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JP2001504084A |
A process is provided for the production of paraxylene by the methylation of toluene in the presence of a zeolite bound zeolite catalyst. The catalyst comprises first zeolite crystals which are bound together by second zeolite crystals. ...
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JP2001010984A |
To provide a method for producing acetylene and synthesis gas, capable of obtaining the products with comparatively low consumption of energy.This method for producing acetylene and synthesis gas comprises thermally treating a starting m...
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JP2000515849A |
This invention relates to a process and a chemical plant for the production primarily of paraxylene. In particular the process and chemical plant utilize zeolite membranes for enhanced paraxylene production.
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JP2000319289A |
To obtain the subject compound useful for efficient vitamin D analog synthesis by chlorinating a specific cyclohexane compound with triphosgene in the presence of an organic base followed by reacting the thus produced compound with a dip...
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JP3110043B2 |
A process for oligomerizing an alkene-containing feedstock comprises contacting the feedstock with a catalyst comprising an inorganic, porous, non-layered crystalline phase material exhibiting, after calcination, an X-ray diffraction pat...
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JP2000511107A |
There is provided a zeolite bound zeolite catalyst which does not contain significant amounts of non-zeolitic binder and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The catalyst comprises first zeo...
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JP2000509710A |
PCT No. PCT/NL97/00225 Sec. 371 Date Mar. 3, 1999 Sec. 102(e) Date Mar. 3, 1999 PCT Filed Apr. 25, 1997 PCT Pub. No. WO97/42145 PCT Pub. Date Nov. 13, 1997Process for converting a geminally substituted cyclopentadiene containing 2-6 subs...
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JP3072348B2 |
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JP3072347B2 |
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JP3068874B2 |
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JP2000191825A |
To recover a high purity styrene monomer by preventing the re- polymerization of the styrene monomer produced by thermal decomposition and removing foreign polymers or the like contained in styrene resin waste. A method for recovering a ...
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JP3057398B2 |
A steam activated catalyst containing phosphorus and H-ZSM-5 may be used to convert higher hydrocarbons to lower olefins, especially ethylene, propylene, butylenes and pentenes at a preferred temperature range of 500 to 700 DEG C and a p...
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JP2000167408A |
To provide a catalyst which is suitable to allow aromatic hydrocarbons having >9 carbon atoms to react and to convert into toluene and aromatic hydrocarbons having 8 carbon atoms move useful as a gasoline base, and which has high activit...
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JP3036399B2 |
PURPOSE: To provide the method for producing the subject compound by thermally decomposing dicyclopentadiene in a liquid phase and subsequently subjecting the produced cyclopentadiene to a Diels Alder reaction with butadiene, capable of ...
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JP2000504304A |
This invention relates to phase transfer catalysis (PTC) using a composition of synthetic ultra-large pore crystalline material which contains a cation of an onium compound, e.g. cetyltrimethylammonium, within the pores of said material....
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JP2000103755A |
To provide a method for recovering a compound existing in a mixture of heavy residual materials.In this method for recovering a compound contained in a mixture of heavy residual materials, including performing reaction/distillation opera...
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JP3003802B2 |
PCT No. PCT/DE95/00233 Sec. 371 Date Aug. 21, 1996 Sec. 102(e) Date Aug. 21, 1996 PCT Filed Feb. 16, 1995 PCT Pub. No. WO95/22587 PCT Pub. Date Aug. 24, 1995The invention relates to the protection of tubular reactors or heat exchangers a...
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JP2970683B2 |
A catalyst for hydrogenolytic dealkylation comprising rhodium on a crystalline metallo-silicate carrier and a process for hydrogenolytically dealkylating a hydrocarbon mixture mainly comprising alkyl aromatic hydrocarbons in the presence...
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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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JP2965433B2 |
This invention relates to a process for cracking waste polymers in a fluidized bed reactor to produce vaporous products comprising primary products which can be further processed, eg in a steam cracker to produce olefins, characterized i...
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JPH11263982A |
To provide an operation controlling device capable of reducing load of an operator in a start up/shut down operation performed in the case that a single reactor is removed from or placed into the system when there are plural reactors in ...
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JP2952410B2 |
To obtain lower oelfins such as ethylene, propylene and the like in high selectivity at lower temperatures with industrial advantage by catalytically cracking hydrocarbon feedstock over a catalyst mainly containing specific silicon dioxi...
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JP2952409B2 |
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JPH11246445A |
To provide a process for producing propylene that uses olefins of relatively low value in the oil refineries or petrochemical plants as the feedstock for catalytic conversion of olefins to lighter olefins particularly to propylene. In th...
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JP2946034B1 |
[wrap up] [Task] When a hydrocarbon raw material is catalytically cracked using a catalyst to produce lower olefins such as ethylene and propylene, the catalyst is stable to water vapor and carbon dioxide under reaction conditions, and a...
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JP2943266B2 |
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JP2935275B2 |
A process for producing light olefins, especially ethylene, propylene,isobutylene and isoamylene, together with high octane gasoline as by-product, comprises that petroleum hydrocarbons are contacted with phosphorus and rare earth contai...
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JP2933636B2 |
A catalyst for hydrodealkylation of alkylaromatic compounds which comprises porous alumina particles with coke deposited thereon in the pores, said alumina particles having a pore volume of 0.1 to 1.5 cm3/g and a specific surface area of...
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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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JPH11508259A |
PCT No. PCT/US96/10580 Sec. 371 Date Dec. 18, 1997 Sec. 102(e) Date Dec. 18, 1997 PCT Filed Jun. 19, 1996 PCT Pub. No. WO97/00925 PCT Pub. Date Jan. 9, 1997Method for thermally decomposing addition polymers, such as polyolefins, into mon...
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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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JP2922210B2 |
PURPOSE:To maintain the high selectivity and high activity of a catalyst under a relatively low hydrogen pressure by continuously subjecting a raw material oil containing an alkyl aromatic compound to a hydrogenating dealkylation reactio...
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JP2905910B2 |
Recently, as a process for manufacturing cyclopentadiene resin-shaped articles, an attention has been given to reaction injection molding (RIM). To conduct RIM, it is necessary to use high purity dicyclopentadiene (DCPD) as the raw mater...
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JP2902928B2 |
A liquid tin-containing antifoulant composition is injected into a metal-walled thermal cracking reactor tube, concurrently with the injection of a gaseous stream (preferably a steam-diluted C₂-C₄ alkane stream), through a nozzle of ...
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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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JPH11130904A |
To facilitate the storage or transport of used formed polystyrene resin aticles occurring at electric home appliance stores or supermarkets, to enable the production of recycled polystyrene resin articles, and to enable the effective the...
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JP2885876B2 |
PURPOSE:To make a high-speed fluidized layer wherein reverse mixing of gas and particles hardly occur and to perform hydrodealkylation with high selectivity and high conversion by using a twin-tower fluidized layer consisting of a decomp...
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JP2881034B2 |
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JPH1149704A |
To efficiently obtain the subject gas that is useful for increasing the calorie of town gas through a simple one-step process by bringing saturated hydrocarbons into contact with a specific metal catalyst supported on a carrier in the pr...
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JPH1135947A |
To reduce production costs substantially and enhance international competitiveness by specifying the number of flow of gas fluid at the inlet of a super heat zone of a thermal cracking furnace, making the number of flow at the outlet sma...
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JPH1129775A |
To provide a reaction pipe in a pyrolysis oven for preparation of ethylene which has enhanced caking resistance and carburization resistance and in addition has reduced decoking frequency and improved service life. This reaction pipe 2 i...
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JPH1129776A |
To improve the coking resistance and carburization resistance of a reaction pipe in a pyrolysis oven for preparation of ethylene. This reaction pipe comprises a high Ni-Cr-base heat-resistant alloy comprising 1.5 to 4 wt.% Si and/or 1 to...
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JP2838195B2 |
To obtain a butane hydrocracking catalyst having high activity and good selectivity by depositing platinum on a synthetic smectite having a specified chemical composition and property. A synthetic smectite expressed by a general formula,...
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JP2832492B2 |
Process for the production of alkylaromatic hydrocarbons from natural gas containing methane, characterised in that it comprises the following three successive stages: 1) thermal cracking of the natural gas with formation of hydrogen a...
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JPH10298345A |
To provide a method for treating waste expanded polystyrene, designed to transform such a waste into styrene monomer at a low cost using a small amount of solvent without the need of solvent separation by dissolving the waste expanded po...
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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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JPH10251170A |
To provide a method of suppressing the formation of coke on a heat transfer surface to be used for cooling or heating a petroleum feedstock under the coke formation conditions. In order to inhibit the formation of coke on a heat transfer...
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JP2801686B2 |
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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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