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JPH10502348A |
An improvement in a process for the haloalkylation of a first aromatic compound having at least one free ring position with a haloalkylating reagent and in the presence of a haloalkylation catalyst, said process producing a haloalkylated...
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JP2700551B2 |
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JP2694180B2 |
Cumene is prepared by alkylation of benzene with propylene, or by transalkylation of diisopropylbenzenes in the presence of benzene, on a silica and alumina gel catalyst which is amorphous to X-rays and has an SiO2/Al2O3 ratio of between...
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JP2688486B2 |
A process for the production of pseudocumene, mesitylene, xylenes and benzene by upgrading C9 aromatics or mixtures of C7-C9 aromatics is disclosed. The process is carried out under catalytic upgrading conditions using a catalyst which c...
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JPH09511504A |
This invention is a crystallization process for p-xylene recovery. A single temperature crystallization stage is used for producing p-xylene from a feed having an above equilibrium p-xylene concentration, such as from toluene disproporti...
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JP2663302B2 |
A process for the manufacture of alkylbenzenes wherein a feed of fresh and recycle benzene and fresh olefin are reacted in the presence of an alkylation catalyst in an alkylator having at least two reaction stages wherein each stage is a...
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JP2660079B2 |
A method for the highly selective production of 2,6-diethylnaphthalene involving the use of a specific Lewis acid catalyst and a highly regiospecific ethylating agent.
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JPH09509964A |
A process for the preparation of optically active cycloolefins based upon reaction of optically active dienes in the presence of catalyst compositions comprising molybdenum and tungsten complexes.
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JP2656641B2 |
The selective isopropylation of a naphthyl compound to diisopropylnaphthalene enhanced in the 2,6-diisopropylnaphthalene isomer is obtained in the presence of an acidic crystalline molecular sieve catalyst having twelve membered oxygen r...
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JP2656124B2 |
A process for preparing monoalkylated aromatic hydrocarbons which comprises: (a) contacting a stoichiometric excess of an aromatic hydrocarbon feed with a C2 to C4 olefin in an alkylation zone under at least partial liquid phase conditio...
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JPH09241018A |
To obtain a catalyst having improved catalytic performance, especially selectivity in the disproportionation reaction of alkyl arom. hydrocarbon and/or the trans-alkylation reaction of alkyl arom. hydrocarbon. This catalyst contains mazz...
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JPH09509091A |
The invention relates to a catalyst for the conversion of a hydrocarbon mixture which contains acyclic olefins and cyclic olefins or straight-chain terminal dienes by a metathesis reaction to prepare diene hydrocarbons, which catalyst is...
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JPH09508940A |
This invention relates to a process for the converting ethylene to a mixture of 1-olefins by (a) feeding ethylene through an oligomerization catalyst bed to form an oligomer predominating in C2-C6 olefins and (b) feeding the oligomer, op...
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JP2649068B2 |
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JPH09225315A |
To generate improved catalytic capacity, especially, selectivity in disproportionation reaction and/or transalkylation reaction of an alkyl aromatic hydrocarbon. This composite catalyst contains at least one mordenite structure type zeol...
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JPH09225313A |
To generate improved catalytic capacity, especially, selectivity in disproportionation reaction and/or transalkylation reaction of an alky aromatic hydrocarbon. This catalyst consists of at least one mazzite structure type zeolite prepar...
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JPH09225314A |
To generate improved catalytic capacity, especially, selectivity in disproportionation reaction and/or transalkylation reaction of an alkyl aromatic hydrocarbon. A catalyst contains at least one mazzite structure type zeolite, pref., zeo...
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JPH09225316A |
To generate improved catalytic capacity, especially, selectivity in disproportionation reaction and/or transalkylation reaction of an alkyl aromatic hydrocarbon. In a method for disproportionating and/or transalkylating a hydrocarbon in ...
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JP2641522B2 |
A process for effecting vapor-phase disproportionation of toluene employs a catalyst comprising a zeolite having a Constraint Index of 1 - 12, a silica/alumina mole ratio less than 55 and a diffusion rate constant of less than about 150 ...
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JP2638764B2 |
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JPH09187658A |
To provide a catalyst, which is suitable for allowing benzene to react with a ≥9C aromatic hydrocarbon compound to convert to toluene useful as a gasoline base material and an 8C aromatic hydrocarbon compound and has high activity, sma...
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JPH09155198A |
To obtain a highly active and highly selective catalyst almost free from a catalytic deterioration suited for converting to toluene and an aromatic hydrocarbon compound by causing one type of metal selected from among the group VIII and ...
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JP2613650B2 |
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JP2600084B2 |
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JPH09501407A |
PCT No. PCT/EP94/01937 Sec. 371 Date May 3, 1996 Sec. 102(e) Date May 3, 1996 PCT Filed Jun. 14, 1994 PCT Pub. No. WO94/29246 PCT Pub. Date Dec. 22, 1994The average degree of branching of a branched olefin feedstock is reduced by skeleta...
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JPH0940588A |
To obtain the subject compound in a high purity and in a high yield, capable of suppressing the generation of byproducts, diisopropylbiphenyl, etc., difficult to be separated with a distillation, etc., by isomerizing m- isopropylbiphenyl...
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JP2571200B2 |
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JPH08310976A |
To carry out the transalkylation of polyalkylbenzenes such as diethylbenzenes produced during the alkylation of an aromatic hydrocarbon with an olefin by using a catalyst showing modified transalkylation activity. A raw material comprisi...
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JPH08301794A |
To convert a 4C olefin fraction into polyisobutene and propylene. This method for conversion comprises successively performed three steps of (a) a selective hydrogenating step of a diolefin and an acetylene impurity in the presence of a ...
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JPH08301806A |
To carry out the subject conversion by optimizing the relative selectivity of ethylene-propylene with an olefinic fraction derived from a steam cracking operation, etc., and further regulating the relative ratio of ethylene and propylene...
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JP2550602B2 |
PURPOSE:To enhance the high-temp. resistance and activity of the title trans- alkylation catalyst by forming the catalyst contg. the modified saponite shown by a specified general formula and obtained by applying metal ion exchange to sa...
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JP2547966B2 |
PURPOSE: To provide a catalyst for converting a paraffin into aromatic compound, which catalyst is excellent in catalytic activity and stability, and to provide a reforming method using the same, which is excellent in reforming yields of...
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JP2545649B2 |
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JPH08509503A |
A process is provided for disproportionation of an alkylaromatic compound, alkyl being from 1 to about 6 carbon atoms, e.g., toluene and methylnaphthalene, comprising contacting said compound with catalyst comprising an active form of sy...
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JP2535321B2 |
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JPH08215565A |
PURPOSE: To obtain a catalyst suppressing the production of a by-product and having high efficiency at the time of synthesizing a useful substance from olefin. CONSTITUTION: This catalyst consists of a porous body of a crystalline oxide ...
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JP2526637B2 |
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JPH08206509A |
To obtain a catalytic composition which contains at least one compound of rhenium with aluminum and can be used in the metathesis of olefins in a homogeneous phase. This catalytic composition is represented by the general formula of O3 R...
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JPH08176022A |
PURPOSE: To provide a method for respectively producing 1,6-heptadiene or 1,6-octadiene from cyclopentene and ethylene or the cyclopentene and propylene by which the catalyst activity is sufficiently manifested and the conversion rate of...
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JP2511264B2 |
A method for producing efficiently a highly pure 1-(m-ethylphenyl)-1-phenylethane or m-ethylphenylphenylmethane which are used as the starting materials for preparing medicines and other organic compounds. The method comprises the step o...
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JP2500256B2 |
PURPOSE: To provide a compd. which is suitable for the preparation of zeolite SSZ-26. CONSTITUTION: This compd. is N,N,N',N'-tetramethyl [4,3,3,0] propellane8,11- diamine and its alkyl amonium cation, i.e., N,N,N',N'-hexamethyl [4,3,3,0]...
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JPH08119882A |
PURPOSE: To selectively obtain the product rich in benzene and p-xylene that contains no following impurities having close boiling points to that of toluene, in other words, from which the impurities can be readily separated by simple di...
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JPH08502955A |
The invention relates to a process for the conversion of an olefin or a mixture of olefins in a distillation column in which both a metathesis and an isomerization reaction occur. The invention is characterized in that in the top section...
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JPH0859522A |
PURPOSE: To obtain an olefin having either a functional group unsuitable for ionizing reaction or an extended carbon chain by readily substituting an olefinic compound utilizing free radical reaction without using a tin compound having s...
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JPH0817946B2 |
Normal paraffin hydrocarbons are isomerized to produce products containing non-normal hydrocarbons using a novel zeolite beta catalyst that has been activated in order to enhance its catalytic properties by treating at an activation temp...
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JPH0813976B2 |
This invention relates to a process for restructuring an olefinic feedstock rich in linear olefins into a product olefin of narrower composition which is richer in branched olefins than the starting feedstock. Such restructuring is achie...
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JPH0811739B2 |
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JPH07309787A |
PURPOSE: To metathesize an olefin advantageously in aspects of cost in a remarkably high conversion rate due to a low proportion of rhenium sufficiently employed by using a specific catalyst having the rhenium. CONSTITUTION: An olefin is...
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JPH07100670B2 |
Process for the disproportionation of toluene employing an aluminum deficient mordenite catalyst. A toluene containing feedstock is supplied to a reaction zone containing a mordenite catalyst having a silica/alumina mole ratio of at leas...
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JPH07509687A |
A method for synthesizing a zeolite bonded to a substrate utilizes a reaction mixture having a H2O/YO2 molar ratio of at least 25 and Y is a tetravalent element, particularly silicon. A structure made according to this method includes a ...
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