Temperature Effect on Hydrogen Production from Reactions between Ethanol and Steam in the Presence of Pd-Ru/Nb2O5-TiO2 Catalyst

Abstract

Temperature effect on the performance of Pd-Ru/Nb2O5-TiO2 (PRNT) catalyst on hydrogen production from reactions between ethanol and steam was evaluated. Parallel reactions occurred in all conditions studied according to what was observed by the presence of H2, CO2, CH4, CO, C2H4, C2H6, C2H4O and (C2H5)2O. While at 300 °C the process seems to be dominated by ethanol dehydrogenation and decomposition, at 375 °C dehydration it seems to compete for active sites with ethanol dehydrogenation and decomposition reactions. At 450 °C there is a dehydration reaction to ethane, basically competing at the same level with ethanol dehydrogenation decomposition reactions. Hydrogen production on PRNT catalyst is maximized at 300 °C.

Catalysis in Liquid Organic Hydrogen Storage: Recent Advances, Challenges, and Perspectives

“…Finally, the WGS reaction takes place to produce additional H 2 and CO 2 . Similarly, Pd was found to exhibit suitable catalytic 250,257,273,274,279,280 However, in this case, the selectivity is lower compared to Rh. 281 Recently, Ir-based catalysts have been demonstrated to have strong catalytic properties for ESR due to the strong interaction between Ir and their supports along with the optimal C−C bond capacities of Ir sites.…”

“…Finally, the WGS reaction takes place to produce additional H 2 and CO 2 . Similarly, Pd was found to exhibit suitable catalytic properties for ethanol SR when supported on Al 2 O 3 , CeO 2 , ZrO 2 , MgO, zeolites, and carbons. ,,,,, However, in this case, the selectivity is lower compared to Rh …”