One-Step Synthesis of Methanol from CH 4 and CO 2 by a Plasma Synergistic Catalyst

作者：Chong Qi, Yifu Bi, Hong Yu, Haonan Zhang, Qinhua Zhang, Xinyu Wang, Mengyao Fan, Tao Xing, Mingqing Wang, Mingbo Wu, Wenting Wu · 发表于：Industrial & Engineering Chemistry Research · 年份：2024 · DOI：10.1021/acs.iecr.3c03831 · 被引用次数：6 · 研究领域：Catalytic Processes in Materials Science、CO2 Reduction Techniques and Catalysts、Advanced Photocatalysis Techniques

Direct conversion of CH 4 and CO 2 into liquid products such as methanol and ethanol at room temperature and pressure is of great significance and presents considerable challenges. Water-cooled dielectric barrier reactor (DBD) is a very promising technology. It can not only effectively activate CH 4 and CO 2 at room temperature and pressure but also reduce the temperature of the reaction zone and increase the life of free radicals. By the addition of appropriate catalysts, the distribution of liquid products can be precisely regulated, so as to achieve the goal of direct conversion of CH 4 and CO 2 into liquid products. Iron is an ideal choice for catalyst design due to its excellent CO 2 activation and OH radical enrichment ability. In this article, we designed a highly active Fe 2 O 3 /g-C 3 N 4 catalyst for the one-step conversion of CH 4 /CO 2 into liquid products in a DBD reactor. The conversion of CH 4 and CO 2 can reach 22% and 18%, respectively, and the selectivity of the liquid product can reach 40.1%. In liquid products, the selectivity of alcohol liquid products can reach 35%, of which methanol can reach 24.4%, which is higher than the 11.9% reported in the literature.