Effects of Al component contents on performances of CuZnAl catalysts for CO hydrogenation to ethanol and higher alcohols

GAO Mengdi; WU Luyao; HAO Jiarong; HUANG Wei

doi:10.12434/j.issn.2097-2547.20240101

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Effects of Al component contents on performances of CuZnAl catalysts for CO hydrogenation to ethanol and higher alcohols

- Effects of Al component contents on performances of CuZnAl catalysts for CO hydrogenation to ethanol and higher alcohols
- Vol. 49, Issue 8, Pages: 28-37(2024)
- 作者机构：
  
  太原理工大学化学与化工学院省部共建煤基能源清洁高效利用国家重点实验室，山西太原 030024
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240101
  CLC： TQ426;TQ223.1
- Published：25 August 2024，
  
  Received：12 March 2024，
  
  Revised：28 April 2024，
- 稿件说明：
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高梦迪,武璐瑶,郝家荣等.Al组分含量对CuZnAl催化剂CO加氢制乙醇和高级醇性能影响[J].低碳化学与化工,2024,49(08):28-37.

GAO Mengdi,WU Luyao,HAO Jiarong,et al.Effects of Al component contents on performances of CuZnAl catalysts for CO hydrogenation to ethanol and higher alcohols[J].Low-carbon Chemistry and Chemical Engineering,2024,49(08):28-37.
高梦迪,武璐瑶,郝家荣等.Al组分含量对CuZnAl催化剂CO加氢制乙醇和高级醇性能影响[J].低碳化学与化工,2024,49(08):28-37. DOI： 10.12434/j.issn.2097-2547.20240101.

GAO Mengdi,WU Luyao,HAO Jiarong,et al.Effects of Al component contents on performances of CuZnAl catalysts for CO hydrogenation to ethanol and higher alcohols[J].Low-carbon Chemistry and Chemical Engineering,2024,49(08):28-37. DOI： 10.12434/j.issn.2097-2547.20240101.

摘要

随着原油储量的减少和环境问题的加剧，迫切需要寻找生产燃料和化学品的新技术。Cu基催化剂是合成气直接制乙醇和高级醇（C

醇）的重要催化剂之一，但存在目标产物选择性低的问题。采用完全液相法制备了一系列不同Al组分含量（

(Al)/

(Zn)计）的CuZnAl催化剂（Cat-Al

），结合X射线衍射、N

吸/脱附和H

-程序升温还原等对催化剂的物相组成、织构性质和还原性能等进行了表征。在模拟浆态床反应器中研究了Cat-Al

对CO加氢制乙醇和C

醇反应的催化性能。结果表明，Cat-Al0.8表面具有最丰富的Cu

物种以及较多的氧空位，表现出相对最优的催化性能。在280 ℃、4 MPa和

(CO) = 2/1的条件下反应24 h，Cat-Al0.8的CO转化率为18.45%，总醇选择性为30.34%，乙醇在总醇中的占比为30.19%，C

醇在总醇中的占比为48.08%。

Abstract

With the decrease of crude oil reserves and the aggravation of environmental problems

it is urgent to find new technologies for producing fuels and chemicals. Cu-based catalyst is one of the important catalysts for the direct synthesis of ethanol and higher alcohols (C

alcohols) from syngas

but it has the problem of low selectivity for target products. A series of CuZnAl catalysts (Cat-Al

) with different Al component contents (

(Al)/

(Zn)) were prepared b

y the complete liquid-phase method. The phase compositions

texture properties and reduction properties of the catalysts were characterized by X-ray diffraction

adsorption/desorption and H

-programmed temperature reduction

etc. The catalytic performances of Cat-Al

for CO hydrogenation to ethanol and C

alcohols were studied in a simulated slurry bed reactor. The results show that Cat-Al0.8 has the most abundant Cu

species and more oxygen vacancies on its surface

showing relatively optimal catalytic performance. Reaction under the conditions of 280 ℃

4 MPa and

(CO) = 2/1 for 24 h

the CO conversion rate of Cat-Al0.8 is 18.45%

and the total alcohols selectivity is 30.34%

and the proportion of ethanol in the total alcohols is 30.19%

and the proportion of C

alcohols in the total alcohols is 48.08%.

关键词

Al组分含量CuZnAl催化剂完全液相法乙醇高级醇

Keywords

Al component contentsCuZnAl catalystscomplete liquid-phase methodethanolhigher alcohols

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Related Author

GAO Mengdi

WU Luyao

HAO Jiarong

HUANG Wei

JI Jian-fei

MENG Yuan-yuan

LI Tian-shan

FANG Ke-gong

Related Institution

State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology

College of Chemistry and Chemical Engineering, Taiyuan University of Technology

Institute of Coal Chemistry, Chinese Academy of Sciences

Key Laboratory of Coal Science and Technology of Education and Shanxi Province, Taiyuan University of Technology

State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology

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