Preparing cyclohexene catalyst and for benzene hydrogenation its manufacturing method

Abstract

A catalyst for preparing cyclohexene from benzene by hydrogenating is prepared from metal Ru, one or two transition metals or RE elements, the hydroxide of alkali metal as precipitator, and hydrophilic indifferent oxide. It has high activity and selectivity.

Description

Technical field:

[0001] The invention belongs to the technical field of catalysts containing metals, oxides or hydroxides, and specifically relates to a novel industrial catalyst for producing cyclohexene by hydrogenation of benzene and a preparation method thereof. Background technique:

[0002] Cyclohexene is an intermediate of many medicines and pesticides. It can be directly hydrated to generate cyclohexanol, directly oxidized to generate adipic acid, or oxidized to generate cyclohexanone by Wacker method. Cyclohexanol, cyclohexanone and adipic acid are important chemical raw materials. Cyclohexene has no natural products and must be chemically synthesized, and hydrogenation of benzene is the best route. In particular, the production of nylon 66 by partial hydrogenation of benzene is safer and more reliable than the traditional route of complete hydrogenation of benzene, consuming one-third less hydrogen, and the by-product is only cyclohexane, with a carbon yield of 10...