YE Zhiyuan;RAO Na;XIA Changyou;LIU Shuo;LIANG Xi;

• 1:Guangdong CCUS Centre
• 2:Institute of Energy Research
• 3:Jiangxi Academy of Sciences
• 4:Ningxia Electric Power Design Institute

Abstract：

Methanol is a crucial organic raw material and fuel, particularly in the context of the climate and energy crisis. Developing a methanol economy is crucial to promoting a green, low-carbon transformation of the chemical, energy, and transportation sectors while ensuring a secure energy supply. A comprehensive overview of the CO_2 hydrogenation process routes to methanol was offered, including an analysis and summary of the performance of copper-based, indium-based, solid solution, and noble metal catalysts. The data show that the reaction conditions of all four types of catalysts are concentrated at 200-300 ℃ and 1.5-5.0 MPa. While copper-based catalysts were the most widely studied and applied, with a median CO_2 conversion and methanol selectivity of 13.6 and 69.2,respectively,indium-based catalysts and solid solution catalysts have comparable CO_2 conversion and methanol selectivity but exhibit better stability. The extreme values of CO_2 conversion and methanol selectivity for noble metal catalysts vary significantly, with limited data related to stability. Solid solution catalysts demonstrate exceptional catalytic performance and stability under industrial conditions, making them a promising catalyst type for large-scale application in the future. Furthermore, this paper provides an overview of existing CO_2 hydrogenation to methanol projects and technical routes both domestically and abroad. The number of carbon dioxide hydrogenation to methanol projects is increasing, with production capacities ranging from 4 000 t/a to 200 000 t/a. Industrial emission source CO_2 capture devices as the carbon source and electrolytic water as the primary source of hydrogen were primarily relied on. As the goal of carbon neutralization becomes increasingly critical, the CO_2 hydrogenation to methanol technology becomes even more vital. Therefore, it is recommended that research and development of CO_2 hydrogenation to methanol catalyst technology receive greater support, as well as industrial application of the project.

Key Words： CCUS;methanol;carbon utilization;catalyst;CO_2

Abstract:

Keywords:

Foundation: 宁夏回族自治区发展改革委资助项目(GDCCUS2022041901)

Authors: YE Zhiyuan;RAO Na;XIA Changyou;LIU Shuo;LIANG Xi;

DOI: 10.13226/j.issn.1006-6772.23030103

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