Comparative study of hydrogen production from steam reforming of acetic acid over synthesized catalysts via MOF and wet impregnation methods

This study focuses on acetic acid steam reforming (AASR) for the production of hydrogen over synthesized a complex catalyst via metal-organic framework (MOF) process supported on Al2O3/La2O3/CeO2 (ALC) named Ni-Complex/ALC. The catalytic activity and stability of the synthesized catalyst compared with a catalyst of the same composition prepared using nickel format precursor via wet impregnation wetness method. Catalytic reaction was tested for both catalysts under atmospheric pressure at different temperatures ranging from 300 to 650 degrees C, with S/C ratio = 6.5 and weight hour space velocity (WHSV) 1.05 h(-1). Acetic acid conversion and product distribution were observed for 36 h of reaction. The results showed that activity of the catalyst prepared using MOF process showed a better yield towards hydrogen production and stability against coke deposition due to regular pore structure and more amount of oxygen molecules available present on the surface. The yield of H-2 was found to be approx. 90%, i.e., close to the theoretical stoichiometric limit. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.