Abstract:
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.
Abstract:
Acid catalyzed cleavage products of hydrocarbyl aromatic hydroperoxides are subjected to extractive distillation employing a hydrocarbon solvent. In a specific embodiment a mixture containing cyclohexylbenzene, phenol and cyclohexanone obtained from the acid catalyzed cleavage of cyclohexylbenzene hydroperoxide is subjected to extractive distillation employing hexadecane.
Abstract:
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.
Abstract:
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.
Abstract:
A method for producing poly(arylene sulfide) of high molecular weight by subjecting to polymerization conditions a reaction mixture of alkaline metal hydroxide, halothiophenol and organic amide with a molar ratio of alkaline metal hydroxide to halothiophenol in a range of about 1.6 to about 3.2.
Abstract:
Cobalt and gold in a ruthenium hydrogenation catalyst markedly increases the yield of product. A method for hydrogenating branched-chain olefinically unsaturated aliphatic dinitrile employing a ruthenium-cobalt-gold catalyst to produce saturated diamines is set forth.
Abstract:
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 crystalline zeolite.
Abstract:
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 support.
Abstract:
A cyclohexylbenzene-cyclohexanone-phenol-containing mixture, for example as obtained by the cleavage of cyclohexylbenzene hydroperoxide, is separated by first catalytically hydrogenating selectively the phenol in the mixture, resulting in a mixture of cyclohexylbenzene, which is unchanged, and cyclohexanone; the thus obtained mixture is subjected to fractional distillation to obtain cyclohexylbenzene which can be returned as to a process for the production of cyclohexylbenzene hydroperoxide, and cyclohexanone.