Synthesis of Cu/Fe/Ti/Al2O3 Composite Granules for SO3 Decomposition in SI Cycle

Abstract

The present paper deals with the catalytic decomposition of SO 3 reaction. Cu/Fe/Ti/Al 2 O 3 composite granule catalysts prepared by a combination of Yoldas process and oil-drop method were studied in an attempt to find some suitable catalysts for the decomposition of sulfur trioxide as the oxygen-generating reaction in the thermochemical water splitting process. CuFe/Ti:Al-1:2 shows high SO 3 conversion (69%) at 800°C compared with other catalysts because of the high surface area and the support permitted a better dispersion of Ti.

O-Vacancy Mediated Partially Inverted Ferrospinels for Enhanced Activity in the Sulfuric Acid Decomposition for Hydrogen Production

“…In order to develop a highly active and thermally stable catalyst, several efforts have been made in the past using precious metal groups, transition metal oxides, and complex metal oxides (perovskites and spinels). − Among all, supported transition metal oxides and complex metal oxides are found to be potential alternatives to precious metal oxides due to their low cost and better stability. ,− Although platinum-based catalysts are better catalysts, metal loss is one of the major concerns. , In this regard, transition-metal-oxide-based catalysts supported over SiO 2 , Al 2 O 3 , and other support materials have been extensively explored in the literature and shown to be potential candidates for sulfuric acid decomposition. ,,, However, these transition metal oxides exhibit poor thermal stability. Therefore, complex metal oxides such as perovskites and spinels seem to be a better alternative to platinum-based catalysts due to their high thermal stability, particularly at high temperatures.…”

O-vacancy Mediated Partially Inverted Ferrospinels for Enhanced Activity in the Sulfuric Acid Decomposition for Hydrogen Production

“…This SO3 decomposition step (also known as the oxygen-evolving step) is energy-intensive and requires a highly active and stable catalyst to decompose SO3 into SO2 and O2. 23,24 In order to develop a highly active and thermally stable catalyst, several efforts have been made in the past using precious metal groups, transition metal oxides, and complex metal oxides (perovskites and spinels) [25][26][27][28][29][30][31] . Among all, supported transition metal oxides and complex metal oxides are found to be potential alternatives to precious metal oxides due to their low cost and better stability 25,[32][33][34] .…”