CIESC Journal ›› 2025, Vol. 76 ›› Issue (8): 4042-4051.DOI: 10.11949/0438-1157.20250229

• Catalysis, kinetics and reactors • Previous Articles     Next Articles

Ga2O3 modified CuCeO catalysts for CO2 hydrogenation to methanol

Yuntao ZHOU1,2(), Lifeng CUI2, Jie ZHANG2, Fuhong YU2, Xingang LI1, Ye TIAN1()   

  1. 1.School of Chemical Engineering & Technology, Tianjin University, Tianjin 300354, China
    2.Shandong Hualu Hengsheng Chemical Co. , Ltd. , Dezhou 253024, Shandong, China
  • Received:2025-03-10 Revised:2025-04-08 Online:2025-09-17 Published:2025-08-25
  • Contact: Ye TIAN

Ga2O3调控CuCeO催化CO2加氢制甲醇的研究

周运桃1,2(), 崔丽凤2, 张杰2, 于富红2, 李新刚1, 田野1()   

  1. 1.天津大学化工学院,天津 300354
    2.山东华鲁恒升化工股份有限公司,山东 德州 253024
  • 通讯作者: 田野
  • 作者简介:周运桃(1988—),男,博士,zhouyuntao1005@163.com
  • 基金资助:
    国家重点研发计划项目(2022YFB4101800);山东省重点研发计划项目(2024CXGC010410)

Abstract:

It is an effective way to mitigate global warming and achieve carbon resources reuse by CO2 hydrogenation to methanol. Cu/CeO2 is an important catalyst for CO2 hydrogenation to methanol, but the methanol selectivity still needs to be further improved. In this work, the xGaCuCeO catalysts with different amounts of Ga2O3 were prepared to modify its catalytic activities. The results show that Ga2O3 enhances the adsorption strength of CO2 on the catalyst surface and increases the oxygen vacancy content on the catalyst surface, thereby improving the methanol selectivity of xGaCuCeO catalysts. Compared with the CuCeO catalyst, the 0.07GaCuCeO catalyst with Ga content of 1.1% (mass) has increased the selectivity of methanol by 47% and space-time yield by 26% (22.4 g·kg-1·h-1).

Key words: carbon dioxide, hydrogenation, synthesis of methanol, selectivity

摘要:

CO2加氢制甲醇是缓解全球气候变暖、实现碳资源再利用的有效途径。Cu/CeO2催化剂是CO2加氢制甲醇的一类重要催化剂,但其甲醇选择性仍有待进一步提高。本文通过引入不同含量的Ga2O3制备了xGaCuCeO催化剂,以调控其甲醇选择性。研究结果显示,Ga2O3增强了催化剂表面CO2的吸附强度,提高了催化剂表面氧空位含量,从而提高了xGaCuCeO催化剂的甲醇选择性。在260℃和3.0 MPa条件下,与CuCeO催化剂相比,Ga含量为1.1% (质量分数)的0.07GaCuCeO催化剂的甲醇选择性提高了47%,时空产率提高了26% (22.4 g·kg-1·h-1)。

关键词: 二氧化碳, 加氢, 合成甲醇, 选择性

CLC Number: