Biogas reforming over BaTi(1-x)Sn(x)03-supported Ni-based catalysts recovered from spent Ni-metal-hydride batteries

摘要

BaTi1-xSnxO3-supported Ni-based catalysts recovered from spent Ni-metal-hydride (NiMH) batteries [wNi/BaTi1-xSnxO3 (x = 0.0, 0.2, 0.4, 0.6, and 1.0)] were prepared. Their catalytic activities for model biogas reforming reactions were examined at 800 degrees C and compared with that of wNi/gamma-Al2O3. According to the results, wNi/BaTi0.8Sn0.2O3 exhibited high reforming performance and high sustainability among the catalysts tested. wNi/gamma Al2O3 exhibited unsustainability due to carbon deposition, although its performance was excellent for a short time. BaTi0.8Sn0.2O3 functioned as an inhibitor, depressing carbon deposition. This function was likely due to the mobile oxide ions and alkaline earth oxides in the catalyst supports. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.