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Class 585/268 - To produce polycyclic


Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter wherein the product material has more than
No. of patents: 44
Last issue date: 04/22/2008


1    
NumberTitleIssue Date
7361714Catalyst and method for hydrogenating aromatic compounds
The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or esters of these, via ring hydrogenation of the corresponding aromatic polycarboxylic acids or esters of these, and also to catalysts ...
04/22/2008
7319082Process for the preparation of molecular sieve adsorbent for selective adsorption of oxygen from air
The invention relates to the manufacture of molecular sieve adsorbents, which are selective towards oxygen from its gaseous mixture with argon and/or nitrogen. More particularly, this invention relates to the manufacture of molecular sieve adsorbents useful for the ...
01/15/2008
7230148Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds
The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based...
06/12/2007
7081555Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds
The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based...
07/25/2006
6858769Lithium aluminate layered catalyst and a selective oxidation process using the catalyst
A catalyst for the selective oxidation of hydrogen has been developed. It comprises an inert core such as cordierite and an outer layer comprising a lithium aluminate support. The support has dispersed thereon a platinum group metal and a promoter metal, e.g. platin...
02/22/2005
6506953Hydroalkylation 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 the step of contacting the aromatic hydrocarbon with hydro...
01/14/2003
6037513Hydroalkylation of aromatic hydrocarbons
There is described a process and a catalyst for the hydroalkylation of an aromatic hydrocarbon, particularly benzene, wherein the catalyst comprises a first metal having hydrogenation activity and a crystalline inorganic oxide material having a X-ray diff...
03/14/2000
5986154Process for the hydrogenation of aromatic compounds comprising chlorine injection, using catalysts based on a noble metal
The invention concerns a process for the hydrogenation of aromatic compounds contained in feeds with an initial boiling point of more than 100° C. and which contain at least 10% by weight of aromatic compounds. It consists of introducing chlorine in a co...
11/16/1999
5789637Process for the hydrogenation of aromatic compounds comprising chlorine injection, using catalysts based on a noble metal
The invention concerns a process for the hydrogenation of aromatic compounds contained in feeds with an initial boiling point of more than 100° C. and which contain at least 10% by weight of aromatic compounds. It consists of introducing chlorine in a co...
08/04/1998
5449847Selective conversion of benzene to tercyclohexane
There is provided a process for preparing tercyclohexane by reacting benzene with hydrogen. The process involves the use of a catalyst comprising an acidic solid and a hydrogenation component. The acidic solid may comprise a Group IVB metal oxide, such as...
09/12/1995
5350504Shape selective hydrogenation of aromatics over modified non-acidic platinum/ZSM-5 catalysts
Non-acidic tin-, lead-, or indium-modified Pt/ZSM-5 catalysts are effective catalysts for the shape selective preferential hydrogenation of certain aromatic hydrocarbons in admixture with others. These catalysts can be used to reduce the aromatic content ...
09/27/1994
5146024Hydroalkylation of aromatic hydrocarbons
A process for converting aromatic hydrocarbons (in particular benzene) to cycloalkyl-substituted aromatic hydrocarbons (in particular cyclohexylbenzene) in the presence of free hydrogen and a palladium-promoted zeolite catalyst is carried out in the prese...
09/08/1992
4950386Acidic promotion of transition metal sulfide catalysts for selective hydrogenation
It has now been discovered that hydrocarbon feeds containing a polycyclic aromatic compound or mixtures thereof can be selectively hydrogenated by contacting the feed with a transition metal catalyst and hydrogen in the presence of an acid to provide a hy...
08/21/1990
4840745Fluid composition
A stable fluid composition is provided by this invention which contains a cis-o-tercyclohexyl compound and a trans-o-tercyclohexyl compound at a weight ratio of 25:75-65:35. This composition is useful as a fluid for traction drive....
06/20/1989
4795840Method for preparing hydrocarbon mixture solvent
The present invention provides a method for preparing a hydrocarbon mixture solvent comprising 1 to 15 wt % of alkyl tetralins and 0 to 10 wt % of aromatic hydrocarbons and having a boiling point of 160° to 300° C., the solvent being substantially free ...
01/03/1989
4783565Selective preparation of cis-perhydroacenaphthene
A cis-isomer of perhydroacenaphthene is selectively prepared through hydrogenation of acenaphthene by effecting hydrogenation of 80° to 200° C. in the presence of a Ru and/or Rh based catalyst. A cis-isomer having the highest boiling point is obtained a...
11/08/1988
4774013Perhydrofluorene derivatives and fluids for traction drive
This invention provides a novel perhydrofluorene derivative which is represented by the following general formula and which is useful as a fluid for traction drive and a process for production of the derivative. ##STR1## wherein R1, R...
09/27/1988
4761510Selective preparation of trans-perhydroacenaphthene
Trans-isomers of perhydroacenaphthene are selectively prepared through hydrogenation of acenaphthene by effecting hydrogenation at 200° to 300° C. in the presence of a nickel catalyst on a kieselguhr carrier....
08/02/1988
4751335Process for preparing a fluid for traction drive
A process for preparing a fluid for traction drive from a fraction containing compounds having at least four aromatic rings is disclosed. The fraction is a by-product produced at the time of the preparation of alpha-methyl-benzylalkylbenzenes by alkylatio...
06/14/1988
4696733Process for selectively hydrogenating polycondensed aromatics
A process is disclosed for hydrogenating or partially hydrogenating polynuclear aromatics by contacting them with manganese nodules in the presence of hydrogen at elevated temperatures. The resulting partially hydrogenated products are useful as hydrogen ...
09/29/1987
4684754Working fluid for traction drive
The working fluid for traction drive comprises (A) a compound having, in a molecule, two decahydronaphthalene rings bonded either directly to each other or to the same or different carbon atoms in an alkane molecule or a compound having, in a molecule, on...
08/04/1987
4380683Hydroalkylation of benzene and analogs
Mononuclear aromatic hydrocarbons, e.g. benzene and analogs, are converted by hydroalkylation to the corresponding cycloalkyl aromatics by contacting the mononuclear aromatic hydrocarbons in the presence of hydrogen with a catalyst comprising a rare earth...
04/19/1983
4329529Traction fluids for traction drive transmissions
Traction fluids for traction drive transmissions, prepared by hydrogenating an alkylation product obtained by the reaction of xylene and/or toluene, together with or without ethylbenzene, with styrene....
05/11/1982
4329531Hydroalkylation catalyst and methods for producing and employing same
An aromatic hydrocarbon is contacted under suitable hydroalkylation conditions with a composition comprising a calcined, acidic, nickel and rare earth-treated crystalline zeolite....
05/11/1982
4322284Solvent refining of coal using octahydrophenanthrene-enriched solvent and coal minerals recycle
Ash-containing raw coal is converted to a liquid fuel product by contacting the coal with hydrogen and an OHP-enriched solvent containing OHP and THP in a ratio of OHP/THP greater than 0.4, wherein the OHP is present in an amount of at least 5 weight perc...
03/30/1982
4313017Selective hydrogenation of polynuclear aromatic reactants
Polynuclear aromatic reactants are selectively hydrogenated in the presence of hydrogen gas with a zinc titanate catalyst....
01/26/1982
4312746Catalytic production of octahydrophenanthrene-enriched solvent
The OHP content of an OHP- and THP-containing solvent is enriched by contacting the solvent with hydrogen in the presence of a supported catalyst comprising Group VIB and Group VIII metals under conditions to increase the OHP/THP ratio in the solvent to a...
01/26/1982
4268699Hydroalkylation using nickel-ruthenium catalyst on zeolite type support
Hydroalkylation of aromatic hydrocarbons using an acidic crystalline zeolite type support having ruthenium and nickel thereon, the nickel having been placed thereon responsive to correlation of hydroalkylation selectivity and the amount of alkali metal or...
05/19/1981
4224458Process for homogeneous hydrogenation of polycyclic aromatic hydrocarbons
An improved process is described for the homogeneous hydrogenation of polycyclic aromatic hydrocarbons utilizing anionic Group VIII metal hydride compositions as catalysts which contain phosphorus, arsenic or antimony organoligands. Use of these anionic c...
09/23/1980
4219687Hydroalkylation of benzene and analogs
Mononuclear aromatic hydrocarbons, e.g. benzene and analogs, are converted by hydroalkylation to the corresponding cycloalkyl aromatics by contacting the mononuclear aromatic hydrocarbons in the presence of hydrogen with a catalyst comprising a rare earth...
08/26/1980
4152362Hydroalkylation using a rhenium, nickel, rare earth zeolite
A reaction mixture comprising an aromatic hydrocarbon and hydrogen is contacted under hydroalkylation conditions with a composition comprising at least one rhenium compound supported on a calcined, acidic, nickel and rare earth-treated crystalline zeolite...
05/01/1979
4131646Preparation of hydrogen peroxide from dihydroanthracene hydroperoxides
In a process for the manufacture of hydrogen peroxide wherein a compound containing the anthracene nucleus is hydrogenated to the corresponding 9,10-dihydroanthracene and the resulting 9,10-dihydroanthracene is oxidized to the corresponding 9-(or 10-) hyd...
12/26/1978
4128473Catalytic hydrotreating process
Carbonaceous liquids boiling above about 300° C such as tars, petroleum residuals, shale oils and coal-derived liquids are catalytically hydrotreated by introducing the carbonaceous liquid into a reaction zone at a temperature in the range of 300° to 45...
12/05/1978
4123470Biaryl production
Aromatic hydrocarbons are converted to biaryl compounds in a two-step process comprising hydroalkylation of the aromatic hydrocarbons to cycloalkyl aromatic hydrocarbons followed by dehydrogenation in the presence of a metal dehydrogenation catalyst and a...
10/31/1978
4122125Hydroalkylation using multimetallic zeolite catalyst
An aromatic hydrocarbon is contacted under hydroalkylation conditions and in the presence of hydrogen with a catalyst comprising at least one ruthenium compound and at least one nickel compound supported on a calcined, acidic, rare earth-treated crystalli...
10/24/1978
4118434Hydroalkylation using multimetallic zeolite catalyst
An aromatic hydrocarbon is contacted under hydroalkylation conditions and in the presence of hydrogen with a composition comprising at least one ruthenium compound impregnated on a calcined, acidic, nickel and rare earth-treated crystalline zeolite suppor...
10/03/1978
4115463Production of cycloalkylaromatics
Cycloalkylaromatics are produced from aromatic hydrocarbons in the presence of hydrogen and a catalyst consisting essentially of ruthenium, nickel and a support material selected from the group consisting of active clay and silica-alumina....
09/19/1978
4094920Hydroalkylation using multi metallic zeolite catalyst
An aromatic hydrocarbon is contacted under hydroalkylation conditions and in the presence of hydrogen with a composition comprising at least one platinum compound supported on a calcined, acidic, nickel and rare earth-treated crystalline zeolite which add...
06/13/1978
4094918Hydroalkylation process using multi-metallic zeolite catalyst
An aromatic hydrocarbon is contacted under hydroalkylation conditions and in the presence of hydrogen with a composition comprising at least one rhodium or palladium compound or mixture thereof supported on a calcined, acidic, nickel and rare earth-treate...
06/13/1978
4093671Hydroalkylation using multi-metallic zeolite catalyst
An aromatic hydrocarbon is contacted under hydroalkylation conditions and in the presence of hydrogen with a composition comprising at least one platinum compund supported on a calcined, acidic, nickel and rare earth-treated crystalline zeolite....
06/06/1978
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