Decomposition of Hydrogen Sulfide in Non-Thermal Plasma Aided by Supported ZnxCd1-xS Solid Solutions
Y. Wang1, L. Zhao1, Z. Sun1, X. Li1, A. Wang1, C. Song1, 2, and Y. Hu1
1State Key Laboratory of Fine Chemicals, PSU-DUT Joint Center for Energy Research, School of Chemical Engineering, Dalian University of Technology, P.R. China
2EMS Energy Institute, Department of Energy and Mineral Engineering, the Pennsylvania State University, USA
Abstract- A series of ZnxCd1-xS solid solutions supported on Al2O3 were prepared, and investigated in the plasma-induced H2S decomposition. Structural and optical properties of the as-prepared catalysts were characterized by XRD, N2 physisorption, UV-vis, TEM and XPS techniques. All ZnxCd1-xS/Al2O3 catalysts showed relatively high activities for H2S decomposition. The catalytic activity is found to increase gradually when the Zn concentration on catalysts increases from 0.2 to 0.6. Subsequent increase in the Zn fraction up to 0.8 leads to lower H2S conversion. Variation in activity is discussed in terms of modification in the conduction band and light absorption ability of ZnxCd1-xS/Al2O3 derived from the changes in the Zn/Cd molar ratio.
Keywords- Hydrogen sulfide, hydrogen, solid solution, non-thermal plasma