Matches 101 - 150 out of 692 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >
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6765120 Selective production of meta-diisopropylbenzene  
In a process for the selective production of meta-diisopropylbenzene, a C 9 + aromatic hydrocarbon feedstock containing meta- and ortho-diisopropylbenzene is contacted with benzene under conversion...
6753452 Removal of polar contaminants from aromatic feedstocks  
A process is described for removing polar compounds from an aromatic feedstock which contains polar compounds. The process comprises contacting the feedstock in an adsorption zone at a temperature...
6747182 Production of alkylated aromatic compounds using dealuminated catalysts  
A process for preparing alkyl substituted aromatic compounds by alkylating an aromatic compound with an alkylating agent in the presence of a porous crystalline zeolite in which the zeolite has...
6679986 Catalytic support with an oxide base from a metal belonging to the SVI group of the periodic table, its preparation and its uses  
A catalytic support includes a substantial quantity of at least one SVI group Periodic Table metal oxide in which is incorporated silica. The mass ratio between the quantity of SVI group metal...
6670517 Process for alkylating aromatics  
A process for alkylating aromatics is provided which comprises contacting an aromatic-containing feed with alkylating agent in the presence of a silica-bound ZSM-5 zeolite catalyst, wherein the...
6642426 Fluid-bed aromatics alkylation with staged injection of alkylating agents  
A system and process for producing xylene and other alkylated aromatics includes one or more fluidized bed reaction zones that provide contact between the reactants (i.e., an aromatic reactant and...
6616830 Hydrocarbon conversion using zeolite SSZ-57  
The present invention relates to a new crystalline zeolite SSZ-57 and processes employing SSZ-57 in a catalyst.
6617482 Removable of polar contaminants from aromatic feedstocks  
A process is described for removing polar compounds from an aromatic feedstock which contains polar compounds and which is then used in an alkylation process. The process comprises contacting the...
6555722 Countercurrent alkylation process  
A countercurrent process for the alkylation of aromatic materials with olefins which takes place in a multi-bed system. The aromatic material is in the liquid phase; the olefin in the gaseous...
6548722 Process for the preparation of substituted aromatic compound employing friedel-crafts reaction using a reusable basic anionic clay catalyst  
A process for Friedel-Crafts type liquid-phase alkylation or acylation of an aromatic compound using a hydrotalcite-type basic anionic clay catalyst represented by a formula: [(M 2− ) 1−x (M...
6547958 Hydrocarbon conversion using zeolite SSZ-59  
The present invention relates to new crystalline zeolite SSZ-59 and processes employing SSZ-59 as a catalyst.
6540906 Hydrocarbon conversion using zeolite SSZ-60  
The present invention relates to new crystalline zeolite SSZ-60 and processes employing SSZ-60 as a catalyst.
6540905 Hydrocarbon conversion using zeolite SSZ-58  
The present invention relates to new crystalline zeolite SSZ-58 and processes employing SSZ-58 as a catalyst.
6524551 Synthesis of MCM-58  
This invention provides a process for the synthesis of MCM-58 using 1-(1-adamantyl)pyridinium cations as a directing agent. The resultant MCM-58 is useful in a variety of hydrocarbon conversion...
6521804 Process for producing phenyl-alkanes using dual zones  
The present invention 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. This...
6512153 Process for the alkylation of aromatic compounds  
Process for the alkylation of aromatic compounds by the reaction of the aromatic compound of interest with isopropanol, alone or mixed with propylene, wherein the reaction is carried out in the...
6506953 Hydroalkylation of aromatic hydrocarbons  
There is described a process the hydroalkylation of an aromatic hydrocarbon, particularly benzene, to produce a cycloalkyl-substituted aromatic compound, particularly cyclohexylbenzene, comprising...
6504071 Process and apparatus for preparation of ethylbenzene by alkylation of benzene with dilute ethylene contained in dry gas by catalytic distillation  
A new process for the preparation of ethylbenzene by alkylation of benzene with dilute ethylene contained in dry gas by catalytic distillation and the apparatus used therefor are disclosed. The new...
6504072 Selective para-xylene production by toluene methylation  
There is provided a process for the selective production of para-xylene which comprises reacting toluene with methanol in the presence of a catalyst comprising a porous crystalline material having...
6500996 Process for BTX purification  
A process for the removal of hydrocarbon contaminants, such as dienes and olefins, from an aromatics reformate by contacting an aromatics reformate stream with a hydrotreating catalyst and/or a...
6489527 Process for improving purity of para-xylene product  
A process for producing 99.5+ wt. % para-xylene by selective alkylation has been discovered. A mixure of isomers of para-xylene having at least about 90.0 wt. % purity may be reacted with an...
6486372 Catalyst based on dealuminated mordenite containing at least one metal from groups VI, VII or VIII, and its use for dismutation and/or transalkylation of aromatic hydrocarbons  
A catalyst for transforming aromatic hydrocarbons, preferably for dismutation of toluene to produce benzene and xylenes and transalkylation of toluene and aromatic compounds containing at least 9...
6479721 Alkylation process operating at low olefin ratios  
A process for the alkylation of aromatics with olefins using a solid catalyst is disclosed, wherein the olefin ratio and/or the maximum olefin concentration in the alkylation catalyst, bed is...
6464857 Crystalline phosphorus-containing molecular sieves  
Molecular sieves comprising (1) phosphorus oxide; (2) a first oxide comprising an oxide of silicon, germanium or mixtures thereof; and (3) a second oxide comprising an oxide of aluminum, boron or...
6459006 Selective methylation to para-xylene using fuel syngas  
It has been discovered that para-xylene (PX) can be synthesized with improved selectivity by reacting an aromatic compound such as toluene and/or benzene with a reactant(s) from fuel syngas such as...
6429345 Process for production phenylalkanes using a catalyst based on a zeolite with structure type EUO  
The invention concerns a process for producing at least one compound selected from 2-, 3-, 4-, 5- and 6-phenylalkanes by alkylating benzene using at least one olefin containing at least 9 carbon...
6409986 Zeolite ITQ-5  
The present invention relates to zeolithic materials having a characteristic X ray diffraction pattern, and its preparation method, characterized by the relatively low pH of the synthesis medium...
6392047 Process for preparing biaryls in the presence of palladophosphacyclobutane catalysts  
Biaryls, e,g,. biphenyls, phenylpyridines, phenylfurans, phenylpyrroles, phenylthiophenes, bipyridines, pyridylfurans or pyridylpyrroles are prepared in high yields by coupling aromatics with an...
6388156 Direct selective synthesis of para-xylene by reacting an aromatic compound with a methylating agent formed from CO, Co2 and H2  
It has been discovered that para-xylene (PX) can be synthesized with improved selectivity by reacting an aromatic compound such as toluene and/or benzene with a reactant(s) such as a combination of...
6376729 Multi-phase alkylation process  
A process for the production of ethylbenzene by the gas phase alkylation of benzene over a molecular sieve aromatic alkylation catalyst followed by liquid phase alkylation of the product of the gas...
6376730 Attrition resistant zeolitic layered catalyst composition and aromatics alkylation process for using the composition  
A layered catalyst composition is disclosed where the composition is prepared by bonding an outer layer comprising a bound zeolite (e.g. zeolite beta) to an inner core material (e.g. cordierite)....
6368496 Decreasing bi-reactive contaminants  
Bromine reactive hydrocarbon contaminants are removed from aromatic streams by first providing an aromatic feedstream having a negligible diene level. The feedstream is contacted with an acid...
6355851 Cumene synthesis process using purified benzene and propylene feedstock streams  
A zeolite-catalyzed cumene synthesis process in which benzene and propylene feedstocks are pre-treated to remove catalyst poisons. The benzene feedstock is pre-treated under pressure by contact...
6339179 Production of alkyl aromatics by passing transalkylation effluent to alkylation zone and to product recovery zone  
A process for producing alkyl aromatics using a transalkylation reaction zone and an alkylation reaction zone is disclosed. One portion of the transalkylation reaction zone effluent passes to an...
6316675 Process for the preparation of an olefin-substituted aromatic or heteroaromatic compound  
A process for the synthesis of olefins having aromatic substituents is described in which olefins are reacted with aryl halides in the presence of catalysts consisting of palladium compounds and...
6303840 Alkylation reactions of aromatic subtrates  
A process for the alkylation of aromatic substrates under supercritical or near-critical reaction conditions is described. In particular, a method for performing Friedel-Crafts alkylation reactions...
6297417 Alkylation/transalkylation process with pretreatment of the alkylation/transalkylation feedstock  
A process of preparing an alkylated benzene or mixture of alkylated benzenes involving contacting a benzene feedstock with a solid acid, such as an acidic clay or acid zeolite, in a pretreatment...
6281399 Production of isopropyl aromatics by passing portions of transalkylation effluent to a multi-bed alkylation zone  
A process for producing isopropyl aromatics using a transalkylation reaction zone and an alkylation reaction zone is disclosed. Portions of the transalkylation reaction zone effluent pass to a...
6262325 Basic catalyst based on titanates, zirconates and hafnates  
The catalyst comprises at least one alkali metal on a support which has the general formula (I) A n ' Ti m ' Zr p ' Hf q ' O n '+2(m'+p'+q') (I) where A is a divalent metal, ...
6252126 Method for producing ethylbenzene  
An ethylbenzene production system comprises a reactor vessel, a vapor phase ethylene feed stream, a benzene feed stream entering the reactor vessel, and a product stream containing ethylbenzene...
6232515 Production of ethyl aromatics by passing portions of transalkylation effluent to a multi-bed alkylation zone  
A process for producing ethyl aromatics using a transalkylation reaction zone and an alkylation reaction zone is disclosed. Portions of the transalkylation reaction zone effluent pass to a multibed...
6222084 Gas phase alkylation-liquid phase transalkylation process  
Process for the production of ethylbenzene by alkylation over a silicalite alkylation catalyst with subsequent transalkylation of diethylbenzene with the alkylation catalyst and conditions selected...
6215035 Process for the preparation of aralkylated aromatic compounds using heterogeneous catalyst  
The invention relates to a process for the preparation of aralkylated aromatic compound with both small and large size aralkylating agents; wherein the catalyst used is heterogeneous solid catalyst...
6204423 Catalytic composition for the preparation of long-chain alkylaromatic compounds  
A description follows of a catalytic composition comprising a mixture of Y zeolite and pillared clay and a process which uses this catalytic composition for the alkylation of aromatic hydrocarbons...
6172274 Solid catalyst alkylation process using a wetting zone  
A solid catalyst alkylation process that wets catalyst particles with the alkylation substrate prior to introducing the catalyst particles to a liquid phase alkylation reactor is disclosed. A vapor...
6166281 Alkylation of benzene to form linear alkylbenzenes using fluorine-containing mordenites  
This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of linear alkylbenzene (LAB) by alkylation of benzene with an olefin. The paraffin may have...
6160190 Alkylation of aromatic compounds using a sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide  
Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and...
6156949 Selective pseudocumene production by xylene methylation  
There is provided a process for shape selective xylene methylation that involves contacting a feedstream which includes xylene and methanol under alkylation conditions, with a low activity...
6153806 Minimizing diphenylethane formation in alkylation of benzene by ethylene catalyzed by zeolite beta  
Reduction of the amount of 1,1-diphenylethane and heavier polyalkylated benzenes produced in the formation of ethylbenzene by alkylation of benzene with ethylene can be effected by reducing the...
6137020 Alkylation process with reduced heavy residue  
A process for reducing the amount of undesirable byproducts, for example multi-ring compounds known as heavy residue in a process for the alkylation of an aromatic hydrocarbon with an olefin using...
Matches 101 - 150 out of 692 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >