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JPH11292801A |
To provide an industrially advantageous method for efficiently producing a high-purity tetra-nuclearly substituted alkylbenzene useful as a raw material, etc., for pyromellitic acid or pyromellitic anhydride by using a raw material oil c...
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JPH11286459A |
To obtain the subject compound in high yield by subjecting butenes to the mutual reaction over a metathesis catalyst including a metal compound in the transition group in the element periodic table. In the presence of a metathesis cataly...
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JPH11267511A |
To provide a beta-type zeolite-based catalyst having higher stability and longer catalytic life than conventional ones in the case the catalyst is used for alkylation and trans-alkylation of aromatic compounds. This surface-modified beta...
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JPH11263983A |
To provide a method having resistance to poisoning of catalysts in the case of producing a light olefin, especially propylene by subjecting an olefin raw material containing impurities to catalytic cracking. This method for producing a l...
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JPH11217340A |
To provide a method for producing propene from a mixture comprising 1-butene, 2-butene and isobutene by which the propene can be obtained from a 4C hydrocarbon stream having a small 1-butene content and further the isobutene can be conve...
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JP2929393B2 |
PURPOSE:To effectively utilize the energy contained in toluene vapor by disposing two condensers at the top of a toluene tower and employing the condensers as a reboiler of a benzene tower and as a waste heat-recovering device, respectiv...
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JP2924911B2 |
A catalyst comprising a novel zeolite NU-87, is useful in a wide variety of hydrocarbon conversion reactions including isomerisation, transalkylation and alkylation.
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JP2920841B2 |
A process for the preparation of propylene from C4 or higher feed by a combination of cracking and metathesis wherein higher hydrocarbon is cracked to form ethylene and propylene and at least a portion of the ethylene is metathesized to ...
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JPH11507954A |
The preparation of mid- to near mid-chain branched ~a olefins is effected by: (a) preparing a mixture of carbon monoxide and hydrogen; (b) reacting this mixture in the presence of a catalyst under Fischer-Tropsch conditions to prepare a ...
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JPH11158087A |
To produce the subject compound useful as a precursor of naphthalen- edicarboxylic acid used for producing a polyester resin in high yield by reacting naphthalene with an alkylating agent in the presence of a catalyst. A transalkylating ...
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JP2905488B2 |
Composition suitable as catalyst system for the disproportionation of olefins, containing molybdenum oxide supported on alumina, which composition can be obtained by comulling of at least a gamma-alumina providing agent with a sulphur co...
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JP2904521B2 |
There is provided a dental tool for use with a reciprocating drive means and a sleeve member operatively connected to the drive means for reciprocating motion and designed to retain a dental tool, the dental tool comprising a shank porti...
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JP2898389B2 |
A process for the preparation of ethylene from C4 or higher feed by a combination of cracking and metathesis wherein higher hydrocarbon is cracked to form ethylene and propylene and at least a portion of the propylene is metathesized to ...
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JPH11139998A |
To provide a method for producing a dialkylnaphthalene from a petroleum-based raw material existing in a large amount. This method for producing a dialkylnaphthalene comprises (1) a process for catalytically hydrogenating and dealkylatin...
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JP2894382B2 |
Alpha-olefin is prepared from internal and/or vinylidene olefin by reacting the internal and/or vinylidene olefin with ethylene in the presence of a catalyst consisting essentially of Be2O7 and B2O3 on Al2O3.
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JP2882542B2 |
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JPH1171305A |
To provide a method for producing ethylbenzene under conditions for simultaneously attaining a low molar ratio of benzene ring/ethyl group in an alkylation reaction process and a low weight ratio of benzene/ polyethylbenzene in a transal...
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JP2851276B2 |
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JP2844126B2 |
Process for the production of phenol in which: … … 1) benzene is reacted with propene and isopropyl alcohol in contact with a catalyst based on a dealuminated Y zeolite with a SiO2/Al2O3 molar ratio of between 8 and 70, and the prod...
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JPH10338768A |
To provide an inexpensive method for recycling an expanded polystyrene by utilizing a specific fraction of a petroleum hydrocarbon having powers for both dissolving and precipitating the expanded polystyrene. This inexpensive method for ...
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JP2829425B2 |
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JP2819806B2 |
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JPH10511302A |
PCT No. PCT/DE95/01846 Sec. 371 Date Jun. 20, 1997 Sec. 102(e) Date Jun. 20, 1997 PCT Filed Dec. 19, 1995 PCT Pub. No. WO96/19287 PCT Pub. Date Jun. 27, 1996Rhenium oxide catalysts carried on aluminium silicates, if required with added b...
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JP2817382B2 |
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JP2810783B2 |
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JP2808174B2 |
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JP2805107B2 |
PURPOSE:To produce the title substance in good yield by isomerizing a mixed alkylnaphthalene, enhancing the concentration of a 1,5-dialkyl(R<1>)-3,7-dralkyl(R<2>) naphthalene and dealkylating the groups (R<2>) of the resultant compound. ...
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JP2805091B2 |
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JP2799890B2 |
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JP2801775B2 |
A feedstock containing one or more C9+ aromatic compounds, and optionally toluene, is converted over a catalyst comprising a zeolite possessing a Constraint Index of 1 to 3 to provide a product which contains substantial amounts of benze...
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JP2790916B2 |
A methylnaphthalene such as 2-methylnaphthalene undergoes catalytic disproportionation to naphthalene and a mixture of dimethylnaphthalene isomers, preferably containing substantial quantities of 2,6-dimethylnaphthalene, employing cataly...
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JP2791328B2 |
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JPH10508300A |
(57) [Summary] The production of ethylbenzene from diluted ethylene and diluted benzene is accomplished in three steps. First, the benzene-containing benzene feedstock stream is alkylated with an ethylene-containing diluted ethylene feed...
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JP2782363B2 |
A method for preparing alpha -(4-isobutylphenyl)propionic acid or its precursor is here disclosed which comprises the following steps (I), (II) and (III): step (I): subjecting isobutylbenzene and a polyalkylbenzene to disproportionation ...
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JPH10182506A |
To obtain propene and 1-butene useful for producing a fuel oil having a high octane value efficiently and in high yield by reacting 2-pentene with ethene in the presence of a specific metathesis catalyst. 2-Pentene is reacted with ethene...
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JP2772422B2 |
-A catalyst of the aluminosilicate type and its use in isomerisation of an aromatic C8 cut are described. -The catalyst is characterised by the following composition, expressed by weight: a) 0.01 to 1.5% of at least one metal chosen ...
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JP2767997B2 |
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JP2767994B2 |
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JP2767993B2 |
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JPH10167996A |
To provide an industrially advantageous production method, capable of obtaining xylenes, especially xylene mixture having high p xylene concentration in high toluene conversion by disproportionation reaction of toluene. A baked material ...
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JPH10158201A |
To provide a method capable of efficiently producing a polyalkylbenzene under highly catalytic activity in a method for producing the polyalkylbenzene by alkylating benzene or toluene by transalkylation between benzene or toluene and a p...
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JP2753650B2 |
Process for the production of an alkylbenzene from benzene and from an aliphatic monoolefin in the presence of a catalyst based on a dealuminised zeolite Y with a SiO2/Al2O3 molar ratio of between 8 and 70, the product of this reaction b...
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JPH10120599A |
To obtain one or more different hydrocarbons at relative low temperature and low cost by subjecting an unsaturated hydrocarbon component to double decomposition without using a transition metal in the presence of a catalyst system having...
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JP2744832B2 |
A process for the selective manufacture of 2,6-diisopropylnaphthalene from naphthalene advantageously combines an equilibration reactor to enhance the amount of monoisopropylnaphthalene fed to the alkylation reactor, and the use of a sha...
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JP2743204B2 |
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JPH10101592A |
To obtain an alkylnaphthalene in a high yield of a 2,6-dialkyl derivative and a 2-alkyl derivative, by reacting an isomeric mixture of a dialkylnaphthalene with naphthalene as raw materials in the presence of a specific catalyst composit...
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JPH10503419A |
A process for a shape selective hydrocarbon conversion such as toluene disproportionation, involves contacting a reaction stream under conversion conditions with a catalytic molecular sieve which has been preselectivated by agglomerating...
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JPH10502908A |
A process is provided for selective catalytic conversion of certain hydrocarbon feedstocks to product rich in para-dialkyl substituted benzenes. The catalyst required in the process comprises a crystalline material having the structure o...
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JPH1072380A |
To provide a method for disproportionating toluene, capable of markedly increasing a production rate and improving a selectivity in conversion thereof to benzene and xylenes at a low temperature without losing a catalytic activity by rea...
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JPH10502608A |
The present invention relates to new crystalline zeolite SSZ-41 which comprises oxides of (1) silicon or a mixture of silicon and germanium, and (2) zinc, said zinc being present in an amount from about 2 wt % to about 5 wt % of zinc met...
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