First comparison of catalytic CO2 reduction to CO over molybdenum carbide, nitride and phosphide catalysts†
Zhiqiang
Zhang 
*a
and
Zhiwei
Yao
*ab
*a
and
Zhiwei
Yao
*ab
Abstract
Carbonization, nitridation and phosphorization of Mo/CNT precursors can lead to the formation of β-Mo2C, a γ-Mo2N/β-Mo2C mixture and MoP, respectively, on the CNT support. It was proposed that the γ-Mo2N phase showed better reverse water gas shift (RWGS) performance than the β-Mo2C and MoP phases, which can be due to its higher oxophilicity and weaker affinity with CO. Noticeably, this nitrided Mo/CNT catalyst showed comparable RWGS performance to bimetallic Cu/β-Mo2C (recently known to be the most excellent non-noble metal catalyst for the RWGS).
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