Issue 63, 2015

Enhancement of N2O catalytic decomposition over Ca modified Co3O4 catalyst

Abstract

A series of Ca modified Co3O4 catalysts with different Ca/Co molar ratios were synthesized by the co-precipitation method and applied to N2O catalytic decomposition. The experimental results showed that the performance of N2O catalytic decomposition was obviously enhanced by the addition of Ca into the Co3O4 catalyst. The Ca modified Co3O4 catalyst with Ca/Co molar ratio of 1 : 2 exhibited the highest catalytic performance and almost 100% N2O conversion was achieved at 400 °C. The characterization results showed that the addition of suitable calcium composition could promote the growth of the 111 crystal plane of Co3O4 and provide abundant surface oxygen on the surface of the catalyst. The kinetics studies confirmed that the activation energy of the Ca modified Co3O4 catalyst with Ca/Co molar ratio of 1 : 2 (Ea = 17.84 kJ mol−1) was lower than that of pure Co3O4 (Ea = 43.21 kJ mol−1), implying that the addition of Ca into the Co3O4 was beneficial to the catalytic decomposition of N2O.

Graphical abstract: Enhancement of N2O catalytic decomposition over Ca modified Co3O4 catalyst

Article information

Article type
Paper
Submitted
07 Mar 2015
Accepted
02 Jun 2015
First published
02 Jun 2015

RSC Adv., 2015,5, 51263-51270

Author version available

Enhancement of N2O catalytic decomposition over Ca modified Co3O4 catalyst

Q. Zhang, X. Tang, P. Ning, Y. Duan, Z. Song and Y. Shi, RSC Adv., 2015, 5, 51263 DOI: 10.1039/C5RA04062K

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