低碳化学与化工2025，Vol.50Issue(10)：27-35,9.DOI:10.12434/j.issn.2097-2547.20240503
Cu-Mn催化剂制备方法对苯乙酮加氢制苯乙醇催化性能的影响
Effects of preparation methods of Cu-Mn catalysts on catalytic performances of acetophenone hydrogenation to phenylethanol
摘要
Abstract
As an important chemical raw material,phenylethanol can be prepared by catalytic hydrogenation of acetophenone.However,the currently used catalysts for hydrogenation of acetophenone to phenylethanol have problems such as low product selectivities,poor stabilities and high costs.Cu-Mn catalysts(Cu-MnOx-MT and Cu-MnOx-CP)were prepared by melting method and co precipitation method,respectively.The structures of catalysts were characterized by XRD,H2-TPR,etc.The catalytic performances of catalysts were studied and the reaction conditions were optimized.The results show that compared with Cu-MnOx-CP,Cu-MnOx-MT has more abundant oxygen vacancy active sites,which are conducive to enhancing the migration of surface oxygen,increasing the adsorption energy of acetophenone on the catalyst surface,reducing the reaction energy barrier,promoting the activation of acetophenone,and thus improving the acetophenone conversion rate.Under the optimal conditions of reaction temperature of 100℃,reaction pressure of 2.5 MPa,liquid space velocity of 1.8 h-1 and V(H2):V(acetophenone)of 15:1,Cu-MnOx-MT exhibits better catalytic performance with the acetophenone conversion rate of 99.75%and phenylethanol selectivity of 99.83%after reacting for 8 h.In addition,after continuously reacting under optimal reaction conditions for 40 h,the acetophenone conversion rate of Cu-MnOx-MT remains above 99%.关键词
苯乙酮/苯乙醇/Cu-Mn催化剂/熔融法Key words
acetophenone/phenylethanol/Cu-Mn catalysts/melting method分类
化学化工引用本文复制引用
曹媛,贺洋,刘宇飞,王康军,刘蝈蝈..Cu-Mn催化剂制备方法对苯乙酮加氢制苯乙醇催化性能的影响[J].低碳化学与化工,2025,50(10):27-35,9.基金项目
辽宁省自然科学基金(2021-NLTS-12-03) （2021-NLTS-12-03）
辽宁省教育厅项目(LJKZ0439) （LJKZ0439）
辽宁省教育厅青年项目(LJKQ2021068) （LJKQ2021068）
沈阳化工大学优青托举项目(2019YQ01). （2019YQ01）
