Selective conversion of CO₂ to isobutane-enriched C₄ alkanes over InZrO_x-Beta composite catalyst.

ABSTRACT: Direct conversion of CO₂ to a single specific hydrocarbon with high selectivity is extremely attractive but very challenging. Herein, by employing an InZrO_x-Beta composite catalyst in the CO₂ hydrogenation, a high selectivity of 53.4% to butane is achieved 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 InZrO_x, 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 isop

SUBMITTER: Wang H 

PROVIDER: S-EPMC10164185 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature