Izvorni znanstveni članak
https://doi.org/10.15255/CABEQ.2014.2133
Catalytic Activities of Transition Metal Phosphides for NO Dissociation and Reduction With CO
Z. Yao
; a)College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Liaoning, PR China 113001; b)Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China
X. Qiao
; College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Liaoning, PR China 113001
D. Liu
; College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Liaoning, PR China 113001
Y. Shi
; College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Liaoning, PR China 113001
Y. Zhao
; College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Liaoning, PR China 113001
Sažetak
A series of metal phosphides (MoP, WP, Co2P, Fe2P and Ni2P) were synthesized byH2-temperature-programmed reduction method. Amongst these phosphides, Fe2P was found to show a considerably higher activity for NO dissociation than other phosphides. Herein, it was firstly used as a catalyst for NO reduction with CO. Although the Fe2P catalyst showed an excellent activity for NO conversion to N2, there was a competition between NO reduction by CO and Fe2P oxidation by oxygen originated from NO dissociation. A complete equality of NO conversion and NO reduction degree can be obtained
after increasing CO concentration in the system, which demonstrated that a catalytic redox cycle can be established on Fe2P catalyst, and hence in-situ oxidation of bulk Fe2P was avoided.
Ključne riječi
Fe2P; NO reduction; NO dissociation; catalytic redox cycle; bulk oxidation
Hrčak ID:
150641
URI
Datum izdavanja:
3.1.2016.
Posjeta: 1.243 *