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5286368 |
Hydrocarbon conversion process using a novel beidellite clay
This invention relates to a hydrocarbon conversion process using a novel beidellite layered clay as the catalyst. The clay is characterized in that it is substantially free of sodium cations, is...
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5286367 |
Hydrocarbon conversion process using a gallium/germanium dioctahedral smectite clay
This invention relates to a hydrocarbon conversion process using a novel dioctahedral smectite layered clay as the catalyst. The clay is characterized in that the aluminum and silicon in the clay...
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5276231 |
Alkylaromatic process with removal of aromatic by-products
An improved process for the production of alkylated aromatic compounds by paraffin dehydrogenation and aromatic alkylation is disclosed. Aromatic by-products normally formed in paraffin...
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5268524 |
Preparation of linear alkyl aromatics
Essentially linear alkyl aromatics wherein the alkyl is attached to the aromatic ring at the β-position are produced by the process wherein a linear hydrocarbon selected from the group consisting...
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5268523 |
Selective sorption of dialkylated multinuclear aromatic compounds
The invention relates to a process for the separation cf various dialkyl multinuclear aromatic compounds from a feed stream of mixed isomers of those compounds. A shape selective adsorbent is...
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5262576 |
Method for the alkylation of organic aromatic compounds
A method and apparatus for conducting a catalytic distillation process is provided which allows for maintaining a liquid level in selected portions of the catalyst bed. Three particular processes...
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5258566 |
Process for preparing long chain alkylaromatic compounds
Long chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a long chain alkylating agent in the presence of catalyst comprising a synthetic porous MCM-36...
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5258565 |
Process for preparing short chain alkylaromatic compounds
Short chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a short chain alkylating agent in the presence of catalyst comprising a synthetic porous MCM-36...
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5254766 |
Process for producing alkyl-substituted aromatic hydrocarbon using heteropolyacid salts
A process for producing an alkyl-substituted aromatic hydrocarbon, which comprises alkylating an aromatic hydrocarbon with an alkylating agent in the presence of a heteropoly-acid or a salt thereof...
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5252197 |
Process for upgrading gasolines and other hydrocarbon mixtures
A process for upgrading gasolines and other hydrocarbon mixtures. The hydrocarbon mixture is contacted with a large pore zeolite catalyst in order to crack n-paraffins to form olefins and lower...
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5248841 |
Hydrocarbon conversion with ZSM-22 zeolite
Alkylated aromatic compounds, either alone or in a mixture with an alkylating agent, are disproportionated, alkylated or transalkylated in the presence of a ZSM-22 zeolite. The products of the...
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5243117 |
Catalyst and process for the selective production of para-dialkyl substituted benzenes
A silicon-modified non-organic zeolite catalyst and a process for the selective production of para-dialkyl substituted benzenes using the silicon-modified non-organic high alumina zeolite.
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5243116 |
Alkylation of aromatic compounds
Alkylated benzenes such as ethylbenzene and cumene are produced by alkylation and/or transalkylation in the presence of an acidic mordenite zeolite catalyst having a silica/alumina molar ratio of...
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5233111 |
Catalytic process for selective alkylation of aromatic hydrocarbons
A catalytic process for the selective alkylation of mono- and polycyclic aromatic hydrocarbons is described. The aromatic hydrocarbon is reacted with an alkylating agent in the presence of an acid...
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5233112 |
Catalytic conversion over specially synthesized crystalline porous chalcogenides
This invention relates to catalytic conversion of feedstock organic compounds to conversion product by contacting the feedstock at conversion conditions with catalyst comprising a new form of...
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5230790 |
Hydrocarbon conversion processes using modified zeolite Omega
Hydrocarbon conversion reactions are carried out over a catalyst composition containing forms of zeolite Omega synthesized by hydrothermal crystallization from reaction systems containing alkali...
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5230789 |
Hydrocarbon conversion process using an amorphous silica/alumina/phosphate composition
This invention relates to hydrocarbon conversion processes using a catalytic composite which is an amorphous solid solution of phosphorus, silicon and aluminum oxides. The composite is...
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5227555 |
Production of gasoline from light hydrocarbons
A process for the production of gasoline from a light hydrocarbon feed. The feed is catalytically aromatized to produce an effluent containing aromatics and olefins with the aromatics and olefins...
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5210356 |
Toluene disproportionation employing modified omega zeolite catalyst
The present invention relates to a stable, highly active and selective modified omega zeolite, and its preparation and use in toluene disproportionation.
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5210350 |
Method of preparing an alkylated aromatic product with an alkylation zeolite and a dealkylation zeolite
A method of preparing an alkylated aromatic product (12) by alkylation of an aromatic compound (1), the alkylation producing several alkylated aromatic products, this method being characterized by...
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5210348 |
Process to remove benzene from refinery streams
A substantially benzene-free product suitable for gasoline blending is formed from a benzene-containing refinery stream. At least about 30% of the benzene initially present in the stream is...
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5210351 |
Preparation of alkylated cyclopentadienes
Cyclopentadienes are alkylated by initially reacting primary or secondary alcohols at elevated temperatures in the presence of an alkali metal hydroxide with removal of water to form dimers of said...
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5207892 |
Hydrocarbon conversion process employing a modified form of zeolite Y
Novel catalyst compositions comprising a metal hydrogenation component and a modified form of zeolite Y are found to be highly effective in the hydrocarbon conversion processes carried out in the...
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5202516 |
Process of recovering monoalkylbenzene and pure 1,3,5-trialkylbenzene from a mixture of dialkyl- and trialkylbenzenes
A process of recovering monoalkylbenzene and pure 1,3,5-trialkylbenzene from an isomeric mixture containing dialkyl- and trialkylbenzenes. The process comprises transalkylating a monocyclic...
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5198594 |
Alkylation of alkylaromatics promoted by sonicated alkali metal
An improved process for alkylating an alkylaromatic having at least one benzylic hydrogen atom with an olefinic compound comprising contacting the alkylaromatic under liquid phase conditions with...
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5196623 |
Aromatic alkylation process employing zeolite omega catalyst
A process is provided for the alkylation of aromatic substrates with a C 2 -C 4 alkylating agent over an alkylation catalyst comprising zeolite omega at moderate temperature and pressure...
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5191134 |
Aromatics alkylation process
Long chain alkyl substituted aromatic compounds, particularly alkylated naphthalenes are produced by the alkylation of aromatics, e.g. naphthalene, with an olefin or other alkylating agent...
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5191137 |
Molecular sieves coated with non-oxide ceramics for toluene disproportionation
There is provided a molecular sieve coated with a non-oxide ceramic. The molecular sieve may be a zeolite, such as ZSM-5, and the ceramic coating may be, e.g., boron nitride. The coated molecular...
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5191135 |
Aromatics alkylation process
Long chain alkyl substituted aromatic compounds, particularly alkylated naphthalenes, are produced by the alkylation of aromatics, e.g. naphthalene, with an olefin or other alkylating agent...
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5185486 |
Method of reducing the benzene content of gasolines
The benzene content of hydrocarbon gasolines is accomplished by (a) fractionating at least one hydrocarbon gasoline into a light fraction A, with an increased benzene content, and a heavy fraction...
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5177285 |
Process for wet aromatic alkylation and dry aromatic transalkylation
A process for the production of alkylaromatic hydrocarbons uses a high water content in an alkylation zone and a low water content in a transalkylation zone to improve yields improve process yields...
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5177280 |
Process for producing alkylbenzenes using a catalyst based on a dealuminized Y zeolite and a catalyst based on a dealuminized mordenite
The invention relates to a process for producing an alkylbenzene from benzene and an aliphatic mono-olefin in the presence of a catalyst based on a dealuminized Y zeolite with a molar ratio SiO 2 ...
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5177284 |
Catalysts/process to synthesize alkylated naphthalene synthetic fluids with increased alpha/beta isomers for improving product qualities
This application discloses critical parameters, including process conditions and catalysts which effect the alpha:beta ratio of alkylated naphthalene isomers. The use of low alkylation temperatures...
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5176817 |
Hydrocarbon conversion process employing a substituted aluminosilicate compositions
This invention relates to molecular sieve compositions and processes for using the molecular sieves. The molecular sieves have a three-dimensional microporous crystalline framework structure of...
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5171904 |
Synthetic lubricant base stocks having an improved pour point
Synthetic lubricant base stocks having a low pour point are disclosed. These synthetic lubricant base stocks comprise a mixture of (1) oligomers prepared from a linear olefin having from 10 to 24...
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5171916 |
Light cycle oil conversion
Alkylated aromatic functional fluids are prepared by alkylating a light cycle oil with an alkylating agent, such as an alpha C 14 -olefin or coker gas oil, over a crystalline metallosiicate...
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5171915 |
Alkylaromatic lubricants from alpha-olefin dimer
It is disclosed that aromatic compounds can be alkylated with mono-olefinic HVI-PAO dimer in contact with an acidic catalyst to produce novel alkylated aromatic compositions. It has been found that...
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5160032 |
Hydrocarbon conversion process using alumina clay compositions
This invention relates to hydrocarbon conversion process using a catalyst consisting essentially of a layered clay homogeneously dispersed in an inorganic oxide matrix. The clay is dispersed in...
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5160500 |
Zeolite synthesis using an alcohol or like molecules
There is provided a method for preparing a zeolite other than ZSM-5 from a reaction mixture comprising a mixed organic directing agent which is a combination of (a) an organic nitrogen containing...
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5157180 |
Alkylation and transalkylation processes
A process for producing an alkylated organic compound via alkylation and/or transalkylation in which an organic feedstock is contacted with an organic reactant in the presence of a catalyst under...
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5157186 |
Process for catalytic coupling of an alkene with an aromatic hydrocarbon
A process of using a catalyst composition having enhanced effectiveness in coupling an alkene with an aromatic hydrocarbon having an active hydrogen on a saturated α-carbon is accomplished with a...
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5157185 |
Alkylation of aromatics
Alkylation of aromatics, e.g. ethylbenzene preparation, with minimized o-xylene make by contacting with olefin alkylating agent in the presence of ZSM-5 crystals having a diffusion rate constant of...
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5157158 |
Alkylation of aromatic hydrocarbons
A process is described for the alkylation of benzene (in general, aromatic hydrocarbons), with C 2 -C 20 monoolefins in the presence of an aluminum-magnesium silicate catalyst, to give linear...
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5149894 |
Alkylation using zeolite SSZ-25
A process for the alkylation of an aromatic hydrocarbon which comprises contacting the aromatic hydrocarbon with a C 2 to C 4 olefin alkylating agent under at least partial liquid phase...
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5146026 |
Alkylation of aromatic hydrocarbons in fixed bed catalytic process
A process is described for the alkylation of benzene (in general, aromatic hydrocarbons), with C 2 -C 20 monoolefins in the presence of an aluminum-magnesium silicate catalyst, to give linear...
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5144095 |
Substituted cyclopentadienes, methods of manufacture and uses
Tertiary alkyl substituted cyclopentadienes are prepared by reaction of cyclopentadiene with a stoichiometric excess of a tertiary alkyl halide under phase transfer conditions. The tertiary-alkyl...
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5138113 |
Process for producing alkylaromatic hydrocarbons from natural gas
The invention relates to a process for producing alkylaromatic hydrocarbons from natural gas containing methane, characterized in that it comprises the following three successive stages: 1)...
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5135642 |
Hydrocarbon conversion processes using novel crystalline silicon enhanced aluminas
This invention relates to novel silicon enhanced aluminas (SEAL), processes to prepare them, and hydrocarbon conversion processes using the SEALs. The SEAL compositions have a bulk empirical...
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5132477 |
Process for producing alkylaromatic lubricant fluids
The thermal and oxidative stability of HVI-PAO olefin oligomers is improved by reaction of the oligomerization mixture containing the olefin oligomer, dimer and isomerized but unoligomerized olefin...
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5120425 |
Use of zeolite SSZ-33 in hydrocarbon conversion processes
A crystalline zeolite SSZ-33 is prepared using a quaternary ion as a template wherein said zeolite is used in hydrocarbon conversion processes.
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