Insight into the Nature of the ZnO _x Promoter during Methanol Synthesis.

ABSTRACT: Despite the great commercial relevance of zinc-promoted copper catalysts for methanol synthesis, the nature of the Cu-ZnO _x synergy and the nature of the active Zn-based promoter species under industrially relevant conditions are still a topic of vivid debate. Detailed characterization of the chemical speciation of any promoter under high-pressure working conditions is challenging but specifically hampered by the large fraction of Zn spectator species bound to the oxidic catalyst support. We present the use of weakly interacting graphitic carbon supports as a tool to study the active speciation of the Zn promoter phase that is in close contact with the Cu nanoparticles using time-resolved X-ray absorption spectroscopy under working conditions. Without an oxidic support, m

SUBMITTER: Dalebout R 

PROVIDER: S-EPMC9171830 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature