2026-10-13T17:22:22Z https://www.scidb.cn/oai

10.57760/sciencedb.07972 2023-04-19T09:19:36Z

2023-04-19 Selective Conversion of CO2 to Isobutane-enriched C4 alkanes over InZrOx-Beta Composite Catalyst doi:10.57760/sciencedb.07972 en Direct conversion of CO2 to a single specific hydrocarbon with high selectivity is extremely attractive but very challenging. Herein, by employing an InZrOx-Beta composite catalyst in the CO2 hydrogenation, we achieved a high selectivity of 53.4% to butane in hydrocarbons (CO free) under 315 °C and 3.0 MPa, at a CO2 conversion of 20.4%. Various characterizations and DFT calculation reveal that the generation of methanol-related intermediates by CO2 hydrogenation is closely related to the surface oxygen vacancies of InZrOx, which can be tuned through modulating the preparation methods. In contrast, the three-dimensional 12-ring channels of H-Beta conduces to forming higher methylbenzenes and methylnaphthalenes containing isopropyl side-chain, which favors the transformation of methanol-related intermediates to butane through alkyl side-chain elimination and subsequent methylation and hydrogenation. Moreover, the catalytic stability of InZrOx-Beta in the CO2 hydrogenation is considerably improved by a surface silica protection strategy which can effectively inhibit the indium migration. CO2; butane; InZrOx Wang Han Fan Sheng Guo Shujia Wang Sen Qin Zhangfeng Dong Mei Zhu Huaqing Fan Weibin Wang Jianguo PUBLIC https://creativecommons.org/licenses/by-nc-nd/4.0/ dataset http://www.doi.org/10.1038/s41467-023-38336-5 Science Data Bank