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41results about How to "Adjustable acidity" patented technology

Hydrocarbon catalytic cracking catalyst and preparation method thereof

A hydrocarbon catalytic cracking catalyst is characterized in that in terms of 100wt% of the catalyst, the catalyst comprises 30-80wt% of molecular sieve and 10-65wt% clay; the catalyst comprises 5.0-20.0wt% of P calculated in the form of P2O5, and 0-1.0wt% of La2O3; P in the catalyst is provided by aluminium phosphate sol; and the aluminium phosphate sol adopted by the catalyst comprises 2-10wt%of AI and 5-15wt% of P, wherein the pH of the aluminium phosphate sol is 1.0-2.5, and the aluminium phosphate sol comprises 2-20wt% of P calculated in the form of HNO3. The prepared hydrocarbon catalytic cracking catalyst has great strength and high activity, can be used as an auxiliary to be mixed with a main catalyst, hardly reduces the activity of the main catalyst, can improve product distribution, has excellent selectivity for dry gas and coke, and meanwhile can improve the yield of light oil.
Owner:PETROCHINA CO LTD

RFCC high octane gasoline additive and preparation method thereof

RFCC (Resid Fluid Catalytic Cracking) high octane gasoline additive contains the following ingredients by weight percentage taking the total weight of the additive as 100%: 5-90 of H-type (Hydrogen) composite molecular sieve, 1-60 of BETA or EU-1 molecular sieve, 1-30 of ZSM-5 molecular sieve adopting modified or non-modified chemical elements, 2-60 of clay, and 7.0-15.0 of P(calculated based on P205) wherein the precursor of the P is aluminum phosphate sol; and 2-10 of A1 and 5-15 of P are contained in the aluminum phosphate sol, and the PH value of the aluminum phosphate sol is 1.0 to 2.5; and 2-20 of the aluminum phosphate sol is calculated based on HNO3. By adopting the preparation method provided by the invention, the activity of the FCC additives is significantly enhanced; and owing to mixing use with main catalytic agent, the product distribution can be improved, the gasoline octane value is improved, and the gasoline productivity is improved at the same time.
Owner:PETROCHINA CO LTD

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

Technical method for preparing 2-ethyl-2-hexenal by catalyzing self-condensation of n-butyraldehyde with acidic ionic liquid

The invention relates to a technical method for preparing 2-ethyl-2-hexenal by catalyzing self-condensation of n-butyraldehyde with an acidic ionic liquid. The technical method comprises the following steps: adding the n-butyraldehyde and an acidic ionic liquid catalyst into a high-pressure autoclave, wherein the using amount of the acidic ionic liquid catalyst is 1-50 percent of the mass of the n-butyraldehyde; and magnetically stirring at 50-150 DEG C and reacting for 0.5-12h, wherein after self-condensation reaction of the n-butyraldehyde, the 2-ethyl-2-hexenal is obtained and the acidic ionic liquid catalyst is a Bronsted acidic ionic liquid or a Lewis acidic ionic liquid. The Bronsted acidic ionic liquid catalyst and the Lewis acidic ionic liquid catalyst are high in catalytic activity, good in selectivity, mild in reaction conditions and reusable; the conversion rate of the n-butyraldehyde is as high as 94.5%; the highest selectivity of the 2-ethyl-2-hexenal is 99.3%; and the acidic ionic liquid catalyst has higher catalytic performance than the traditional industrial liquid alkali catalyst and has a good prospect for industrial application.
Owner:HEBEI UNIV OF TECH

Preparation method for mesoporous carbon-based solid acid catalyst and application of mesoporous carbon-based solid acid catalyst

The invention relates to a preparation method for a mesoporous carbon-based solid acid catalyst and application of the mesoporous carbon-based solid acid catalyst. Under an acidic condition, saccharides or oligomerization phenolic aldehyde serving as a carbon source is dissolved through supercritical carbon dioxide serving as a solvent to perform pouring filling on a silicon dioxide template according to the special property of supercritical fluid; under inert atmosphere, the silicon dioxide template is carbonized at high temperature to obtain a carbon-silicon composite; a silicon dioxide casting is removed through a strong acid or strong alkaline solution; then the mesoporous carbon-based solid acid catalyst is obtained through acid modification. The mesoporous carbon-based solid acid catalyst prepared by the preparation method disclosed by the invention has a regularly ordered mesoporous duct structure with proper intensity, is larger in specific surface area and the pore volume and is higher in acid density. The catalyst is used for catalyzing the esterification acid reduction reaction of biological diesel raw materials; after the reaction, the oil acid value is reduced to be smaller than 2 mgKOH / g, and excellent solid acid catalysis performance is achieved.
Owner:TIANJIN UNIV

Nano-cluster assembled microporous-mesoporous composite molecular sieve and synthetic method thereof

A nano-cluster assembled microporous-mesoporous composite molecular sieve is characterized in that the mesoporous phase of the composite molecular sieve is a three-dimensional cubic structure KIT-6 molecular sieve, and the microporous phase of the composite molecular sieve is a ZSM-5 molecular sieve. A preparation method of the composite molecular sieve comprises the following steps: mixing materials according to a certain mole ratio, adding a surfactant, stirring, and cultivating at a crystallization temperature of 140-170DEG C for 1-16h to obtain ZSM-5 molecular sieve clusters; dissolving a mesoporous template triblock copolymer in deionized water, stirring in a constant-temperature water bath to form a transparent colloidal solution, and adding n-butanol to obtain a mesoporous template solution; and adding the ZSM-5 molecular sieve clusters to the mesoporous template solution, stirring to obtain a gel, carrying out static crystallization of the gel, and roasting at 550DEG C for 3-7h to obtain the ZSM-5 / KIT-6 composite molecular sieve. The composite molecular sieve has the pore advantage of a mesoporous material and also has the high acidity and high hydrothermal stability of the mesoporous molecular sieve; and the method is simple to operate and has good repeatability.
Owner:YANSHAN UNIV

Device and method for rainfall test of transmission line tower

The invention discloses a device and a method for a rainfall test of a transmission line tower. The device comprises a tower, wires, nozzles, a water supply device and a power supply device. The wires are fixed in the tower, and the nozzles are located above the wires and fixed right under the tower. The power supply device supplies power to the wires, the nozzles are connected with the water supply device, and the tower and the wires are sprayed with water to simulate various states in the rain. The water supply device comprises a water pump and a water tank. The method for the rainfall test includes nozzles required in the test are selected to be fixed right under the tower, the power supply device supplies power for the wires, the water tank and the water pump are used for providing water for the nozzles which spray water to the tower and the wires to simulate various states in the rain to perform the rainfall test. The rainfall test provided by device and the method is wide in voltage ranges, adjustable in rainfalls and adjustable in acidity of the rainfalls, and is applicable to transmission line towers with a voltage class of over 110 kV (kilovolt)..
Owner:ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1

Process for preparing 4,4'-diaminodiphenylmethane through condensation of acidic ionic liquid catalytic aniline and formaldehyde

The invention provides a process for preparing 4,4'-diaminodiphenylmethane (4,4-MDA) through condensation of acidic ionic liquid catalytic aniline and formaldehyde. The process includes the first step of adding aniline and acidic ionic liquid into a reactor provided with a backflow condensing device, dropwise adding a formalin solution into the reactor at 30-60 DEG C, stirring the mixture for 5-45 minutes, and then raising the temperature to 60-120 DEG C to react for 2-10 hours, wherein the raw material molar ratio is that aniline: formaldehyde=2-10: 1, and the catalyst mass ratio is that the acidic ionic liquid: the formaldehyde=0.5-10: 1, the second step of using water to extract reaction liquid, obtaining a water layer and an organic layer through separation, carrying out spin-steaming on the water layer, and recycling the ionic liquid for repeat use. The process is mild in reaction condition, high in catalyst activity and good in selectivity, and the prepared 4,4'-diaminodiphenylmethane can be repeatedly used.
Owner:HEBEI UNIV OF TECH

Granular medium-trace nutrient element fertilizer and production method thereof

PendingCN108503464ASolve the negative points that are difficult to applyAdjustable acidityCalcareous fertilisersMagnesium fertilisersResource utilizationGranular media
The invention relates to a granular medium-trace nutrient element fertilizer and a production method thereof. The granular medium-trace nutrient element fertilizer is prepared from the main materialsas follows: yellow phosphorus tailings, magnesium-containing substances, microelement raw materials and the like. The granular medium-trace nutrient element fertilizer is capable of supplying medium-trace nutrient elements required by crops, the proportion of each element can be adjusted, the particle strength is high, and the fertilizer suitable for mechanically applied and can be rapidly disintegrated after being applied to the soil, so that the fertilizer can be taken as the medium-trace nutrient element fertilizer to be directly applied and can be taken as a raw material of a blended fertilizer so as to supply the medium-trace nutrient elements to the blended fertilizer; the granular medium-trace nutrient element fertilizer is alkaline and has the functions of an acidy soil conditioner; and meanwhile, the production method is one of effective paths for resource utilization of a byproduct, namely yellow phosphorus tailings of a yellow phosphorus enterprise.
Owner:ZHENGZHOU UNIV

Method for preparing 2,6-dimethyl naphthalene by alkylation reaction of MgAPO-11 molecular sieve catalytic naphthalene

The invention discloses a method for preparing 2,6-dimethyl naphthalene by alkylation reaction of MgAPO-11 molecular sieve catalytic naphthalene. The method comprises the following steps of: I, activating an MgAPO-11 molecular sieve; and II, mixing naphthalene with an alkylation reagent and a solvent to prepare a feed solution, and carrying out alkylation reaction on the feed solution and the activated MgAPO-11 molecular sieve catalytic naphthalene to obtain the 2,6-dimethyl naphthalene. According to the method for preparing 2,6-dimethyl naphthalene by alkylation reaction of MgAPO-11 molecular sieve catalytic naphthalene, the used MgAPO-11 molecular sieve is synthesized by adopting a conventional electric heating method or a microwave heating method; the alkylation reaction of the MgAPO-11 molecular sieve catalytic naphthalene can be used for overcoming the defects that the homogeneous catalysts including anhydrous AlCl3 and the like are difficult to separate from the product, severe in device corrosion and severe in environment pollution, so that the reaction activity and 2,6-DMN (Dimethylnitrosamine) selectivity are higher, the 2,6- / 2,7-DMN ratio and anti-carbon deposition capacity are higher. Moreover, the reaction products and the catalysts are easy to separate. Besides, the method is simple to operate and convenient for large-scale production.
Owner:HEILONGJIANG UNIV

Food seasoning and production method thereof

InactiveCN102907648AAdjustable coldnessAdjustable acidityFood preparationHot peppersPreservative
The invention discloses a food seasoning. The food seasoning comprises the following raw materials in parts by weight as follows: 50-65 parts of galangal powder, 15-25 parts of tangerine peel powder, 2-8 parts of table salt, 2-7 parts of granulated sugar, 1-6 parts of licorice powder, 1-3 parts of hot pepper powder, 2-5 parts of cumin powder, 0.5-3.5 parts of starch, 0.5-3 parts of perilla nankinensis powder, 0.2-1.5 parts of preservatives, 0.5-1.5 parts of interferon inducing agent, and 0.5-1.5 parts of cell immunomodulator. A production method of the food seasoning comprises the following steps: A. preparing all the raw materials according to the proportion; B. cleaning galangal, tangerine peel, licorice, hot pepper, cumin and perilla nankinensis leaves, and peeling galangal; C. respectively slicing the raw materials obtained from the step B, and braking; D. respectively grinding the raw materials obtained from the step C; E. uniformly mixing table salt, granulated sugar, starch, preservatives, interferon inducing agent and the cell immunomodulator prepared in the step A with the raw materials obtained from the step C; F. disinfecting the raw materials obtained from the step E; and G. packaging. The food seasoning has good mouth feeling, can be used for adjusting the taste of fruits, and is complete and abundant in nutrition.
Owner:郭育琰

Efficient fuel sulfur removing agent and preparation method thereof

The invention discloses an efficient fuel sulfur removing agent and a preparation method thereof, and belongs to the field of energy conservation and environmental protection. According to the efficient fuel sulfur removing agent, octadecyl dimethyl (3-methoxysilyl propyl) ammonium chloride serves as a template agent, raw materials such as sodium hydroxide and sodium metasilicate are added, mixture is re-crystallized to obtain catalytic carriers of porous molecular sieves, the catalytic carriers have more adsorption sites, sulfur-containing compounds are adsorbed, so that sulfur removing and sulfur fixing functions of a catalyst on the sulfur-containing compounds are facilitated, sodium tungstate serves as a raw material, a strong oxide is formed and can oxidize sulfides, sufficient burning and sulfur removing of fuel is facilitated, a sulfur removing catalyst function body is formed, the sulfur removing agent has regeneration activity, the cost of the sulfur removing agent is reduced,the sulfur removing agent can be reused, carbide slag, blast furnace slag and limestone are added and compounded, sulfur is effectively fixed, decomposing of a sulfur fixing product is prevented, andsulfur fixing effects are facilitated. The sulfur removing agent solves the problem of poor sulfur removing and sulfur fixing effects of current fuel.
Owner:FOSHAN CHANCHENG DISTRICT NUOGAO ENVIRONMENTAL PROTECTION TECH CO LTD

A kind of method for preparing o-benzoylbenzoic acid by acylation reaction of benzene and phthalic anhydride

The invention discloses a technological method of preparing o-benzoylbenzoic acid by acylation reaction of benzene and phthalic anhydride. The method comprises the following steps: catalyzing acylation reaction of benzene and phthalic anhydride by adopting a chloroaluminate ionic liquid with high activity; and extracting a product from the ionic liquid catalyst by an extracting agent to separate the product from the catalyst. The ionic liquid catalyst used in the method disclosed by the invention can be efficiently and repeatedly used to avoid pressure of a conventional catalyst aluminum chloride anhydrous on three waste treatment, so that the requirements on green environmental protection is satisfied. The ionic liquid catalyst is adjustable in acidity, good in dissolving property, low in steam pressure and high in thermal stability and chemical stability, and can be repeatedly used. The method not only can overcome the defects that the post-treatment is tedious and the three waste treatment cost is high and the like after the conventional catalyst aluminum chloride anhydrous reacts, but also can overcome the defect that the catalyst aluminum chloride anhydrous cannot be repeatedly used.
Owner:HEBEI UNIV OF TECH

Composite molecular sieve and catalyst for hydroisomerization dewaxing reaction, preparation methods and applications thereof

The invention discloses a composite molecular sieve for hydroisomerization dewaxing reaction, and a preparation method of the composite molecular sieve. The invention also discloses a catalyst for hydroisomerization dewaxing reaction, and a preparation method of the catalyst. According to the catalyst for hydroisomerization dewaxing, a microporous ZSM-22 is taken as a core, a mesoporous molecularsieve MCM-48 is taken as a shell, a co-crystallization mode is adopted for compounding to form a composite molecular sieve with a core-shell structure, and Pt nanoparticles are loaded on the compositemolecular sieve by adopting a sol-gel method to obtain the catalyst. According to the invention, the catalyst for hydroisomerization dewaxing has high activity and selectivity, the condensation pointand cloud point of the produced lubricant base oil are significantly reduced, and the base oil yield is significantly improved.
Owner:PETROCHINA CO LTD

Waterproof construction method for garage top plate

The invention discloses a waterproof construction method for a garage top plate. The waterproof construction method mainly comprises the steps of base surface cleaning, epoxy glue construction, waterproof coating construction, edge sealing detection, and waterproof glue protective layer construction. Leakage prevention slurry comprises the following components, by weight, of 60-65 parts of polymer emulsion, 4-6 parts of dispersants, 8-10 parts of film forming auxiliaries, 3-5 parts of defoaming agents and 10-15 parts of sodium montmorillonite. A polyethylene polypropylene fiber composite waterproof coiled material is a novel waterproof coiled material formed by means of the methods that an anti-aging agent, a stabilizer, an auxiliary adhesive and the like are added into a native polyethylene synthetic polymeric material, and the native polyethylene synthetic polymeric material and a high-strength novel polypropylene fiber polyester filament yarn non-woven fabric are subjected to one-time composite through an automated production line. A layer of leakage prevention net slurry is scraped and smeared again on the polyethylene polypropylene fiber waterproof coiled material to form a double-layer waterproof coating layer, then combined with the waterproof performance of the polyethylene polypropylene fiber waterproof coiled material, the waterproof effect of the polyethylene polypropylene fiber waterproof coiled material is more obvious, and the problems of water seepage and the like on the garage top plate are perfectly solved.
Owner:郭春未

Liquid fuel and preparation method thereof

The invention discloses a liquid fuel, wherein the content of hanging tetrahydrotricyclopentadiene is greater than 95.0wt%, the freezing point is lower than minus 40 DEG C, and the density is 1.0 g / cm<3>. The invention further discloses a method for preparing the liquid fuel by isomerizing ionic liquid catalytic bridge type tetrahydrotricyclopentadiene.
Owner:TIANJIN UNIV

A kind of ferrierite molecular sieve and its preparation method and application

The invention provides a ferrierite molecular sieve, a preparation method thereof and an application. The preparation method includes the steps: mixing silicon sources, alkalinity conditioning agents, aluminum sources, template agents and water to form uniform sol; controlling the molar ratio of SiO2, Al2O3, R, Na2O to H2O to be 1.0:(0.005-0.10):(0.05-1.2):(0.03-0.50):(5.0-100.0), and enabling a pH (potential of hydrogen) value to be lower than 12.8; performing pre-crystallization, crystallization, drying and calcination to obtain molecular sieve raw powder; performing acid treatment on the obtained molecular sieve raw powder; mixing the molecular sieve raw powder, the template agents and the water or further mixing the molecular sieve raw powder, the template agents, the water and the silicon sources to form water solution; performing water-heat treatment, drying and calcination to obtain the ferrierite molecular sieve. R is the template agents. The prepared ferrierite molecular sieve is high in relative crystallinity and silica alumina ratio, large in specific surface area and crystal particle and adjustable in acidity and has excellent selectivity and stability when being applied to linear-chain olefin skeletal isomerization reaction.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Carbon-based organic and inorganic compound fertilizer, as well as production process and fertilizing method thereof

The invention relates to agricultural fertilizer, and particularly relates to carbon-based inorganic fertilizer, as well as a production process and fertilizing method thereof. The fertilizer is prepared from the following components in parts by weight: 20-40 parts of husks, 12-17 parts of ammonium phosphate, 20-25 parts of urea, 12-20 parts of lignite powder, 5-10 parts of boric acid, 15-25 partsof potassium chloride, 5-10 parts of zinc sulfate, 5-15 parts of bentonite and 5-15 parts of livestock and poultry excrement. According to the inorganic fertilizer, coked husks are adopted as the substrate, heavy metals in soil can be adsorbed and passivated by rich pores of the coked husks, the content of heavy metals in crops can be reduced, and crops with standard safety can be provided.
Owner:江西圣牛米业有限公司

Method for preparing 2,5-furandiformaldoxime

PendingCN114057674AAcidity can be adjustedAdjustable acidityOrganic chemistryFuranPtru catalyst
The invention discloses a method for preparing 2,5-furandiformaldoxime. The method at least comprises the step of subjecting raw materials containing 2,5-furandiformaldehyde and oxime compounds in the presence of a solid acid catalyst to obtain the 2,5-furandiformaldoxime. The method for continuously preparing 2,5-furandicarboxime through solid acid catalysis is short in reaction time, high in conversion rate and good in selectivity. The 2,5-furandiformaldoxime is continuously prepared, the safety of a reaction process is good, and the method is suitable for industrial continuous production.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

A device and method for adjusting the valence states of neptunium and plutonium in a hot chamber

The invention discloses a device for adjusting the valence states of neptunium and plutonium in a hot chamber. The device comprises an inner cylinder, a clamping sleeve, a sample introduction system, a material discharge system, an online sample analysis system, a seasoning bubbling system, and a liquid level measurement system. systems, temperature measurement systems, pressure measurement systems. The device provided by the invention is suitable for use in radioactive and highly corrosive places, and can directly measure the light absorption value of the sample in the hot chamber, and use the spectral absorption peaks of different substances to judge the ion valence state and other information in the material liquid.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY

A pressurized fluid extraction system and method for removing metal ions from carbon materials

The invention relates to a pressurized fluid extraction system and method for removing metal ions in carbon materials, which belongs to the technical field of new energy materials, and solves the problem that the existing removal method needs to use a large amount of acid-containing cleaning solution and the removal effect is poor when removing various metal ions The problem. The pressurized fluid extraction method of the present application includes: step 1, pre-oxidizing the carbon material raw material and cooling it to room temperature in a nitrogen atmosphere; step 2, mixing the pre-oxidized carbon material raw material with quartz sand to form a solid material, and loading the pressurized fluid In the extraction unit of the extraction system; step 3, heat the extraction unit to the working temperature, inject the eluent into the extraction unit for pressurized extraction operation; step 4, inject deionized water into the extraction unit under the same working conditions, and pass Nitrogen gas is added to remove the liquid, and finally a carbon material with trace metal ions removed is obtained. This application avoids the use of a large amount of acid-containing cleaning solution, reduces the number of repeated cleaning operations, and achieves the removal of various metal ion contents to a very low level.
Owner:INST OF CHEM CHINESE ACAD OF SCI

A kind of bad pepper and preparation method thereof

The invention discloses a bad pepper and a preparation method thereof, which is composed of the following raw materials in parts by weight: 60-80 parts of fresh pepper, 10-30 parts of pesto garlic, 10-20 parts of young ginger, 6-15 parts of table salt, 4.5-6 parts of lactic acid bacteria liquid, 0.5-2 parts of white wine, 0.5-0.9 parts of leek juice, 0.03-0.08 parts of citric acid, 0.01-0.03 parts of potassium sorbate, and 0.01-0.03 parts of sodium benzoate. Compared with the prior art, the invention has the advantages of short fermentation time, low nitrite content, higher Vc content preservation and better crispness, and can effectively increase the number of probiotics in the bad pepper, making the taste better and the like.
Owner:LIUPANSHUI MEIWEIYUAN FOOD CO LTD

A kind of sulfuric acid catalytic composite and its application in the production of alkylated gasoline

The invention belongs to the technical field of chemical catalysis and in particular relates to a sulfuric acid catalysis compound and application thereof to production of alkylation gasoline. The sulfuric acid catalysis compound is prepared by adding an amide material which is used as an additive into concentrated sulfuric acid, wherein the content of the additive in the sulfuric acid catalysis compound is 0.5wt% to 10wt%. According to the sulfuric acid catalysis compound, the amide material is used as the additive, so that the cost is low; a C8 component in an alkylation gasoline product is high in selectivity, so that a small quantity of by-products can be generated; a catalysis system can be recycled, so that the acid consumption is reduced; a reaction system is low in corrosion to equipment.
Owner:TSINGHUA UNIV

Catalyst for preparation of light olefins and aromatic hydrocarbons and preparation method and application thereof

The invention provides a catalyst for preparation of light olefins and aromatic hydrocarbons and a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: using HZSM-5 molecular sieve as a carrier, loading the carrier with an active component gallium, roasting and carrying out electrostatic self-assembly to prepare hollow fiber. The loaded gallium oxide accounts for 0.01-10 wt% of weight of the HZSM-5 molecular sieve. The catalyst of the invention has advantages of simple preparation process, high yield of light olefins and aromatic hydrocarbons and good low-temperature activity.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

A process for preparing 2-ethyl-2-hexenal through the self-condensation of n-butyraldehyde catalyzed by an acidic ionic liquid

The invention relates to a technical method for preparing 2-ethyl-2-hexenal by catalyzing self-condensation of n-butyraldehyde with an acidic ionic liquid. The technical method comprises the following steps: adding the n-butyraldehyde and an acidic ionic liquid catalyst into a high-pressure autoclave, wherein the using amount of the acidic ionic liquid catalyst is 1-50 percent of the mass of the n-butyraldehyde; and magnetically stirring at 50-150 DEG C and reacting for 0.5-12h, wherein after self-condensation reaction of the n-butyraldehyde, the 2-ethyl-2-hexenal is obtained and the acidic ionic liquid catalyst is a Bronsted acidic ionic liquid or a Lewis acidic ionic liquid. The Bronsted acidic ionic liquid catalyst and the Lewis acidic ionic liquid catalyst are high in catalytic activity, good in selectivity, mild in reaction conditions and reusable; the conversion rate of the n-butyraldehyde is as high as 94.5%; the highest selectivity of the 2-ethyl-2-hexenal is 99.3%; and the acidic ionic liquid catalyst has higher catalytic performance than the traditional industrial liquid alkali catalyst and has a good prospect for industrial application.
Owner:HEBEI UNIV OF TECH

Fruit vinegar production method

The invention relates to the field of biotechnology, and belongs to a fruit vinegar production method, which comprises: preparing a kiwifruit fruit vinegar, preparing a passiflora edulis sims fruit vinegar, preparing a jasmine flower liquid, and mixing and blending the obtained liquids according to a certain ratio to obtain the fruit vinegar finished product. According to the present invention, the production period of the fruit vinegar is shortened, the acidity of the fruit vinegar can be adjusted so as to achieve the taste suitable for the public, the fruit vinegar contains rich nutrients, and through the mixing blending of kiwifruit, passiflora edulis sims and jasmine flower, the fruit vinegar has the unique fragrance so as to stimulate people to drink.
Owner:陈锡禄
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