TITLE:
Effect of Substitution Degree and the Calcination Temperature on the N2O Decomposition over Zinc Cobaltite Catalysts
AUTHORS:
B. M. Abu-Zied, S. A. Soliman, S. E. Abdellah
KEYWORDS:
Greenhouse Gases, Nitrous Oxide, N2O Decomposition, Znx-Co1-xCo2O4, Zinc Cobaltite, Spinel Oxide
JOURNAL NAME:
Modern Research in Catalysis,
Vol.6 No.1,
January
22,
2017
ABSTRACT:
In this paper, a series of zinc cobaltite catalysts with the general formula Znx-Co1-xCo2O4 (x = 0.25, 0.50, 0.75 and 1.0) has been prepared using the co-precipitation method. Thermal analyzes (TGA and DTA) were used to follow up the thermal events accompanying the heat treatment of the parent mixture. Based on these results, the various parent mixtures were calcined at 500℃. The obtained solid catalysts were characterized by using XRD, FT-IR and N2-adsorption. The catalytic decomposition of N2O to N2 and O2 was carried out on the zinc-cobaltite catalysts. It was found that partial replacement of Co2+ by Zn2+ in Co3O4 spinel oxide led to a significant improvement in their N2O decomposition activity. Moreover, the catalytic activity was found to be depended on the calcination temperature utilized.