Zn、Al负载Cu/SiO<sub>2</sub>催化环己醇脱氢制环己酮的性能研究

段姣杰; 王明义; 张贵珠; 丁传敏; 王俊文

doi:10.12434/j.issn.2097-2547.20250049

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Zn、Al负载Cu/SiO₂催化环己醇脱氢制环己酮的性能研究

低碳分子转化合成 | 更新时间：2025-12-25

- Zn、Al负载Cu/SiO₂催化环己醇脱氢制环己酮的性能研究
- Study on catalytic performances of Zn and Al loaded Cu/SiO₂ for dehydrogenation of cyclohexanol to cyclohexanone
- 低碳化学与化工 2025, 50(12): 66-74.
- 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：
  
  段姣杰（1998—），硕士研究生，研究方向为环己醇脱氢催化，E-mail：2227377975@qq.com。
  王明义（1990—），博士，讲师，研究方向为煤焦油催化转化，E-mail：wangmingyi@tyut.edu.cn。
- 基金信息：
  
  国家自然科学基金(22308244)
- DOI：10.12434/j.issn.2097-2547.20250049
  中图分类号： TQ23
- 收稿：2025-02-10，
  
  修回：2025-03-25，
  
  纸质出版：2025-12-25
- 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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Zn、Al负载Cu/SiO2催化环己醇脱氢制环己酮的性能研究

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

Zn、Al负载Cu/SiO₂催化环己醇脱氢制环己酮的性能研究

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