3548 results about "Alkyl transfer" patented technology

Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to paraffins useful as liquid fuels. The process involves the conversion of water soluble oxygenated hydrocarbons to oxygenates, such as alcohols, furans, ketones, aldehydes, carboxylic acids, diols, triols, and/or other polyols, followed by the subsequent conversion of the oxygenates to paraffins by dehydration and alkylation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.

A process for preparing dimethylbenzene by aromatization of methanol relates to a process for preparing dimethylbenzene by conducting aromatization reaction in a methanol aromatization reactor with methanol and hydrocarbon as raw materials. The process uses a metal-modified molecular sieve composite material as catalyst and causes the mixture of methanol and one or a plurality of C1-C12 hydrocarbons to conduct aromatization reaction in the methanol aromatization reactor. By adjusting the ratio between methanol and hydrocarbons in the raw material, the process regulates and controls the coordination between aromatization and alkylation reaction and realizes the purposes of effectively improving the yield of the target product dimethylbenzene and prolonging the service cycle of catalyst.

There is provided a process for converting methanol and/or dimethyl ether to a product containing C2 to C4 olefins which comprises the step of contacting a feed which contains methanol and/or dimethyl ether with a catalyst comprising a porous crystalline material, said contacting step being conducted in the presence of an aromatic compound under conversion conditions including a temperature of 350 DEG C. to 480 DEG C. and a methanol partial pressure in excess of 10 psia (70 kPa), said porous crystalline material having a pore size greater than the critical diameter of the aromatic compound and the aromatic compound being capable of alkylation by the methanol and/or dimethyl ether under said conversion conditions.

The invention provides methods and apparatuses that allow a protein sample to undergo reduction, alkylation, and digestion in a continuous flow process carried out within a microfluidic device. Methods and apparatuses in accordance with the invention can be employed as part of an automated proteomics analysis carried out in an integrated proteomics system.

The instant invention is directed to a single, selectively N-alkylated compound and libraries of such compounds as set forth in Formula I. Furthermore, the instant invention is directed to methods of effecting analgesia, a decrease in the postprandial rise in the blood glucose levels of a mammal after ingestion of a carbohydrate load by said mammal, and treating microbial infections, utilizing such a single compound of Formula I in conjunction with a pharmaceutically-acceptable carrier. Also, the instant invention is directed to methods for selective alkylation, positional scanning and iterative synthetic and screening technologies.

The present invention relates to a novel synthetic route of a liquid chain hydrocarbon fuel totally independent of fossil energy based on a lignocellulose raw material to obtain a platform compound. The method includes three parts: 1) preparing oxygen-containing organic compounds with carbon chain length of 8-16 through the acid-catalyzed alkylation reaction by taking lignocelluloses-based carbonyl-containing platform compounds and furan platform compounds as raw materials on a novel solid catalyst; 2) effectively removing carbon-carbon double bonds and carbon-oxygen double bonds to prepare saturated oxygen-containing organic compounds by hydrogenation of the alkylated product; and 3) conducting hydrodeoxygenation for the hydrogenated alkylation product by using a metal-solid acid bifunctional catalyst to obtain the biomass aviation kerosene or high grade diesel fuel with the carbon chain length of 8-16 and having a high energy density and stability.

A process for regenerating a used acidic catalyst which has been deactivated by conjunct polymers by removing the conjunct polymers so as to increase the activity of the catalyst is disclosed. Methods for removing the conjunct polymers include hydrogenation, addition of a basic reagent and alkylation. The methods are applicable to all acidic catalysts and are described with reference to certain ionic liquid catalysts.

The invention discloses a process for producing low carbon olefin and arene parallel cogeneration gasoline by using methanol as a raw material. In the process, the methanol is used as the raw material and a molecular sieve catalyst is adopted to produce the low carbon olefin and arene parallel cogeneration gasoline by a methanol alkylation reaction and aromatization. In the process, the coal-based methanol is used as the raw material and can replace the conventional petroleum raw material to cogenerate a basis organic chemical raw material, and thus, the dependence degree of the conventional petrochemical industry on the petroleum can be reduced. Meanwhile, the process is also beneficial for reducing the foreign dependence degree of national petroleum, the strategic safety of energy and resources is improved, the production process of the process has low discharge, low pollution and low energy consumption, the requirements on green and environment protection are met, and the process has the advantages of low production cost and strong market competitiveness.

A process for the production of a high quality gasoline blending components from refinery process streams by the alkylation of light isoparaffins with olefins using an ionic liquid catalyst is disclosed. The process includes reacting a refinery stream containing isopentane and/or isobutane with a refinery stream containing ethylene and/or propylene and butylenes under alkylation conditions in the presence of a chloroaluminate ionic liquid catalyst comprising a hydrocarbyl substituted pyridinium halide or a hydrocarbyl substituted imidazolium halide of the general formulas A and B, respectively.

Where R=H, methyl, ethyl, propyl, butyl, pentyl or hexyl group and X is a halide and preferably a chloride, and R1 and R2=H, methyl, ethyl, propyl, butyl, pentyl or hexyl group and where R1 and R2 may or may not be the same.

This invention provides a method of producing an aromatics alkylation catalyst comprising the steps of: (a) synthesizing a layered oxide material MCM-56 in the presence of alkali and/or alkaline earth metal cations; (b) prior to any calcination of the MCM-56, subjecting the MCM-56 produced in step (a) to ammonium ion exchange so as to at least partially replace the alkaline or alkaline earth metal cations associated with the MCM-56 with ammonium ions; then (c) heating the ammonium-exchanged MCM-56 to decompose the ammonium cations and convert the MCM-56 into the hydrogen form; and (d) after step (b), forming the MCM-56 into catalyst particles. The resultant catalyst exhibits enhanced activity in the alkylation of benzene with ethylene and propylene.

An integrated refining process for the production of high quality gasoline blending components from low value components is disclosed. In addition there is disclosed a method of improving the operating efficiency of a refinery by reducing fuel gas production and simultaneously producing high quality gasoline blending components of low volatility. The processes involve the alkylation of a refinery stream containing pentane with ethylene using an ionic liquid catalyst.

The invention discloses a magnetic acrylic acid series strongly basic anion exchange microballoon resin and a preparation method thereof. The microballoon resin has the following structure: the resin skeleton is internally provided with magnetic particles, wherein A stands for a radical containing quaternary ammonium salt. The preparation method comprises the following steps: acrylic acid series substances serve as a monomer, the monomer is mixed with cross-linking agent and pore-forming agent to form oil phase; the oil phase is uniformly mixed with the magnetic particles and then suspension polymerization is carried out on the mixture; after going through amination and alkylation reaction, the polymerized magnetic polymer particles form the quaternary ammonium salt, namely the magnetic acrylic acid series strongly basic anion exchange microballoon resin. Exchange capacity of the resin is higher than any magnetic acrylic acid series strongly basic anion exchange microballoon resin ever found in existing literatures and reports and domestic market as well as foreign markets and can replace the traditional strongly basic anion exchange resin, thus being capable of being used for separating and removing soluble organisms in various water bodies, especially disinfection by-product precursor and multiple negative ions such as nitrate and phosphate.

New anionic surfactants and methods of preparation which are derived from aromatic or substituted aromatic molecules and alkenesulfonic acid. Wherein the aryl compound is alkylated and sulfonated in one-step with an alkene sulfonic acid prior to sulfonic acid neutralization. The methods allow the functional sulfonate group to be attached to the end of the alkyl chain rather than to the aromatic ring thus allowing for selective substituted groups, either branched, linear or alkoxylated or combinations thereof to be placed on the aryl compound prior to sulfonation and alkylation. The invention uses the alkene sulfonic acid produced from thin-film sulfonation of an alpha-olefin to alkylate benzene, mono-substituted aromatic, poly-substituted aromatic, alkylbenzene, alkoxylated benzene, polycyclic aromatic, mono-substituted polycyclic aromatic, poly-substituted polycyclic aromatic, naphthalene, alkylnaphthalene, phenol, alkylphenol, alkoxylated phenol, and alkoxylated alkylphenolalkyl substituted or polysubstituted cyclic or polycyclic compounds to produce the corresponding sulfonic acid having an additional alkyl group derived from the alpha-olefin used during the thin-film sulfonation which is either linear or branched.

The present invention relates to compositions and rigid porous structures that contain nanorods having carbides and/or oxycarbides and methods of making and using such compositions and such rigid porous structures. The compositions and rigid porous structures can be used either as catalysts and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided. The fluid phase catalytic reactions catalyzed include hydrogenation hydrodesulfuriaation, hydrodenitrogenation, hydrodemetallization, hydrodeoxygenation, hydrodearomatization, dehydrogenation, hydrogenolyis, isomerization, alkylation, dealkylation, oxidation and transalkylation.

The invention relates to a method for preparing a styrene catalyst through toluene-methanol side chain alkylation, which mainly solves the problem that in the prior art, a catalyst has a vulnerable catalyst structure and poor catalyst stability. Through the technical scheme that an alkali molecular carrier is loaded with elements selected from B, P and at least one of alkali metal and alkaline-earth metal to prepare the catalyst, wherein the carrier is exchanged into an H-type molecular sieve by ammonium salt before loading, roasted, exchanged by alkali metal salt, dried, roasted and dipped with the loaded elements, the method well solves the problem of poor stability and can be used for industrial preparation of the styrene catalyst through toluene-methanol side chain alkylation.

The invention relates to a new liquid chain hydrocarbon fuel synthetic route that acquires a platform chemical compound based on a lignocellulose raw material and is completely independent of fossil energy. The liquid fuel obtained by the method can be used as a substitute of aviation kerosene and diesel oil or as an additive for improving the cetane number and cold hardiness of fuels, thereby reducing the national dependence on imported petroleum in terms of liquid fuels. The method provided in the invention consists of two parts: 1) on a novel solid acid catalyst, an aldehyde group-containing compound (such as formaldehyde, acetaldehyde, propionaldehyde, and butyraldehyde, etc.) and a furan platform compound (such as furan, methyl furan, and hydroxylmethyl furan, etc.) undergo an acid catalyzed alkylation reaction to prepare an oxygen-containing organic compound with a carbon chain length of 8-16; and 2) hydrogenation and hydrodeoxygenation are conducted on an alkylation product to hydrogenate unsaturated bonds and remove the oxygen therein, thus preparing aviation kerosene or high grade diesel oil with a carbon chain length ranging from 8 to 16.

A hydrophobic solid, acid catalyst for the acid catalyzing reaction, such as esterifying reaction, alkylation reaction and hydration reaction, is prepared by attaching the inorganic metal salt to the high-hydrophobicity carrier. Its advantages are high catalyst activity and selectivity, high stability, and high hydrophobicity.

A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalyst have a surface to volume ratio of about 80 to less than 200 inch⁻¹.

A continuous alkylation process performed in an apparatus comprising a series of at least two zone A reactors and a series of at least two zone B reactors, in which the zone A reactors and the zone B reactors cycle between alkylation mode and mild regeneration mode, and wherein the alkylation mode comprises introducing an alkylation agent into a first reactor of the zone through which the alkylatable compound passes, reacting a portion of the alkylatable compound with a portion of the alkylation agent to produce a product stream, and performing this operation at least once more in a downstream reactor in the same zone employing, instead of alkylatable compound, a stream comprising the product stream.

A process and method for making a superior lubricant or distillate fuel component by the alkylation of C₅+ olefins with isoparaffins to produce a “capped” (alkylated) olefin using an acidic chloroaluminate ionic liquid catalyst system. Preferably the catalyst system includes a Brönsted acid.