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

曹媛; 贺洋; 刘宇飞; 王康军; 刘蝈蝈

doi:10.12434/j.issn.2097-2547.20240503

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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

更新时间：2025-05-08

- 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
- 低碳化学与化工 2025: 1-9.
- 作者机构：
  
  沈阳化工大学化学工程学院，辽宁沈阳 110142
- 作者简介：
  
  曹媛（1998—），硕士研究生，研究方向为低碳化工与催化剂，E-mail：694929675@qq.com。
  刘蝈蝈（1988—），博士，副教授，研究方向为碳一化工与催化剂，E-mail：lguoguo@syuct.edu.cn。
- 基金信息：
  
  辽宁省自然科学基金(2021-NLTS-12-03);辽宁省教育厅项目(LJKZ0439);辽宁省教育厅青年项目(LJKQ2021068);沈阳化工大学优青托举(2019YQ01)
- DOI：10.12434/j.issn.2097-2547.20240503
  中图分类号： TQ426.8
- 收稿日期：2024-12-19，
  
  修回日期：2025-02-10，
  
  网络出版日期：2025-05-06，
- 稿件说明：
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曹媛,贺洋,刘宇飞等.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,

CAO Yuan,HE Yang,LIU Yufei,et al.Effects of preparation methods of Cu-Mn catalysts on catalytic performances of acetophenone hydrogenation to phenylethanol[J].Low-Carbon Chemistry and Chemical Engineering,
曹媛,贺洋,刘宇飞等.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, DOI：10.12434/j.issn.2097-2547.20240503.

CAO Yuan,HE Yang,LIU Yufei,et al.Effects of preparation methods of Cu-Mn catalysts on catalytic performances of acetophenone hydrogenation to phenylethanol[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20240503.

摘要

苯乙醇作为重要的化工原料，可由苯乙酮催化加氢反应制备。然而，目前使用的苯乙酮加氢制苯乙醇催化剂存在产物选择性较低、稳定性较差和成本较高等问题。分别采用熔融法和共沉淀法制备了Cu-Mn催化剂（Cu-MnO

-MT和Cu-MnO

-CP），催化剂的结构经XRD和H

-TPR等表征。研究了催化剂的催化性能，并优化了反应条件。结果表明，与Cu-MnO

-CP相比，Cu-MnO

-MT具有更丰富的氧空位活性位点，这有利于增强表面氧的迁移，提高苯乙酮在催化剂表面的吸附能，降低反应能垒，促进苯乙酮活化，从而提高苯乙酮转化率。在反应温度为100 ℃、反应压力为2.5 MPa、苯乙酮液时空速为1.8 h

-1

和

(苯乙酮)为15:1的最优条件下反应8 h，Cu-MnO

-MT表现出更好的催化性能，其苯乙酮转化率为99.75%，苯乙醇选择性为99.83%。此外，Cu-MnO

-MT在最优反应条件下连续反应40 h，其苯乙酮转化率维持在99%以上。

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-MnO

-MT and Cu-MnO

-CP) were prepared by melting method and co precipitation method

respectively. The structures of catalysts were characterized by XRD

-TPR

etc. The catalytic performances of catalysts were studied and the reaction conditions were optimized. The results show that compared with Cu-MnO

-CP

Cu-MnO

-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. Reaction under the optimal conditions of reaction temperature of 100 ℃

reaction pressure of 2.5 MPa

liquid space velocity of 1.8 h

-1

and

(acetophenone) of 15:1 for 8 h

Cu-MnO

-MT exhibits better catalytic performance with the acetophenone conversion rate of 99.75% and phenylethanol selectivity of 99.83%. In addition

continuously reacion under optimal reaction conditions for 40 h

the acetophenone conversion rate of Cu-MnO

-MT remains above 99%.

关键词

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references

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