Efficient Production of Liquefied Petroleum Gas from CO 2 Hydrogenation by Combining Fe–Al Bimetallic Catalyst with SSZ-13 Zeolite

作者：Bowei Meng, J. Nellie Liang, Lei Jiang, Miaohui Song, Bowen Jian, Zhihao Liu, Teng Li, Baojian Chen, Chufeng Liu, Hanyao Song, Pei‐Pei Zhang, Guangbo Liu, Jiancai Sui, Qiang Liu, Tao Li, Tao Xing, Dingcheng Liang, Bing Liang, Noritatsu Tsubaki · 发表于：ACS Catalysis · 年份：2025 · DOI：10.1021/acscatal.5c02333 · 被引用次数：8 · 研究领域：Catalysts for Methane Reforming、Catalytic Processes in Materials Science、Catalysis and Hydrodesulfurization Studies

Increasing the selectivity of target products is crucial for the CO 2 hydrogenation. However, it still remains challenging for the Fe-based catalysts due to the limitation of ASF distribution. Herein, the tandem catalyst composed of Fe–Al bimetallic and the modified SSZ-13 zeolite is constructed for the efficient conversion of CO 2 to liquefied petroleum gas. By balancing the CO 2 adsorption and the Fe carbonization, K–2FeAl with the Fe/Al of 2 exhibits the highest CO 2 conversion and light olefin selectivity. After further mixing with HSSZ-13 zeolite, the generated olefins perform cracking and hydrogenation reactions, thus concentrating the products in propane and butane. Therefore, the optimized system achieved 51.7% of liquefied petroleum gas at a CO 2 conversion of 47.3%, and the space-time yield reaches 141.1 g kg cat –1 h –1, which exceeds all of the reported traditional methanol-mediated catalysts. Our work provides guidance for realizing the combination of both high reaction rates and high product selectivity in Fe-based catalysts.