Study on catalytic performances of Zn and Al loaded Cu/SiO<sub>2</sub> for dehydrogenation of cyclohexanol to cyclohexanone

DUAN Jiaojie; WANG Mingyi; ZHANG Guizhu; DING Chuanmin; WANG Junwen

doi:10.12434/j.issn.2097-2547.20250049

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Study on catalytic performances of Zn and Al loaded Cu/SiO₂ for dehydrogenation of cyclohexanol to cyclohexanone

更新时间：2025-12-25

- Study on catalytic performances of Zn and Al loaded Cu/SiO₂ for dehydrogenation of cyclohexanol to cyclohexanone
- Vol. 50, Issue 12, Pages: 66-74(2025)
- 作者机构：
  
  太原理工大学化学与化工学院，山西太原 030024
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250049
  CLC： TQ23
- Received：10 February 2025，
  
  Revised：2025-03-25，
  
  Published：25 December 2025
- 稿件说明：
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段姣杰,王明义,张贵珠等.Zn、Al负载Cu/SiO₂催化环己醇脱氢制环己酮的性能研究[J].低碳化学与化工,2025,50(12):66-74.

DUAN Jiaojie,WANG Mingyi,ZHANG Guizhu,et al.Study on catalytic performances of Zn and Al loaded Cu/SiO₂ for dehydrogenation of cyclohexanol to cyclohexanone[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(12):66-74.
段姣杰,王明义,张贵珠等.Zn、Al负载Cu/SiO₂催化环己醇脱氢制环己酮的性能研究[J].低碳化学与化工,2025,50(12):66-74. DOI： 10.12434/j.issn.2097-2547.20250049.

DUAN Jiaojie,WANG Mingyi,ZHANG Guizhu,et al.Study on catalytic performances of Zn and Al loaded Cu/SiO₂ for dehydrogenation of cyclohexanol to cyclohexanone[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(12):66-74. DOI： 10.12434/j.issn.2097-2547.20250049.

摘要

Cu/SiO

具有良好的催化性能，在环己醇脱氢制环己酮中应用广泛。然而，该催化剂在高温下易出现烧结现象，导致活性组分团聚，使用寿命缩短。采用共沉淀法制备了不同Cu负载量（以CuO质量分数计）的Cu/SiO

，并进一步在Cu负载量为10.0%的Cu/SiO

基础上制备了Cu-Zn/SiO

、Cu-Al/SiO

和Cu-Zn-Al/SiO

。研究了催化剂在环己醇脱氢制环己酮中的催化性能，并采用XRD、N

吸/脱附等表征了催化剂晶体结构、织构性质等。结果表明，在反应温度为240 ℃、反应压力为1.01 × 10

Pa和空速为3.6 h

-1

的条件下反应4 h，Cu-Zn-Al/SiO

（

(CuO):

(ZnO):

(Al

) = 10:2:1）的催化性能最好，其环己醇转化率、环己酮选择性和环己酮产率分别为72.3%、98.3%和71.1%。同时，该催化剂在24 h内保持了催化性能稳定。在Cu/SiO

中引入ZnO能够抑制活性组分Cu的迁移和聚集，并改善Cu在还原过程中的分散性，延缓Cu晶粒长大；引入Al

可增强活性组分Cu与载体SiO

之间的相互作用，有助于提高催化剂的热稳定性。

Abstract

Cu/SiO

exhibits excellent catalytic performance and is widely used in dehydrogenation of cyclohexanol to cyclohexanone. H

owever

Cu/SiO

tends to sinter at high temperatures

leading to agglomeration of the active components and a shortened service life. Cu/SiO

with different Cu loadings (calculated by mass fraction of CuO) were prepared using the co-precipitation method. Based on Cu/SiO

with the Cu loading of 10.0%

Cu-Zn/SiO

Cu-Al/SiO

and Cu-Zn-Al/SiO

were further prepared. The catalytic performances of catalysts in dehydrogenation of cyclohexanol to cyclohexanone were studied. And the crystal structures and textural properties of catalysts were characterized by XRD and N

adsorption/desorption

etc. The results show that Cu-Zn-Al/SiO

(

(CuO):

(ZnO):

(Al

) = 10:2:1) exhibits the best catalytic performance with cyclohexanol conversion rate

cyclohexanone selectivity and cyclohexanone yield of 72.3%

98.3% and 71.1%

respectively

under the reaction conditions of reaction temperature of 240 °C

reaction pressure of 1.01 × 105 Pa and space velocity of 3.6 h-1 for 4 h

Additionally

the catalyst maintains stable catalytic performance over 24 h. The introduction of ZnO in Cu/SiO

can inhibit the migration and aggregation of the active component Cu

improves its dispersion during the reduction process and slows down Cu grain growth. The introduction of Al

can enhance the interaction between the active component Cu and the SiO

support

thereby improving thermal stability of the catalyst.

关键词

Keywords

references

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Related Author

DUAN Jiaojie

WANG Mingyi

ZHANG Guizhu

DING Chuanmin

WANG Junwen

SUN Yinggang

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XU Xiaoying

Related Institution

College of Chemical Engineering, Beijing University of Chemical Technology

China Shenhua Energy Company Limited

National Institute of Clean and Low-Carbon Energy

School of Chemistry & Chemical Engineering, Yancheng Institute of Technology

College of Materials and Chemistry & Chemical Engineering (College of Lithium Resources and Lithium Battery Industry), Chengdu University of Technology

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Study on catalytic performances of Zn and Al loaded Cu/SiO2 for dehydrogenation of cyclohexanol to cyclohexanone

DOI：10.12434/j.issn.2097-2547.20250049

摘要

Abstract

关键词

Keywords

references

Study on catalytic performances of Zn and Al loaded Cu/SiO₂ for dehydrogenation of cyclohexanol to cyclohexanone