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JPH0687496A |
PURPOSE: To utilize olefin components as fuel to be applied to hypersonic propulsion of a hypersonic vehicle by a method wherein the temperature gradient of a high heat flow flux structure region is reduced by heat transmission to hydroc...
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JPH0618794B2 |
Light distillates obtained in the petroleum industry or petrochemical industry are submitted to catalytic cracking in the presence of crystalline silica polymorph of the silicalite type, in the presence of water at a mola ratio of water:...
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JPH0617320B2 |
A process for producing isobutene, comprising contacting, at elevated temperatures, a feed containing propylene with a catalyst comprising a crystalline silica polymorph of the silicalite type in the presence of steam to recover a stream...
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JPH0615498B2 |
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JPH0615479B2 |
A process is disclosed, for the manufacture of carbonylated products and/or olefins by reacting hydrocarbons with carbon monoxide in the presence of a transition metal complex, under irradiation with light.
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JPH0656707A |
PURPOSE: To produce the product stream capable of obtaining isobutylene and isopentene from a refinery naphtha in high yield. CONSTITUTION: An olefinic naphtha stream contg. 5-9C olefins is brought into contact with a low acidity crystal...
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JPH0613720B2 |
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JPH0611648B2 |
A crystalline zeolite SSZ-23 is prepared using an adamantane quaternary ammonium as a template.
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JPH067928B2 |
A process for converting a feedstock containing 1 to about 6 carbon atoms per molecule which includes (a) contacting the feedstock with a solid composition comprising a crystalline microporous three dimensional solid catalyst having pore...
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JPH062578B2 |
A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.
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JPH0587493B2 |
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JPH0585595B2 |
A catalyst precursor is prepared by intimately mixing a nickel-aluminium Feitknecht compound with a non-calcined alumino-silicate clay mineral and at the same time and/or subsequently with at least one additive comprising an alkaline ear...
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JPH0581304B2 |
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JPH0580960B2 |
A process for the conversion of an aromatic-rich, distillable gas oil charge stock to selectively produce large quantities of high quality middle distillate while minimizing hydrogen consumption which process comprises the steps of react...
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JPH0580406B2 |
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JPH0576453B2 |
A process to convert alkyl aromatic hydrocarbons substantially by hydrodealkylation comprises contacting an alkyl aromatic hydrocarbon feed under conversion conditions with an intermediate pore crystalline aluminosilicate zeolite-based c...
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JPH0572327B2 |
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JPH0567613B1 |
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JPH05506400A |
A hydrocracking process using a catalyst containing a hydrogenation component, zeolite beta, and between 1 and 15 weight percent of a Y zeolite having a unit cell size less than about 24.40 angstroms.
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JPH0566330B2 |
Moldings are described which are composed of a silicic acid with a layer structure, or salts thereof with the general formula (H,M)2SiyO2y+1, or the corresponding hydrates, M representing lithium, sodium, potassium or ammonium and y bein...
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JPH0563410B2 |
A composite membrane having molecular sieve activity and/or catalytic activity composed of a porous support of a metal, an inorganic material or a polymeric material and combined with its one surface, an ultrathin film of a cage-shaped z...
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JPH0559789B2 |
Compositions of matter comprise oxides of silicon, aluminum and/or titanium mixed with combinations of manganese oxide and magnesium oxide; iron oxide and magnesium oxide; calcium, strontium, barium, tin and/or antimony oxides, manganese...
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JPH05201888A |
PURPOSE: To obtain the subject new method for producing dimethylnaphthalene including 2,6- and 2,7-dimethylnaphthalenes by using coal tar prepared according to the rapid pyrolysis of coal as a crude raw material. CONSTITUTION: Coal is ra...
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JPH0546873B2 |
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JPH05156233A |
PURPOSE: To provide a stain-preventing agent containing a specific nitrosophenol compound as an active ingredient, preventing the production of stain-forming polymers in the distillation tower of an ethylene-producing facility when appli...
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JPH05117178A |
PURPOSE: To produce styrene while saving consumption of hydrogen by carrying out purification, dealkylation, etc., of a raw material aromatic hydrocarbon containing impurities and alkylaromatic hydrocarbons and recycling hydrogen by-prod...
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JPH0529504B2 |
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JPH0529506B2 |
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JPH0585964A |
PURPOSE: To continuously obtain high-purity styrene monomer in high yield at a low cost by adding a polymerization inhibitor to a styrene resin such as waste styrene foam, depolymerizing the polymer and passing the obtained crude styrene...
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JPH0513090B2 |
Amorphous, approximately spherical silica particles prepared by the acidic hydrolysis of an approximately spherical synthetic calcium silicate having a uniform microgranular structure on their external surfaces and a structure in the int...
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JPH05500650A |
A crystalline low-aluminum boron beta zeolite is prepared using a diquaternary ion as a template.
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JPH057067B2 |
New catalysts, useful for performing hydrocarbons conversions such as reforming, production of aromatics, isomerization of paraffinic and aromatic hydrocarbons, hydrocracking, hydrodealkylation and steam-dealkylation, are formed of a car...
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JPH055815B2 |
A process is disclosed, for the manufacture of carbonylated products and/or olefins by reacting hydrocarbons with carbon monoxide in the presence of a transition metal complex, under irradiation with light.
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JPH054136B2 |
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JPH054329B2 |
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JPH053879B2 |
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JPH0479980B2 |
Molecular sieve compositions are prepared by extracting aluminum and substituting titanium and/or iron for extracted aluminum to give molecular sieve products containing framework titanium and/or iron atoms. The process of preparing the ...
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JPH0479701B2 |
Catalysts for the treatment of hydrocarbons are presulfurized or presulfided ex-situ, in the absence of hydrogen, by means of a polysulfide of the general formula R-S(n)-R' wherein n is an interger from 3 to 20 and R and R' are each an o...
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JPH04354541A |
PURPOSE: To obtain a catalyst exhibiting a high attrition resistance and a high selectivity in preparation of 3-4C olefins by bonding zeolite with a binding agent contg. aluminum phosphate having a surface area of ≤a specified value. C...
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JPH04352731A |
PURPOSE: To obtain an olefin-contg. mixture of hydrocarbons in high yield of lower olefins and in a small ratio of ethylene to propylene by bringing a hydrocarbon supply source material into contact with a specified zeolite catalyst unde...
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JPH04346940A |
PURPOSE: To decompose diphenylethanes and to recover benzene, toluene and ethylbenzene as useful components with industrial advantage in a high yield without degradation of catalytic activity. CONSTITUTION: In decomposition and recovery ...
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JPH0475953B2 |
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JPH04334328A |
PURPOSE: To selectively decompose hydrocarbons having a small molecular diameter by bringing the hydrocarbons into contact with a catalyst in which vapor of a silanizing agent is deposited on zeolite according to a chemical vapor deposit...
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JPH0471578B2 |
PURPOSE:To increase reactive selectivity by permitting a catalyst carrier consisting of spinel crystal to carry transition metal selected from among Mo, Co, Ni and W as a catalytic activate component and thereby forming a catalyst for hy...
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JPH0471004B2 |
Gallophosphate compositions of the formula (molar oxide ratios): mR:Ga2O3:1.0 + 0.2 P2O5, where "R" represents at least one organic templating agent and "m" has a value from 0.02 to 0.2. The use of these novel gallophosphates is also dis...
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JPH0466217B2 |
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JPH04290836A |
PURPOSE: To save fuel and to save a furnace weight by making heat transfer to raw material efficient and easy and shortening the length of a radiant region, thereby maintaining a coil outlet at a low temp. and lessening the coke formatio...
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JPH0463010B2 |
Synthetic zeolites are prepared from a premix of zeolite seeds and colloidal silica by adding an alkaline solution and maintaining the resultant mixture at hydrothermal conditions.
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JPH0456667B2 |
Binder-free zeolite prepared by kneading and molding crystalline aluminosilicate with a silica/alumina binder and crystallizing the binder in the molding to convert 90% or more of the whole molding into crystalline aluminosilicate. The o...
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JPH0454620B2 |
A catalyst is provided, which is especially applicable for the selective production of certain desired hydrocarbons, comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint ind...
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