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7601881 |
Isomerization catalyst and process
A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a tungstated...
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7569739 |
Aromatics alkylation
The present invention provides a process for producing an alkylaromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent under alkylation...
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7566429 |
Catalytic reactive separation system for energy-efficient production of cumene
The present invention relates to an atmospheric pressure, reactive separation column packed with a solid acid zeolite catalyst for producing cumene from the reaction of benzene with propylene. Use...
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7560608 |
Method of preparing a xylene product
A method of modifying a zeolite catalyst to increase para-xylene selectivity of the zeolite catalyst in toluene methylation reactions is provided. The method includes forming a slurry of a...
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7547810 |
Coated catalyst for aromatic alkylation
A catalyst useful for multi-phase reactors that includes an active component surrounded by a coating on a surface of the active component, wherein the coating provides a liquid film around the...
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7541505 |
Process for the production of phenyl alkanes operating in a moving bed
A process for the production of phenyl alkanes by catalytic alkylation on a solid acid catalyst employs at least one moving-bed reactor. This process comprises a catalytic alkylation stage of an...
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7525002 |
Gasoline production by olefin polymerization with aromatics alkylation
A process for the production of high octane number gasoline from light refinery olefins, typically from the catalytic cracking unit, and benzene-containing aromatic streams such as reformate. A...
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7525001 |
Process for preparation of 2,6-dialkyltetralin
The present invention provides a novel process for highly selective preparation of 2,6-dialkyltetralin, a key precursor for 2,6-dimethylnaphthalene (2,6-DMN), which does not require an extra step...
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7510644 |
Zeolites and molecular sieves and the use thereof
A method for making a zeolite includes providing a reaction mixture containing mixed inorganic oxides and an organic templating agent, heating the reaction mixture, removing the templating agent at...
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7498474 |
Vapor phase aromatics alkylation process
A process for the production of high octane number gasoline from light refinery olefins and benzene-containing aromatic streams such as reformate. The process achieves good utilization of both the...
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7495139 |
Use of modified zeolite catalysts in alkylation systems
Alkylation systems and methods are described herein and generally include contacting an alkyl aromatic hydrocarbon with a cerium promoted zeolite catalyst and then contacting the alkyl aromatic...
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7488861 |
Process for the co-production of cumene and secondary butyl benzene
Cumene and secondary butyl benzene are produced simultaneously in a distillation column reactor by feeding propylene, butylene and benzene to the reactor. Unreacted benzene is removed as overheads...
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7476774 |
Liquid phase aromatics alkylation process
A process for the production of high octane number gasoline from light refinery olefins and benzene-containing aromatic streams such as reformate. Light olefins including ethylene and propylene are...
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7453018 |
Process for aromatic alkylation
This invention relates to a process for the selective alkylation of toluene and/or benzene with an oxygen-containing alkylation agent. In particular, the process uses a selectivated molecular sieve...
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7449169 |
Microporous crystalline zeolite material (zeolite ITQ-22), synthesis method thereof and use of same as a catalyst
The present invention refers to a microporous crystalline material of zeolitic nature (ITQ-22) which, in the calcined state, has the empirical formula x(M1/nX02):yYO2:zR:wH20 wherein
M is...
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7439411 |
Zeolite catalyst for the alkylation of aromatic compounds with olefins, alcohols or polyalkylated aromatic compounds
The invention relates to a method of preparing an alkylated aromatic compound. The inventive method is characterized in that it comprises an alkylation reaction of an aromatic compound with an...
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7425659 |
Alkylaromatics production
A process for alkylation of an alkylatable aromatic compound to produce a monoalkylated aromatic compound, comprising the steps of: (a) providing at least one reaction zone having a water content...
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7420098 |
Dual zone aromatic alkylation process
A process for the catalytic alkylation of an aromatic substrate with an alkylating agent is disclosed that comprises contacting the aromatic substrate and the alkylating agent in sequential...
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7420095 |
Purification process of aromatics
Process for reduction of bromine index in aromatics, comprising the steps of feeding an aromatics feed stream which contains olefin impurities to a distillation column; withdrawing an overhead...
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7411101 |
Production of alkylaromatic compounds
A process for producing a monoalkylation aromatic product, such as ethylbenzene and cumene, utilizing an alkylation reactor zone and a transalkylation zone in series or a combined alkylation and...
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7405336 |
Promoters for controlling acidity and pore size of zeolite catalysts for use in alkylation
A metal-modified alkylation catalyst including a metalizeolite is provided where the metal is one or two selected from the group consisting of yttrium and a rare earth of the lanthanide series...
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7402717 |
Method for producing olefin-substituted aromatic or heteroaromatic compounds
Both low molecular weight and high molecular weight aromatic and heteroaromatic compounds which are substituted by olefins play an important role in industry, for instance as assistants and...
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7396969 |
Process for preparing short chain alkyl aromatic compounds
A process for producing alkyl aromatic compounds which comprises contacting at least one aromatic compound with at least one alkylating agent or transalkylating agent possessing at least one...
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7396967 |
Manufacture of xylenes using reformate
A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the...
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7390395 |
Hydrocarbon conversion using molecular sieve SSZ-56
The present invention relates to new crystalline molecular sieve SSZ-56 prepared using a N,N-diethyl-2-methyldecahydroquinolinium cation as a structure directing agent, methods for synthesizing...
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7385098 |
Aromatics alkylation process
The invention relates to a process for producing alkylated aromatics, preferably ethylbenzene, in a multiple bed reactor in which at least two catalysts, each comprising a molecular sieve, are used...
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7371911 |
Critical phase alkylation and transalkylation process in the presence of a beta zeolite
A process for the production of ethylbenzene by the ethylation of benzene in the critical phase in a reaction zone containing a molecular sieve aromatic alkylation catalyst comprising...
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7371910 |
Process for benzene alkylation and transalkylation of polyalkylated aromatics over improved zeolite beta catalyst
An aromatic alkylation process includes contacting an aromatic compound with an alkylating agent in the presence of a zeolite beta in a reaction zone under alkylation reaction conditions, wherein...
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7348465 |
Selective alkylation of aromatic hydrocarbons
A method for increasing selectivity of alkylation to monoalkylation comprising: providing a feedstream consisting essentially of alkylating agent and a stoichiometric excess of benzene, the...
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7321072 |
Process for producing paraxylene by methylating toluene with methanol at a low contacting time
A process for producing para-xylene by the selective methylation of toluene comprising contacting a reactant mixture comprising toluene, methanol and added water, with an oxide modified ZSM-5...
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7304194 |
Hydrothermal treatment of phosphorus-modified zeolite catalysts
A method of treating a ZSM-5-type zeolite catalyst is carried out by treating a ZSM-5 zeolite catalyst having a silica/alumina mole ratio of at least about 200 with a phosphorus compound. The...
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7297828 |
Process for the production of phenylalkanes that use a zeolitic catalyst that is based on silica-alumina
An alkylating process for the production of at least one of 2-, 3-, 4-, 5-, and 6-phenylalkanes by alkylation of an aromatic compound with a feedstock containing at least one olefin comprising at...
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7297827 |
Use of monolith catalyst to prepare ethylbenzene
Disclosed is an alkylation reactor for preparing ethylbenzene. The reactor comprises a monolith catalyst system that includes a monolith support impregnated or co-formed with a catalyst suitable to...
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7297826 |
Method for producing phenylalkanes using a combination of two catalysts
A process is described for producing phenylalkanes by alkylating at least one aromatic compound using at least one linear olefin containing 9 to 16 carbon atoms per molecule. The alkylation...
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7285696 |
Process for catalytic alkylation of monocyclic aromatic compounds and composition for use therein
A process for the catalytic alkylation of monocyclic aromatic compounds in a hydrocarbon process stream comprising contacting the monocyclic aromatic compound-containing hydrocarbon process stream...
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7282618 |
Method for the production of aryl alkenes
The present invention relates to a novel oxidative coupling arenes with olefins to yield aryl alkenes, which uses ruthenium (Ru) or Osmium (Os) compounds as catalysts.
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7279608 |
Toluene methylation process with increased methanol selectivity
A method of converting methanol to a xylene product is achieved by providing a reactor containing a non-steamed, phosphorus-treated ZSM-5-type zeolite catalyst. The catalyst is contacted with a...
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7276638 |
Multi-component molecular sieve catalyst compositions and their use in aromatics reactions
The invention relates to a process for producing alkylated aromatic hydrocarbons, preferably with an oxygen or sulfur containing alkylating agent, in the presence of a multi-component molecular...
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7268267 |
Alkylation process using UZM-8 zeolite
A process for the alkylation of aromatics with olefins using a solid catalyst bed containing UZM-8 zeolite is disclosed. A polyalkylated aromatic is passed to the catalyst bed to reduce the...
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7268264 |
Critical phase alkylation process
A process for the production of ethylbenzene by the ethylation of benzene in the critical phase over a molecular sieve aromatic alkylation catalyst. An aromatic feedstock having a benzene content...
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7259283 |
Alkylation and catalyst regenerative process
A process for the regeneration of a deactivated zeolite beta catalyst such as rare earth promoted zeolite beta catalyst deactivated in the course of an aromatic alkylation reaction. A zeolite beta...
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7249469 |
Method for separating a multicomponent stream
This invention relates to a method for separating a stream having benzene, toluene and alkyl benzene, said method comprising: feeding the stream into a first distillation column, wherein the stream...
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7244869 |
Method of aromatic alkylation
A catalyst for use in aromatic alkylation, such as toluene alkylation with methanol, is comprised of a zeolite with pore size from about 5.0 to about 7.0 Å containing a hydrogenating metal. The...
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7238843 |
Process for the production of alkylaromatics
A process for producing an alkylaromatic compound includes contacting a dilute olefin feed with a lean oil stream containing aromatic compound and alkylaromatic compound in an absorption zone to...
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7217850 |
Process for the production of phenylalkanes in the presence of a solid acid catalyst the deactivation of which is delayed
The invention relates to a process for the production of phenylalkanes comprising an alkylation reaction of at least one aromatic compound by at least one linear olefin having from 9 to 16 carbon...
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7205445 |
Method of continuous production of polyalkylbiphenyls
A method of continuously producing polyalkylbiphenyls involves reacting biphenyl and an olefin in the presence of a solid acid catalyst to obtain a reaction mixture containing monoalkylbiphenyls...
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7205376 |
Processes for the production of cumene, polyetherimides, and polycarbonates
A method for the manufacture of polycarbonate by combining methane and inlet water to produce methanol, converting the methanol to propylene, gasoline aromatics, and gasoline olefins, converting...
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7202390 |
Process for production of cumene
This invention related to an improved process for preparation of cumene. More particularly, the present invention relates to a process for the preparation of cumene using catalytic membrane...
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7196237 |
Method of preparing an alkyl aromatic product
A method of modifying a zeolite catalyst to increase selectivity of the catalyst is achieved by dissolving alumina in a phosphorus-containing acid solution, and treating the zeolite catalyst with...
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7189885 |
Staged process for producing linear 2-phenyl-alkanes
The process disclosed herein is a process for producing phenyl-alkanes by alkylation of an aryl compound with an olefinic compound and which uses a mordenite catalyst and a silica-alumina catalyst....
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