Selective Conversion of CO2 to Isobutane-enriched C4 alkanes over InZrOx-Beta Composite Catalyst
收藏科学数据银行2023-04-19 更新2026-04-23 收录
下载链接：
https://www.scidb.cn/detail?dataSetId=f17bf89c7c36435eb462079e730cc018
下载链接
链接失效反馈官方服务：
资源简介：
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.
提供机构：
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences; University of Chinese Academy of Sciences
创建时间：
2023-04-16
