Cu/MoX催化剂的RWGS反应催化性能研究

戴卉; 蒋洋洋; 周昌健

doi:10.12434/j.issn.2097-2547.20240238

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Cu/MoX催化剂的RWGS反应催化性能研究

C1化学与催化转化 | 更新时间：2025-02-27

- Cu/MoX催化剂的RWGS反应催化性能研究
- Study on catalytic performances of Cu/MoX catalysts in RWGS reaction
- 低碳化学与化工 2025, 50(2): 31-37.
- 作者机构：
  
  1.成都理工大学材料与化学化工学院（锂资源与锂电产业学院），四川成都 610059
  2.盐城工学院化学化工学院，江苏盐城 224051
- 作者简介：
  
  戴卉（1990—），博士，讲师，研究方向二氧化碳催化转化，E-mail：daihui18@cdut.edu.cn。
  周昌健（1990—），博士，讲师，研究方向非均相催化材料的制备及其性能，E-mail：zcj@ycit.cn。
- 基金信息：
  
  四川省自然科学基金(2023NSFC1103);成都理工大学教师发展启动基金(10912-KYQD2022-07266)
- DOI：10.12434/j.issn.2097-2547.20240238
  中图分类号： TQ426;O643
- 收稿日期：2024-05-28，
  
  修回日期：2024-07-17，
  
  纸质出版日期：2025-02-25
- 稿件说明：
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戴卉,蒋洋洋,周昌健.Cu/MoX催化剂的RWGS反应催化性能研究[J].低碳化学与化工,2025,50(02):31-37.

DAI Hui,JIANG Yangyang,ZHOU Changjian.Study on catalytic performances of Cu/MoX catalysts in RWGS reaction[J].Low-carbon Chemistry and Chemical Engineering,2025,50(02):31-37.
戴卉,蒋洋洋,周昌健.Cu/MoX催化剂的RWGS反应催化性能研究[J].低碳化学与化工,2025,50(02):31-37. DOI： 10.12434/j.issn.2097-2547.20240238.

DAI Hui,JIANG Yangyang,ZHOU Changjian.Study on catalytic performances of Cu/MoX catalysts in RWGS reaction[J].Low-carbon Chemistry and Chemical Engineering,2025,50(02):31-37. DOI： 10.12434/j.issn.2097-2547.20240238.

摘要

逆水煤气变换（RWGS）反应不仅能够实现CO

转化，也是该转化过程生产CO的关键步骤，开发高效的RWGS催化剂具有重要意义。MoO

具有一定的RWGS催化活性，但存在CO

转化率低、活化反应温度偏高等问题。Cu具有良好的CO

催化加氢活性，常作为CO

加氢催化剂的活性相，在RWGS领域具有良好的应用前景。利用共沉淀法制备了Cu/MoCe、Cu/MoTi和Cu/MoGa催化剂，通过表征分析和活性测试对催化剂的物化性质及构效关系进行了探究。结果表明，在反应温度为500 ℃、

(CO

)为4:1和空速为30000 mL/(g·h)时，Cu/MoCe催化剂活性相对最高，CO收率为47.9%。Cu/MoCe催化剂中更小的固溶体相CuMoO

晶粒尺寸、载体中形成的Ce-O-Mo不对称氧空位、Ce

/Ce

离子对之间的氧化还原循环，以及氧空位与活性相之间的协同作用共同促进了RWGS反应，使Cu/MoCe催化剂展现出较好的催化活性，为RWGS催化剂设计提供了新思路。

Abstract

The reverse water gas shift (RWGS) reaction can not only achieve CO

conversion

but also be a key step in the process to produce CO

and it is of great significance to develop efficient RWGS catalysts. MoO

can catalyze RWGS reaction

but it has the problems of low CO

conversion rate

high activation temperature

etc. Cu has good C

catalytic hydrogenation activity

and is often used as the active phase of CO

hydrogenation catalysts

which has a great application prospect in the field of RWGS. Cu/MoCe

Cu/MoTi and Cu/MoGa catalysts were prepared by co-precipitation

and the physicochemical properties and configuration-activity relationships of the catalysts were explored through characterization and activity testing. The results show that Cu/MoCe catalyst has the highest activity with the CO yield of 47.9% at the reaction temperature of 500 ℃

(CO

) of 4:1 and the space velocity of 30000 mL/(g·h). The smaller grain size of the solid solution phase CuMoO

in Cu/MoCe catalyst

the formation of Ce-O-Mo asymmetric oxygen vacancies in the supports

the redox cycle between Ce

/Ce

ion pairs and the synergistic effect between oxygen vacancies and active phases jointly promote the RWGS reaction

which make Cu/MoCe catalyst exhibits great catalytic activity and provides a new idea for the design of RWGS catalysts.

关键词

Keywords

references

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