80results about How to "High acid density" patented technology

The invention relates to a catalyst for preparing light aromatic hydrocarbons and light paraffin hydrocarbons by using hydrocarbon raw materials, and the catalyst is mainly used for solving the technical problems that a binding agent in a bifunctional catalyst which is prepared by using a zeolite carrier containing the binding agent of the prior art can reduce the content of effective components, cause the decrease of the absorption capacity, reduce the effective surface area and further cause lower activity and poorer stability. The catalyst comprises the following components counted by the percentage by weight: a) 0.01 to 0.8 percent of at least one of Pt or Pd; b) and the rest of at least one of binding agent-free mordenite, Beta zeolite, Y zeolite, ZSM-5 or ZSM-11, thereby preparing the bifunctional catalyst; therefore, the technical proposal can better solve the problems and can be used in the industrial production for the preparation of the light aromatic hydrocarbons and the light paraffin hydrocarbons by using the hydrocarbon raw materials.

The invention relates to a method for producing lightweight arene and lightweight alkane by utilizing a hydrocarbon material, which mainly solves the technical problems that the hydrocarbon material needs a solvent for extraction in the prior separation process and has the complex process and high cost; and heavyweight arene and the separated non-arene have low utilization value. The method comprises the following technical proposal: in the presence of a zeolite catalyst containing Pt or Pd, the hydrocarbon material with a boiling point of between 30 and 250 DEG C is adopted; the heavyweight arene in the hydrocarbon material has transalkylation reaction with the lightweight arene by hydrodealkylation groups; the lightweight arene is subjected to isomerization reaction and transformed into a component abundantly containing BTX(B is benzene, T is toluene and X is xylene) lightweight arene; non-arene has hydrocracking reaction to generate lightweight alkane ; in a distillation tower, according to different boiling points, liquid phase products can be respectively separated into benzene, toluene, xylene and C9<+> arene; and the lightweight arene can be separated from gas phase products, thereby well solving the problems and being used in the industrial production of the lightweight arene.

The invention relates to a method for preparing light arene and light alkane by hydrocarbon raw materials, mainly solving the technical problems in the prior art that heavy arene and non-aromatic hydrocarbons have low utilization value and solvent extraction needs to be carried out for separating BTX (B is benzene, T is toluene and X is xylene) arene. Through taking reformate, cracked gasoline, a mixture containing C9<+> (C9 and more than C9) arene, naphtha and a mixture of the substances as raw materials and carrying out hydrogenation lightening treatment, the method ensures that heavy arene undergoes dealkylation reaction and transalkylation reaction and light arene undergoes isomerization reaction, and the like so as to be converted into a composition rich in BTX light arene; moreover, an adopted catalyst comprises at least one of Pt or Pd and at least one of mordenite, Beta-zeolite, Y zeolite, ZSM-5 zeolite or ZSM-11 zeolite, and the technical proposal solves the technical problems better, and can be used in the industrial production for arene.

The invention relates to a method for separating and producing 1,3,5-trimethylbenzene through hydrocracking heavy aromatic hydrocarbons to mainly solve technical problems of low added value of the heavy aromatic hydrocarbons, and complex flow, low product purity, low yield and the like in separation of 1,3,5-trimethylbenzene monomers from the heavy aromatic hydrocarbons. According to the method, hydrogen type binder-free ten-membered ring zeolite loading 0.005-0.5% by mass of Pt or Pd is adopted as a catalyst, hydrogen and the heavy aromatic hydrocarbons which are raw materials undergo hydrocracking treatment, and 1,2,4-trimethylbenzene and heavy aromatic hydrocarbons having boiling points greater than the boiling point of the 1,2,4-trimethylbenzene in products are returned to a reactor, so BTX aromatic hydrocarbon yield increase and 1,3,5-trimethylbenzene separation production are realized. The method well solves the problems, and can be used for the industrial production for yield increases of the BTX (benzene, toluene and xylol) aromatic hydrocarbon and the 1,3,5-trimethylbenzene.

The invention relates to a method for the increase production of BTX aromatic hydrocarbons and trimethylbenzene through hydrocracking heavy aromatic hydrocarbons to mainly solve technical problems of low heavy aromatic hydrocarbon added value and high cost for separating and producing trimethylbenzene monomers in the heavy aromatic hydrocarbons containing methylethylbenzene, propylbenzene and butylbenzene. The method comprises a step that the heavy aromatic hydrocarbons are subjected to a hydrocracking reaction through adopting Pt/Pd-loaded hydrogen type binder-free ten-membered ring zeolite as a catalyst under reaction conditions comprising that the reaction temperature is 320-450DEG C, the reaction pressure is 2.0-4.0Mpa, the hydrocarbons raw material weight hourly space velocity is 1.0-4.0h<-1> and the hydrogen/hydrocarbon raw material ratio by mole is 3-10:1. The method well solves the problems through above technical scheme, and can be applied to the industrial production of the BTX aromatic hydrocarbons and the trimethylbenzene.

The invention provides a novel method for producing propylene and ethylene through catalytic cracking of olefins, which comprises the steps of: taking C4-C12 olefins as raw materials; and performing acatalytic cracking reaction of the olefins on the raw materials through a catalyst bed to generate the propylene and the ethylene under the conditions that the reaction temperature is between 450 and650 DEG C, the reaction pressure is between 0 and 0.3MPa, the weight space velocity of the olefins is between 1 and 14 h<-1>, and the weight ratio of water to the olefins is 0.1-10, wherein a catalyst comprises a ZSM-5 molecular sieve, an adhesive and a phosphorus element supported on the catalyst, the silicon-aluminum molar ratio SiO2/Al2O3 of the ZSM-5 molecular sieve is 10-300, and the grain diameter of crystal grains of the ZSM-5 molecular sieve is between 10 and 800nm. The method has longer reaction operation time while maintaining the high yield of the propylene and the ethylene, and can be used for industrialized production.

The invention discloses a catalyst for olefin catalytic cracking to produce propylene and ethylene and an application method thereof. The catalyst comprises a ZSM-5 molecular sieve of which the silicon aluminum molar ratio of SiO2/Al2O3 is 10 to 300 and the crystal grain diameter is 10 to 800 nanometers, and rare earth and alkaline-earth metal elements loaded thereon. The catalyst is applied to a process for performing olefin catalytic cracking reaction through a catalyst bed to produce the propylene and the ethylene by using C4-C12 olefin as a raw material under the conditions of reaction temperature of 450 to 650 DEG C, reaction pressure of 0 to 0.3 MPa, the weight space velocity of hydrocarbon materials of 1 to 14 h and the weight ratio of water/hydrocarbon materials of 0.1 to 10. The catalyst provided by the invention can keep high propylene and ethylene yield, has longer reaction operation time at the same time, and can be used for industrialized production.

The invention provides a novel catalyst for olefin catalytic cracking to produce propylene and ethylene and a use method thereof. The catalyst comprises ZSM-5 molecular sieve in which the silicon aluminium mole ratio SiO2/Al2O3 is 10-300 and the grain size is 10-800nm, and phosphorus element and rare earth metal elements which are loaded on the molecular sieve; wherein, C4-C12 olefin is used as raw materials, the reaction temperature is 450-650 DEG C, the reaction pressure is 0-0.3Mpa, the weight hourly space velocity of olefin is 1-14h, the weight ratio of water to the olefin is 0.1-10; the raw materials are sent to catalyst bed to perform olefin catalytic cracking reaction to produce propylene and ethylene. By applying the catalyst provided by the invention, the high yield of propylene and ethylene can be maintained, while the reaction operating time can be longer, thus being applicable to the industrialized production.

The invention provides a method for preparing a xanthene amerantrone derivative via the catalysis of an acidic ionic liquid, and belongs to the technical field of organic chemosynthesis. The method comprises the following steps: performing a condensation reaction, wherein the molar ratio of aromatic aldehyde to a 1,3 hexanedione derivative is 1:2, the molar weight of an acidic ionic liquid catalyst accounts for 5% to 10% of the adopted aromatic aldehyde and the adding amount of absolute ethyl alcohol serving as a reaction solvent accounts for 70% to 90% of the total weight of materials; performing a reflux reaction for 2 to 5 hours under the action of one atmospheric pressure as the reaction pressure; after reacting, cooling by using ice water and filtering; and recrystallizing filter residues by using 95% of ethanol, thereby obtaining the pure xanthene amerantrone derivative. Compared with the traditional preparation method taking acid, alkali and other acidic ionic liquids as the catalysts, the method provided by the invention has the characteristics of being high in catalytic activity and less in catalyst adding amount, realizing catalyst recycling and the like.

The present invention provides a composite solid acid catalyst consisting of from 50%-80% by weight of a porous inorganic support, from 15% to 48% by weight of a heteropoly compound loaded thereon, and from 2% to 6% by weight of an inorganic acid. The present invention further provides a process for preparing said composite solid acid catalyst and a process for conducting an alkylation reaction by using such catalyst. The composite solid acid catalyst of the present invention has the acid sites type of Brönsted acid and has an acid sites density of not less than 1.4×10⁻³ mol H⁺/g. Moreover, said composite solid acid catalyst has the homogeneous acid strength distribution, and is a solid acid catalyst having excellent performances.

The invention discloses an EU-1 molecular sieve and a synthesis method thereof, wherein the crystal structure of the EU-1 molecular sieve is a typical EUO structure. The synthesis method comprises: mixing an inorganic alkali, an aluminum source, a silicon source, a templating agent and water, stirring to obtain a silicon-aluminum gel, and crystallizing for a certain time; and adding water, a second templating agent and alumina, uniformly stirring, and carrying out hydrothermal crystallization to obtain the EU-1 molecular sieve. According to the present invention, the EU-1 composite molecular sieve synthesized by the method is the low silica-alumina ratio zeolite, and has the high crystallinity; and with the synthesis method, the generation of the impurity crystal can be avoided, and the operation is simple and easy to perform.

A kind of hydrocarbon-oil desulfuration agent contains, on the catalyst-weight basis, 15-60% phosphorus-modified and rare-earth-contained Y type zeolite, 10-60% inorganic oxide, and 0-75% clay; and phosphorus-modified and rare-earth-contained Y type zeolite contains, in weight percent, 0.5-8% phosphorus in presence as P2O5 and 18-35% rare-earth in presence as RE2O3, Moreover, the proportion of silicon and aluminium in zeolite is lower than 6.

The invention provides a green method for catalytically synthesizing 2'-aminobenzothiazolyl-arylmethyl-2-naphthol, belonging to the field of organic chemical synthesis. The method comprises the following steps: carrying out synthetic reaction, wherein the aromatic aldehyde:2-aminobenzothiazole:beta-naphthol mol ratio is 1:1:1, the bissulfonate acidic ion liquid catalyst accounts for 5-8 mol% of the aromatic aldehyde, the reaction temperature is 80-95 DEG C, the reaction time is 3-10 minutes, and the volume (ml) of the reaction solvent water is 3-5 times of the molar weight (mmol) of the aromatic aldehyde; and after the reaction is finished, cooling to room temperature, carrying out vacuum filtration, recrystallizing the filter residue with 95% ethanol, and carrying out vacuum drying to obtain the 2'-aminobenzothiazolyl-arylmethyl-2-naphthol.Compared with other synthesis methods, the invention has the characteristics of high catalytic activity, low catalyst consumption, recyclable catalyst, low environmental pollution in the whole process, simple and convenient after-treatment and the like.

The invention discloses an environmentally-friendly synthesis method of bisphenol fluorine. The method comprises the following steps: adding phenol, 9-fluorenone, 3-thiohydracrylic acid and an immobilized ionic liquid catalyst into an ultrasonic reaction kettle at 150 to 400 w, and placing the reaction kettle into a water bath at 25 to 50 DEG C for reaction for 1 to 3 h; collecting the immobilizedionic liquid catalyst through a magnetic field, and washing and drying the collected immobilized ionic liquid catalyst for repeated use; washing the residual reaction liquid without the immobilized ionic liquid catalyst with boiled water to separate out crystals, performing suction filtration and vacuum drying on the crystals to obtain a bisphenol fluorine coarse product, and recrystalizing the bisphenol fluorine coarse product to obtain white bisphenol fluorine crystals. Compared with a conventional preparation catalyst of the bisphenol fluorine, the catalyst disclosed by the invention has the advantages of high reaction cavity and high selectivity; furthermore, reaction conditions are mild, and the reaction efficiency is high; and in addition, the quality of the bisphenol fluorine is obviously improved.

The invention discloses a quinoline derivative efficient catalytic synthesis method belonging to the technical field of organic synthesis. The molar ratio of an active alpha-methyl or methylene carbonyl compound and 2-amino acetophenone is 1: 1, the molar amount of a multi sulfonic acid r adical acidic ionic liquid catalyst is 7-10% of the use amount of the 2-amino acetophenone, the reaction solvent 75% ethanol aqueous solution volume (ml) is 3-5 times of the molar amount (mmol) of the 2-amino acetophenone, the reflux reaction time is 5-25min, a filter residue is obtained by cooling to room temperature after the reaction and filtering, and the obtained filter residue is dried under vacuum to obtain a pure quinoline derivative. Compared with a synthesis method using other acidic ionic liquid as a catalyst, the catalyst has high catalytic activity, less use amount and less loss quantity during the circulation use, and the whole synthetic process has the advantages of being simple, convenient, economic and the like, and is convenient for industrialized mass production.

The invention provides a method for catalytic esterification of a -SO3H-containing metal-organic framework compound, and belongs to the technical field of organic synthesis chemistry. In esterification reaction, a molar ratio of alcohol to acid is 1:(1-2); based on -SO3H, the molar weight of the -SO3H-containing metal-organic framework compound is 8 percent of the alcohol; the reaction temperature is 110DEG C, the reaction time is 30 to 60 minutes, and the reaction pressure is one atmosphere; after reaction, the temperature is reduced to room temperature; and after filtration, the obtained -SO3H-containing metal-organic framework compound catalyst is subjected to vacuum drying at 120DEG C to be recycled. Compared with the traditional reaction process using protonic acid, Lewis acid and acidic ionic liquid as a catalyst, the method has the advantages that the catalytic activity is high, the using amount of the catalyst is small, the catalyst is easily separated from a reaction system, the catalyst can be recycled and the like.

The invention discloses a synthetic method of Beta zeolite. The synthetic method of Beta zeolite comprises the following steps: firstly placing aluminium nitrate into a high temperature furnace, and roasting to prepare special aluminium oxide; mixing inorganic base, an aluminium source, a silicon source, a template and water, and stirring to obtain silica-alumina gel; adding the above prepared aluminium oxide into silica-alumina gel; and finally carrying out hydrothermal crystallization to obtain Beta zeolite. The Beta zeolite synthesized by the method is low aluminium-silicon ratio zeolite, and has high degree of crystallinity. By the synthetic method, generation of foreign crystals is effectively avoided. In addition, the synthetic method is simple to operate and feasible.

The invention provides an ionic liquid catalyst for C5/C6 alkane isomerization. The chemical structural formula of the catalyst is as shown in the specification, wherein R1 and R2 are respectively any one of C2-C9 straight chain alkyl; X1 and X2 are respectively any one of AlCl4<-> and Al2Cl7<->, or X1 and X2 are respectively any one of AlCl3Br<-> and Al2Cl6Br<->. When the ionic liquid catalyst provided by the invention is applied to isomerization reaction, a reaction system is of liquid-liquid phase, and the reaction is stable and easy to control. After the reaction is accomplished and a product is cooled to be the room temperature, the ionic liquid catalyst is coagulated to be solid again, and thus being conveniently separated from a liquid phase product.

The invention provides a method for improving acidity of an MCM-22 molecular sieve based catalyst. The method comprises the following specific steps of: processing a roasted Na-type MCM-22 molecular sieve for 5-180 hours at a temperature of 50 to 250 DEG C by 0.01-1.0 mol/L Al(NO3)3 solution; and washing and drying the obtained products and exchanging the obtained products with ammonium nitrate solution; and filtering the obtained products, washing the obtained products by deionized water, drying the obtained products, and then roasting the obtained products to obtain the H-type catalyst. According to the method, in the process of preparing the catalyst by modifying the MCM-22 molecular sieve by the Al(NO3)3 solution, the acid density and the acid strength of the molecular sieve can be effectively improved; and compared with those of the unprocessed MCM-22 molecular sieve based catalyst, the activity and the stability for catalyzing transformation of propylene and butane of the catalyst provided by the invention are obviously improved in the process of catalyzing alkylation reaction of benzene and liquefied gas.