Catalyst for preparing α-phenylethanol by hydrogenation of acetophenone, preparation method thereof and application thereof

Abstract

Disclosed is catalyst preparation method for liquid phase hydrogenation of acetophenone in preparation of α-phenylethanol. The method includes adding water, small alcohol, Gemini surfactant and organic pore-forming agent to reactor. Then adding silica sol and stirring to prepare aqueous dispersion of silica sol; preparing alkaline precipitant and mixed solution containing salts of copper containing compound, zinc containing compound, rare-earth metal containing compound and alkaline-earth metal containing compound, adding alkaline precipitant and mixed solution together to aqueous dispersion, followed by precipitation, ageing, filtration, washing, drying, calcination and molding to obtain catalyst. By using silica sol and silicate as composite silicon source, adding organic pore-forming agent before precipitation process, modifying catalyst by Zn, rare-earth metal and alkaline earth metal, when using liquid phase hydrogenation of acetophenone to prepare α-phenylethanol, catalyst has high activity and good selectivity, and effectively improves the catalyst's liquid resistance, has high strength and good stability.