| abstract |
The invention discloses a method for preparing a hydrogenation catalyst and a method for preparing hydrogenated bisphenol A. The catalyst is obtained by modifying the supported catalyst with aminophenol in the presence of a phosphate buffer. Shorter reaction times can be achieved under relatively mild reaction conditions. The content of dehydration by-reaction products is reduced, the catalyst performance is stable, the service life is long, and multiple batches are applied without deactivation. The content of trans-trans isomer in hydrogenated bisphenol A can be effectively increased, thereby improving its application value. The conversion rate of bisphenol A raw material reaches 100%, the yield of hydrogenated bisphenol A is ≥99%, the content of trans-trans isomer is 60%-65%, and the content of other components is ≤1%. |