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Effects of preparation methods of Cu-Mn catalysts on catalytic performances of acetophenone hydrogenation to phenylethanol
- Low-Carbon Chemistry and Chemical Engineering Vol. 50, Issue 10, Pages: 27-35(2025)
- 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：
- 基金信息：
DOI：10.12434/j.issn.2097-2547.20240503
CLC： TQ426.8Received：19 December 2024，
Revised：2025-02-10，
Published：25 October 2025
- 稿件说明：
移动端阅览
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,2025,50(10):27-35.
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,2025,50(10):27-35.
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,2025,50(10):27-35. 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,2025,50(10):27-35. 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
x
-MT和Cu-MnO
x
-CP），通过XRD和H
2
-TPR等表征了催化剂的结构，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
x
-CP相比，Cu-MnO
x
-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
V
(H
2
):
V
(苯乙酮)为15:1的最优条件下反应8 h，Cu-MnO
x
-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
x
-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
x
-MT and Cu-MnO
x
-CP) were prepared by melting method and co precipitation metho
d
respectively. The structures of catalysts were characterized by XRD
H
2
-TPR
etc. The catalytic performances of catalysts were studied and the reaction conditions were optimized. The results show that compared with Cu-MnO
x
-CP
Cu-MnO
x
-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
(H
2
):
V
(acetophenone) of 15:1
Cu-MnO
x
-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-MnO
x
-MT remains above 99%.
关键词
Keywords
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