Effects of structure on the carbon dioxide methanation performance of Co-based catalysts
发布时间：2024-10-10
点击次数：
- 影响因子：
- 7.139
- DOI码：
- 10.1016/j.ijhydene.2013.05.130
- 所属单位：
- 重庆工商大学
- 教研室：
- 化学工程系
- 发表刊物：
- international journal of hydrogen energy
- 项目来源：
- 重庆工商大学
- 关键字：
- Ordered mesoporous；Co-based catalyst；Carbon dioxide；Methanation；Catalytic hydrogenation
- 摘要：
- Mesoporous Co/KIT-6 and Co/meso-SiO2 catalysts were prepared via hydrogen reduction and were subsequently used in CO2 catalytic hydrogenation to produce methane. The properties of these catalysts were investigated via low-angle X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, and transmission electron microscopy (TEM). The results indicate that the synthesized Co/KIT-6 and Co/meso-SiO2 catalysts have mesoporous structures with well-dispersed Co species, as well as high CO2 catalytic hydrogenation activities. The Co/KIT-6 catalyst has a large specific surface area (368.9 m2 g−1) and a highly ordered bicontinuous mesoporous structure. This catalyst exhibits excellent CO2 catalytic hydrogenation activity and methane product selectivity, which are both higher than those of the Co/meso-SiO2 catalyst at high reaction temperatures. The CO2 conversion and methane selectivity of the Co/KIT-6 catalyst at 280 °C are 48.9% and 100%, respectively. The high dispersion of the Co species and the large specific surface area of the prepared Co-based catalysts contribute to the high catalytic activities. In addition, the highly ordered, bicontinuous, mesoporous structure of the Co/KIT-6 catalyst improves the selectivity for the methane product.
- 第一作者：
- 周桂林
- 合写作者：
- 吴甜,谢红梅,郑旭煦
- 论文类型：
- 源刊论文
- 通讯作者：
- 周桂林
- 论文编号：
- UI8ETMSRBTYSITROCBOGJLPWBR4TUPS9
- 学科门类：
- 工学
- 一级学科：
- 化学工程与技术
- 文献类型：
- Journal Article
- 卷号：
- 38
- 期号：
- 24
- 页面范围：
- 10012–10018
- 是否译文：
- 否
- 发表时间：
- 2013-08-01