids of type or n‑6 fatty acids. The preparation method of the catalyst involved in the invention has simple process and low cost, and conforms to the development trend of green chemical industry. The method for synthesizing the structured phospholipids involved in the present invention has the advantages of economy, environmental protection, and high efficiency, and can overcome the disadvantages of the current enzymatic methods, such as expensive enzyme sources, difficult recovery, and lack of universal applicability, and further improve the preparation method of the structured phospholipids.
Owner:DALIAN POLYTECHNIC UNIVERSITY

A kind of carbon dioxide hydrogenation catalyst for producing light olefins and its preparation method and application

ActiveCN108620089BLow selectivityLow carbon olefin catalysts have high selectivityHydrocarbon from carbon oxidesCatalystsPtru catalystManganese
The invention discloses a catalyst for producing low-carbon olefins by hydrogenation of carbon dioxide, a preparation method and application thereof. The catalyst is Fe with manganese additives on the surface 3 o 4 Nano balls, the manganese additive loading in the catalyst is 5-20%wt. Catalyst provided by the invention has higher CO 2 Conversion rate and low-carbon olefin selectivity, the yield of low-carbon olefins generated by catalytic carbon dioxide hydrogenation is high, and the by-products CO and CH 4 low selectivity. The method for preparing and modifying the catalyst is cheap and simple, and the obtained catalyst has a uniform and controllable morphology and good stability, and has good industrial application prospects.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI

Composite catalyst, preparation method and application thereof, and method for preparing aromatic hydrocarbon from synthesis gas through one-step method

PendingCN114733560AIncrease the concentration of surface oxygen vacanciesHigh selectivityHydrocarbon from carbon oxidesMolecular sieve catalystsMolecular sievePtru catalyst
The invention relates to the technical field of aromatic hydrocarbon preparation, in particular to a composite catalyst, a preparation method and application thereof, and a method for preparing aromatic hydrocarbon from synthesis gas through a one-step method. The mass ratio of the metal oxide to the molecular sieve is (1-5): 1, the molecular formula of the metal oxide is MnxZnyCrzAl0. 1O4, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt and 0 lt; xlt; 1, 0lt; yt; Yt; 1.6, 1lt; zlt, zlt; (x + y) / z is equal to 0.3-1.5, and the molecular sieve is an HZSM-5 molecular sieve. When the composite catalyst provided by the invention is used for preparing aromatic hydrocarbon from synthesis gas by a one-step method, the CO conversion rate is greater than or equal to 19%, the aromatic hydrocarbon selectivity is greater than or equal to 75.8%, and the space-time yield of aromatic hydrocarbon is greater than or equal to 0.07 g / h.gcat; meanwhile, the composite catalyst provided by the invention has relatively high stability and long service life, and no obvious inactivation phenomenon exists when the composite catalyst stably runs for 100 hours.
Owner:CHNA ENERGY INVESTMENT CORP LTD +1

A preparation method of zn-sba-15 composite material and its application in the synthesis of structural phospholipids

The invention discloses a preparation method of a Zn-SBA-15 composite material, which uses SBA-15, soluble zinc salt and anhydrous organic solvent as raw materials, and loads metal zinc on the SBA-15 molecular sieve through an impregnation method. The composite material has larger specific surface area and stronger acidity. The invention also discloses the application of Zn-SBA-15 composite material in synthesizing structural phospholipids, using phospholipids and fatty acids as raw materials, under the catalysis of Zn-SBA-15, to obtain structural phospholipids rich in fatty acids with different carbon chain lengths. The preparation method of the catalyst involved in the invention has the advantages of low cost, high catalytic performance of the product, etc., and conforms to the development trend of green chemical industry. The modified phospholipid synthesis method involved in the present invention has the advantages of economy, environmental protection, and high efficiency, and can solve the disadvantages of the enzymatic method, such as expensive enzyme sources, difficult recycling, and unsuitable reaction conditions, and finally improve the preparation method of structural phospholipids.
Owner:DALIAN POLYTECHNIC UNIVERSITY

Rod-shaped nano nickel-containing metal solid solution catalyst and preparation method thereof

The invention provides a rod-like nanometer nickel containing metal solid solution catalyst and a preparation method thereof. The ingredient of the rod-like nanometer nickel containing metal solid solution catalyst is a nickel-magnesium solid solution formed by nickel and magnesium which are adulterated with each other, the size is 300-600nm, and the section width is 40-70nm. The preparation method of the rod-like nanometer nickel containing metal solid solution catalyst comprises the following steps: mixing nickel-magnesium metal salt with deionized water uniformly when the temperature ranges from room temperature to 70 DEG C, maintaining constant temperature for 5-10min, adding a surface active agent after stabilizing for a period of time, reacting for 20-30min, then adding an organic solvent, after drying, rinsing by using the organic solvent, and carrying out vacuum drying to obtain a rod-like nanometer nickel-magnesium solid solution catalyst precusor. The obtained precursor is roasted for 2-8h at 550-750 DEG C to obtain the rod-like nanometer nickel-magnesium solid solution catalyst which is uniform and stable in shape and good in dispersity. According to the catalyst provided by the invention, the dispersity is good, and the ingredient is controllable; the method is simple, the operation is easy, the shape of the catalyst is uniform, the stability performance is good, and the catalyst has excellent catalytic activity for reforming reaction of methane and carbon dioxide.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI

Isomerization process for fluorine-containing olefins

The present invention discloses an isomerization method for fluorine-containing olefins. According to the invention, in the presence of a catalyst, at least a part of a compound represented by a general formula (I) is converted into a compound represented by a general formula (II), and the composition of the catalyst is shown in the specification. The method provided by the invention has the advantages of high target product selectivity, high catalyst stability and long service life.
Owner:ZHEJIANG RES INST OF CHEM IND CO LTD +1

Catalyst for hydrogenation of dimethyl oxalate to ethylene glycol, preparation method and application thereof

The invention discloses a catalyst for hydrogenating dimethyl oxalate to prepare ethylene glycol. The catalyst is a hollow ring structure. The catalyst comprises the following components in parts by weight: 1-50 parts of active components; 0-50 parts of promoter metals 10 parts; 30-90 parts of carrier. The active component is at least one of copper, silver, nickel, cobalt, gold and iron; the carrier is SiO 2 , carbon nanotubes, activated carbon, graphene, mesoporous carbon, ZrO 2 、Al 2 o 3 , ZnO, SBA-15, HMS, ZSM-5, MCM-41 and at least one of MCM-48. The catalyst for the hydrogenation of dimethyl oxalate to ethylene glycol of the present invention has high activity, good stability and high selectivity, the conversion rate of dimethyl oxalate can be greater than 99.9%, and the selectivity of ethylene glycol is greater than 96%. There are few by-products, and the target product is easy to separate. After 1000 hours of single-tube long-term operation of the catalyst, the reaction is stable and there is no obvious deactivation phenomenon.
Owner:高化学(江苏)化工新材料有限责任公司

A preparing method of a Zn-SBA-15 composite material and application thereof in synthesis of structured phospholipids

A preparing method of a Zn-SBA-15 composite material is disclosed. SBA-15, a soluble zinc salt and an anhydrous organic solvent are adopted as raw materials. The metal zinc is loaded onto the SBA-15 molecular sieve through a soaking manner. The composite material prepared by the method has a high specific surface area and high acidity. The invention also discloses application of the Zn-SBA-15 composite material in synthesis of structured phospholipids. The structured phospholipids rich in fatty acids having different carbon chain lengths can be obtained from phospholipids and fatty acids undercatalysis of the Zn-SBA-15. The catalyst preparing method has a low cost, high product catalytic performance, and the like, and meets the trend of development of green chemical engineering. A modified phospholipid synthesis method in the invention is economical, environmentally friendly, efficient and the like, can overcome defects such as expensive enzyme sources, difficult recovery and narrow reaction conditions in enzyme methods, and finally improves a structured phospholipid preparing method.
Owner:DALIAN POLYTECHNIC UNIVERSITY

A kind of preparation method of naphthyl sulfonic acid modified sba-15 and its application in the synthesis of phospholipid rich in unsaturated fatty acid structure

The invention discloses a preparation method of naphthyl sulfonic acid group modified SBA-15, which uses SBA-15, naphthyl silane coupling agent and anhydrous organic solvent as raw materials to prepare SBA-15-Na; SBA‑15‑Na is sulfonated to obtain naphthylsulfonic acid group modified SBA‑15; the present invention also discloses the application of naphthylsulfonic acid group modified SBA‑15 in the synthesis of novel structural phospholipids, with phospholipids and unsaturated Fatty acid methyl ester or unsaturated fatty acid ethyl ester is used as raw material, and under the catalysis of naphthylsulfonic acid modified SBA-15, the n-3 type, n-6 type, n-7 type and n-9 type unsaturated fatty acids are obtained. Structural phospholipids of saturated fatty acids. The modified phospholipid prepared by the present invention expands the application scope of phospholipids in medicine and food, expands the application market of phospholipids; solves the disadvantages of high price and difficult recovery of lipase or phospholipase in the process of enzymatic production of structural phospholipids, and improves the structure Preparation method of phospholipids.
Owner:DALIAN POLYTECHNIC UNIVERSITY

Preparation method of iron loading SBA-15 and application thereof to synthesis of structural phospholipid

The invention discloses a preparation method of iron loading SBA-15. SBA-15, soluble ferric salt and an anhydrous organic solvent serve as raw materials, the metal iron is loaded on the SBA-15 mesoporous molecular sieve through a dipping method, and the modified SBA-15 prepared by adopting the method has a large specific surface area and high acidity. The invention further discloses application ofiron loading SBA-15 to synthesis of structural phospholipid. Phospholipid and fatty acid with different carbon chain lengths serve as raw materials, and structural phospholipid rich in medium-short carbon chain, n-3 type or n-6 type fatty acid is obtained through catalysis of modified SBA-15. The preparation method of the catalyst related to the invention is simple in technology and low in cost,and conforms to the development trend of green chemical engineering. The synthesis method of structural phospholipid related to the invention has the advantages of being economical, environmentally friendly and efficient, can overcome the problems that the enzyme sources are expensive, not prone to being recycled and are not universal in current enzyme method, and accordingly improves the preparation method of structural phospholipid.
Owner:DALIAN POLYTECHNIC UNIVERSITY
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