Al Promotion of In₂O₃ for CO₂ Hydrogenation to Methanol.

ABSTRACT: In₂O₃ is a promising catalyst for the hydrogenation of CO₂ to methanol, relevant to renewable energy storage in chemicals. Herein, we investigated the promoting role of Al on In₂O₃ using flame spray pyrolysis to prepare a series of In₂O₃-Al₂O₃ samples in a single step (0-20 mol % Al). Al promoted the methanol yield, with an optimum being observed at an Al content of 5 mol %. Extensive characterization showed that Al can dope into the In₂O₃ lattice (maximum ∼ 1.2 mol %), leading to the formation of more oxygen vacancies involved in CO₂ adsorption and methanol formation. The rest of Al is present as small Al₂O₃ domains at the In₂

SUBMITTER: Liu L 

PROVIDER: S-EPMC10728901 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature