Reverse water gas-shift reaction product driven dynamic activation of molybdenum nitride catalyst surface.

ABSTRACT: In heterogeneous catalysis catalyst activation is often observed during the reaction process, which is mostly attributed to the induction by reactants. In this work we report that surface structure of molybdenum nitride (MoN_x) catalyst exhibits a high dependency on the partial pressure or concentration of reaction products i.e., CO and H₂O in reverse water gas-shift reaction (RWGS) (CO₂:H₂ = 1:3) but not reactants of CO₂ and H₂. Molybdenum oxide (MoO_x) overlayers formed by oxidation with H₂O are observed at reaction pressure below 10 mbar or with low partial pressure of CO/H₂O products, while CO-induced surface carbonization happens at reaction pressure above 100 mbar and with high partial pr

SUBMITTER: Xin H 

PROVIDER: S-EPMC11271606 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature