Preparation of porous NiCe composite catalyst and its performance for CO2 hydrogenation
发布时间：2024-08-19
点击次数：
- 影响因子：
- 3.154
- DOI码：
- 10.1002/cnma.202100533
- 所属单位：
- 重庆工商大学
- 教研室：
- 化学工程系
- 发表刊物：
- ChemNanoMat
- 项目来源：
- 重庆市教育委员会，重庆市科技局
- 关键字：
- NiCe composite catalyst；Porous structure；CO2；catalytic hydrogenation
- 摘要：
- Ni component can be effectively introduced intoCeO2 by a soft template method to prepare porous NiCe composite catalysts. The reducibility of the catalyst precursors was studied by H2-TPR. The physicochemical properties of the prepared NiCe composite catalysts were characterized by XRD, quasi in-situ XPS, BET and TEM. And the catalytic performances of the corresponding NiCe composite catalysts was evaluated by CO2 catalytic hydrogenation. The synergistic effect of Ni and Ce species can significantly improve the reducibility of the precursors to form CO2 hydrogenation active sites in the corresponding NiCe composite catalysts. The morphology, pore structure, specific surface area, crystallinity and content of metal Ni species of the prepared NiCe composite catalysts were significantly affected by nNi/nCe ratio, which can affect the CO2 catalytic hydrogenation performances of NiCe composite catalysts. The synergistic effect of Ni and Ce species can also promote the formation of NiCe composite catalyst nanoparticles with small particle size about 5–10 nm. The developed mesoporous structure and high specific surface area can be formed in the prepared NiCe composite catalysts. The NC3 catalyst with a nNi/nCe ratio of 3.0 showed the best CO2 hydroreduction performances and use stability. When the reaction temperature was 300 °C, the CO2 conversion and CH4 selectivity can reach 85.6% and100%, respectively. Even if the reaction temperature rises to340°C, the CO2 conversion and CH4 selectivity can be maintained at 83.7% and 100% in the continuous reaction of600 min, respectively.
- 第一作者：
- 周桂林
- 合写作者：
- 徐诗雨,李月,蒋青青,许本静,谢红梅,张桂芝
- 论文类型：
- 源刊论文
- 通讯作者：
- 周桂林
- 论文编号：
- FTS7ZZEQXSUE1XAK4Y9GL3FTRF9F8ILS
- 学科门类：
- 工学
- 文献类型：
- Journal Article
- 卷号：
- 8
- 期号：
- 4
- 页面范围：
- e202100533
- 是否译文：
- 否
- 发表时间：
- 2022-04-01