Role of surface Ni and Ce species of Ni/CeO2 catalyst in CO2 methanation
发布时间：2024-10-10
点击次数：
- 影响因子：
- 6.707
- DOI码：
- 10.1016/j.apsusc.2016.04.180
- 所属单位：
- 重庆工商大学
- 教研室：
- 材料科学与工程系
- 发表刊物：
- applied surface science
- 关键字：
- Carbon dioxide；Catalytic hydrogenation；Methanation；Active Ni species；Oxygen vacancies
- 摘要：
- CeO2, which was used as support to prepare mesoporous Ni/CeO2 catalyst, was prepared by the hard-template method. The prepared NiO/CeO2 precursor and Ni/CeO2 catalyst were studied by H2–TPR, in-situ XPS, and in-situ FT-IR. The catalytic properties of the prepared Ni/CeO2 catalyst were also investigated by CO2 catalytic hydrogenation methanation. H2–TPR and in-situ XPS results showed that metal Ni species and surface oxygen vacancies could be formed by H2 reduction. In-situ FT-IR and in-situ XPS results indicated that CO2 molecules could be reduced by active metal Ni species and surface oxygen vacancies to generate active CO species and promote CO2 methanation. The Ni/CeO2 catalyst presented the high CO2 methanation activity, and CO2 conversion and CH4 selectivity reached 91.1% and 100% at 340 °C and atmospheric pressure.
- 第一作者：
- 周桂林
- 合写作者：
- 刘慧冉,崔凯凯,贾爱萍,胡庚申,焦昭杰,张贤明
- 论文类型：
- 源刊论文
- 通讯作者：
- 周桂林
- 论文编号：
- TYQ5RNDJU2T46P1SVCX1M569U6JA2DUL
- 学科门类：
- 工学
- 文献类型：
- Journal Article
- 期号：
- 383
- 页面范围：
- 248–252
- 是否译文：
- 否
- 发表时间：
- 2016-10-01