期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 41, 页码 20904-20921出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.05.247
关键词
Hydrogen production; Low-temperature steam reforming of propane; Pt loading; NiMn2O4 spinel; PtNi
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2018R1A2B6004746, 2019R1A5A8080290]
- National Research Foundation of Korea [2018R1A2B6004746] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The purpose of the present work is to unveil the effect of very small amounts of Pt loaded onto a NiMn2O4 spinel catalyst on the chemical characteristics and catalytic activity for low-temperature steam reforming (LTSR) of propane. In the H-2-TPR curves of the Pt-loaded catalysts, the reduction corresponding to Pt2+-> Pt-0 occurred largely at approximately 200 -350 degrees C. It is due to the high accumulation of hydrogen on the PtNi alloy. X-ray photoelectron spectroscopy measurements proved that the PtNi component acted as the active species. The catalysts with Pt loaded on 40NiMn(2)O(4)/60 gamma-Al2O3 show higher propane conversion due to the larger metal interface area created between Pt, Ni, and MnO. In particular, the 40Pt(0.025) NiMn2O4/60 gamma-Al2O3 catalyst maintained a very low amount of carbon deposition, a stable propane conversion of 100% and a hydrogen production capacity of 60% at 450 degrees C, even after 100 h of LTSR. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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