Process for producing dialkylnaphthalene

Details Process for producing dialkylnaphthalene Process for producing dialkylnaphthalene

B - Operations, Transporting

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B01J 23/54 (2006.01) B01J 23/60 (2006.01) B01J 23/62 (2006.01) B01J 23/76 (2006.01) C07C 5/31 (2006.01) C07C 5/367 (2006.01) C07C 5/41 (2006.01) C07C 15/24 (2006.01)

Patent

CA 2093511

A method for for preparing a dialkylnaphthalene in one step by contacting an dialkylbenzene compound with a solid catalyst in a gas or liquid phase in the presence of hydrogen, using a catalyst having composition (I) or (II) below: (1) (M1)a~(M2)b~(SiO2~XAl2O3)~(Al2O3)c (I) (2) Mixture of II-(i) and II-(ii): (M3)d~(Al2O3) II-(i) (M4)e~(SiO2~XAl2O3) II-(ii) wherein M1 is a metal selected from the group consisting of metals belonging to group VIII of a periodic table and ruthenium; M2 is a member selected from the group consisting of zinc, gallium, and oxides thereof; M3 is a metal belonging to group VIII of a periodic table; M4 is at least one alkali metal; and a, b, e, d, e, and X represent proportions, respectively.

L'invention se rapporte à un procédé pour la production de dialkylnaphtalène en une seule étape, qui consiste à mettre de l'alcénylbenzène en contact avec un catalyseur solide ayant la composition suivante (I) ou (II) dans une phase gazeuse ou liquide en présence d'hydrogène: (1) (M1)a.(M2)b.(SiO2XAl2O3).(Al2O3)c ... (I), (2) un mélange de II-(i) avec II-(ii); (M3)d.(Al2O3) ... II-(i); (M4)e.(SiO2XAl2O3) ... II-(ii); où M1 représente un métal choisi parmi les métaux du groupe VIII et le ruthénium; M2 représente un élément choisi parmi le zinc, le gallium et leurs oxydes; M3 représente un métal du groupe VIII; M4 représente un métal alcalin; et a, b, c, d, e et X représentent les proportions de chaque constituant.

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