Bifunctionality of Re Supported on TiO₂ in Driving Methanol Formation in Low-Temperature CO₂ Hydrogenation.

ABSTRACT: Low temperature and high pressure are thermodynamically more favorable conditions to achieve high conversion and high methanol selectivity in CO₂ hydrogenation. However, low-temperature activity is generally very poor due to the sluggish kinetics, and thus, designing highly selective catalysts active below 200 °C is a great challenge in CO₂-to-methanol conversion. Recently, Re/TiO₂ has been reported as a promising catalyst. We show that Re/TiO₂ is indeed more active in continuous and high-pressure (56 and 331 bar) operations at 125-200 °C compared to an industrial Cu/ZnO/Al₂O₃ catalyst, which suffers from the formation of methyl formate and its decomposition to carbon monoxide. At lower temperatures, precise understanding an

SUBMITTER: Phongprueksathat N 

PROVIDER: S-EPMC10442859 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature