Stoichiometric Selective Carbonylation of Methane to Acetic Acid by Chemical Looping.

ABSTRACT: The conversion of methane to valuable products is one of the main challenges of modern chemistry. Acetic acid (AcOH) is a key chemical reagent in industry, produced nowadays by the carbonylation of methanol over homogeneous Rh and Ir catalysts. Here, we propose a stepwise chemical looping approach for the highly selective stoichiometric synthesis of AcOH by carbonylation of methane with CO using single-site Pt over isolated phosphotungstic anions on a titania support (Pt-HPW-TiO₂). The reaction proceeds by methane activation, which coincides with the reduction of initially oxidized Pt species in the presence of CO at 423 K and results in surface acetates attached to TiO₂. Subsequent hydrolysis by water at ambient temperature results in the synthesis of AcOH in a stoic

SUBMITTER: Wang Y 

PROVIDER: S-EPMC11851441 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature