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Article Abstract
Direct conversion of CO to a single specific hydrocarbon with high selectivity is extremely attractive but very challenging. Herein, by employing an InZrO-Beta composite catalyst in the CO hydrogenation, a high selectivity of 53.4% to butane is achieved in hydrocarbons (CO free) under 315 °C and 3.0 MPa, at a CO conversion of 20.4%. Various characterizations and DFT calculation reveal that the generation of methanol-related intermediates by CO hydrogenation is closely related to the surface oxygen vacancies of InZrO, 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 InZrO-Beta in the CO hydrogenation is considerably improved by a surface silica protection strategy which can effectively inhibit the indium migration.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10164185 | PMC |
| http://dx.doi.org/10.1038/s41467-023-38336-5 | DOI Listing |
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