Recent Advances Hydrogenation of Carbon Dioxide to Light Olefins over Iron-Based Catalysts via the Fischer–Tropsch Synthesis
Jiangtao Liu, Yongchun Zhang, Chong Peng
Abstract
High Resolution Image Download MS PowerPoint Slide The massive burning of fossil fuels has been important for economic and social development, but the increase in the CO 2 concentration has seriously affected environmental sustainability. In industrial and agricultural production, light olefins are one of the most important feedstocks. Therefore, the preparation of light olefins by CO 2 hydrogenation has been intensively studied, especially for the development of efficient catalysts and for the application in industrial production. Fe-based catalysts are widely used in Fischer–Tropsch synthesis due to their high stability and activity, and they also exhibit excellent catalytic CO 2 hydrogenation to light olefins. This paper systematically summarizes and analyzes the reaction mechanism of Fe-based catalysts, alkali and transition metal modifications, interactions between active sites and carriers, the synthesis process, and the effect of the byproduct H 2 O on catalyst performance. Meanwhile, the challenges to the development of CO 2 hydrogenation for light olefin synthesis are presented, and future development opportunities are envisioned.