CO₂ hydrogenation to acetic acid and methyl acetate via tandem catalysis.

ABSTRACT: Selective hydrogenation of CO₂ into high-value C₂₊ oxygenates, such as acetic acid (AA), methyl acetate (MA), and ethanol, is highly attractive yet remains a significant challenge. This study demonstrates an innovative tandem catalysis system for converting CO₂ to AA and MA, employing GaZrO_x and hydrophobically modified MOR-8-C1@PC (PTFE+CNTs) catalysts. The upstream GaZrO_x drives CO₂ hydrogenation to produce an effluent gas with a controlled CO/(DME + CH₃OH) ratio of approximately 4, facilitating the subsequent carbonylation reaction over the MOR-based catalyst. For the downstream catalyst, surface silanization of MOR zeolite combined with a hydrophobic promoter effectively prevents water (generated during CO₂ hy

SUBMITTER: Han S 

PROVIDER: S-EPMC12717239 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature