Affiliation:
1. School of Energy Science and Engineering Central South University Changsha 410083 China
2. State Key Laboratory of Catalytic Materials and Reaction Engineering Research Institute of Petroleum Processing SINOPEC Beijing 100083 China
3. Department of Chemical Engineering University of Minnesota Duluth MN 55812 USA
Abstract
AbstractThe technology of steam reforming of bioethanol has drawn great attention to green hydrogen production. However, catalyst deactivation has always been a significant obstacle to its applications. Here, a series of yNi/Mo2TiC2Tx (yNi/MTC) materials are tailored as robust catalysts for highly efficient long‐term ethanol reforming. The results reveal that hydrogen utilization efficiency of up to 95.6% and almost total ethanol conversion can be achieved at 550 °C using a 10Ni/MTC‐72h catalyst. Moreover, this catalyst has remarkable stability without obvious deactivation after 100 h of bioethanol reforming, which can be attributed to the formation of a Ni─Mo alloy and the strong interaction of the Ni‐Mom‐Mo2‐mTiC2Tx structure. The FTIR‐MS studies demonstrate the superiority of the 10Ni/MTC‐72h catalyst for reinforcing low‐temperature bioethanol activation, as verified by the faster conversion of acetate species than with Ni/Al2O3. The adsorption energies of ethanol on the surface of Ni (−1.07 eV) and Ni/MTC (−1.46 eV) are compared by density functional theory calculations and show the superiority of the Ni/MTC catalyst for activating ethanol during steam reforming. This study provides new implications for highly stabilized Ni‐Mom‐Mo2‐mTiC2Tx construction, which is expected to substantially promote the development and application of bioethanol‐to‐hydrogen production technologies.
Funder
National Natural Science Foundation of China
Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
Natural Science Foundation of Hunan Province
Subject
General Materials Science,Renewable Energy, Sustainability and the Environment
Cited by
9 articles.
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