Finding of a new cycle route in Ni/Mo2C catalyzed CH4-CO2 reforming

Oxidation-recarburization cycle has become an important reaction mechanism in various Ni/Mo2C catalyzed reactions. In the cycle, Mo2C usually undergoes structure transformation (Mo2C <-> MoO2), while the Ni phase always remains unchanged. In the present study, we have found a new cycle route involving Ni, viz. Ni/Mo2C <-> MoNi4, in a Ni/Mo2C catalyzed CH4-CO2 reforming reaction. The formation rate of MoNi4 has a significant impact on the reaction proceeding. Once MoNi4 is formed in large quantities, the catalytic cycle will slow down sharply until it stops.

Automated summary

The oxidation-recarburization cycle is an important reaction mechanism in various Ni/Mo2C catalyzed reactions, where Mo2C undergoes structure transformation and Ni phase remains unchanged. A new cycle route involving Ni, Ni/Mo2C <-> MoNi4, has been discovered to impact the reaction proceeding significantly, with the formation rate of MoNi4 influencing the catalytic cycle speed.