Renewable hydrogen production over Pt/Al_2O_3 nano-catalysts: Effect of M-promoting (M=Pd, Rh, Re, Ru, Ir, Cr)

摘要

Xwt% Pt/Al2O3 (X = 1, 3, 5, 8, 10) and 5 wt% Pt-1wt% M/AlO3 (M = Pd, Rh, Re, Ru, Ir, Cr) catalysts were prepared, characterized and tested for aqueous phase reforming of pure and crude glycerol. Results show drastic dependence of catalytic performance of catalysts on both the active metal loading and the type of applied promoters. 5 wt% was the best Pt loading and Pt-Rh/AlO3 shows the best catalytic activity which has the highest hydrogen production rate (mmol/g(cat) h(-1)) and selectivity (89%) in continuous aqueous phase reforming of 10 wt% pure glycerol solution. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.