Mg掺杂Cu/SiO<sub>2</sub>催化剂制备及其甲醇和乙醇合成异丁醛催化性能研究

王文玉; 王馨艺; 王康军; 刘蝈蝈

doi:10.12434/j.issn.2097-2547.20240357

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Mg掺杂Cu/SiO₂催化剂制备及其甲醇和乙醇合成异丁醛催化性能研究

C1化学与催化转化 | 更新时间：2025-04-27

- Mg掺杂Cu/SiO₂催化剂制备及其甲醇和乙醇合成异丁醛催化性能研究
- 暂无标题
- 低碳化学与化工 2025, 50(4): 38-45.
- 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：
  
  王文玉（1998—），硕士研究生，研究方向为低碳化工催化剂开发，E-mail：13804974730@163.com。
  刘蝈蝈（1988—），博士，副教授，研究方向为碳一化工催化剂开发及应用，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计划(2019YQ01)
- DOI：10.12434/j.issn.2097-2547.20240357
  中图分类号： TQ426.8
- 收稿日期：2024-08-28，
  
  修回日期：2024-09-22，
  
  纸质出版日期：2025-04-25
- 稿件说明：
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王文玉,王馨艺,王康军等.Mg掺杂Cu/SiO₂催化剂制备及其甲醇和乙醇合成异丁醛催化性能研究[J].低碳化学与化工,2025,50(04):38-45.

WANG Wenyu,WANG Xinyi,WANG Kangjun,et al.Study on preparation of Mg-doping Cu/SiO₂ catalyst and its catalytic synthesis performance of isobutyraldehyde from methanol and ethanol[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(04):38-45.
王文玉,王馨艺,王康军等.Mg掺杂Cu/SiO₂催化剂制备及其甲醇和乙醇合成异丁醛催化性能研究[J].低碳化学与化工,2025,50(04):38-45. DOI： 10.12434/j.issn.2097-2547.20240357.

WANG Wenyu,WANG Xinyi,WANG Kangjun,et al.Study on preparation of Mg-doping Cu/SiO₂ catalyst and its catalytic synthesis performance of isobutyraldehyde from methanol and ethanol[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(04):38-45. DOI： 10.12434/j.issn.2097-2547.20240357.

摘要

异丁醛作为重要的有机化工原料，可由甲醇和乙醇一步合成。目前异丁醛合成催化剂还不能实现甲醇和乙醇高效转化，且催化剂异丁醛选择性偏低，严重限制了甲醇和乙醇一步合成异丁醛工业化的发展，亟需开发高效稳定的异丁醛合成催化剂。采用蒸氨法制备了Cu/SiO

和

CuMg/SiO

催化剂，通过N

吸/脱附、H

-TPR、CO

-TPD、XRD、XPS和TEM等对催化剂物化性质进行了表征，考察了不同Mg掺杂量对

CuMg/SiO

催化剂一步合成异丁醛催化性能的影响。结果表明，Mg的掺杂不仅增大了催化剂表面碱性位点及Cu颗粒活性位点数量，还提高了活性组分Cu颗粒分散度，进而提高了乙醇转化率和异丁醛选择性。在常压、还原温度为320 °C、反应温度为360 °C、液时空速为1.42 h

-1

和

(甲醇):

(乙醇)为10:1的条件下，1CuMg/SiO

催化剂性能较好，乙醇转化率可达97.26%，异丁醛选择性为89.03%，且连续反应200 h后未见明显失活，具有较高的稳定性。

Abstract

Isobutylaldehyde

as an important organic chemical raw material

can be synthesized in one-step from methanol and ethanol. Currently

the catalysts used for isobutyraldehyde synthesis are unable to achieve the highly efficient conversion of methanol and ethanol

and selectivity of isobutyraldehyde is relatively low. This has seriously hampered the development of the industrialization of the one-step synthesis of isobutyraldehyde from methanol and ethanol. Hence

there is an urgent need to develop highly efficient and stable catalysts for isobutyral

dehyde synthesis. The Cu/SiO

and

CuMg/SiO

catalysts were prepared using the ammonia evaporation method. The physicochemical properties of these catalysts were characterized by N

adsorption/desorption

-TPR

-TPD

XRD

XPS and TEM. The impact of different Mg-doping amounts on the performance of the

CuMg/SiO

catalysts in the one-step synthesis of isobutyraldehyde was investigated. The results show that the Mg-doping not only increases the basic sites on the catalyst surface and the active sites of Cu particles but also enhances the dispersion degree of the active component Cu particles. As a result

it increases the conversion rate of ethanol and the selectivity of isobutyraldehyde. Under the conditions of normal pressure

reduction temperature of 320 ℃

reaction temperature of 360 ℃

liquid hourly space velocity of 1.42 h

-1

and

(methanol):

(ethanol) of 10:1

the 1CuMg/SiO

catalyst exhibits better performance

with the ethanol conversion rate can reach 97.26% and selectivity of isobutyraldehyde is 89.03%. Furthermore

no obvious deactivation is observed after continuous reaction for 200 h

indicating the catalyst has high stability.

关键词

Keywords

references

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DOI：10.12434/j.issn.2097-2547.20240357

摘要

Abstract

关键词

Keywords

references

Mg掺杂Cu/SiO₂催化剂制备及其甲醇和乙醇合成异丁醛催化性能研究