41results about How to "Adjustable acidity" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.