期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 38, 期 1, 页码 117-126出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.07.136
关键词
Methane; Reforming; Calcination ambience; Ni-Ce/SiO2; Synthesis gas; Stability
资金
- NNSFC [20976109, 21021001]
- Special Research Foundation of Doctoral Education of China [20090181110046]
- characterization of the catalysts from Analytical and Testing Center of Sichuan University
Ni-Ce/SiO2 catalysts were prepared by calcination under Ar, CO2, O-2 and H-2 ambience, and applied in CO2 reforming of methane for synthesis gas production. BET, XRD, XPS, TPR, SEM, TEM and TPH techniques were employed to characterize the fresh and used catalysts. Highly dispersed nickel oxides bearing stronger interaction with SiO2 prevented the metal sintering. The formation of reactive carbon species on Ni-Ce/SiO2 catalyst calcined under Ar ambience effectively promoted the carbon elimination and kept the catalyst more stable. Nevertheless, the oxygen storage capacity of CeO2 might partly lose on Ni-Ce/SiO2 calcined under H-2 ambience. As a result, the inhibition of carbon elimination and the deposition of inert carbon were responsible for its partial deactivation. Copyright (c) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据