CO2 hydrogenation to methane over mesoporous Co/SiO2 catalysts: Effect of structure
发布时间：2024-12-01
点击次数：
- 影响因子：
- 7.132
- DOI码：
- 10.1016/j.jcou.2018.04.023
- 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：
- Journal of CO2 Utilization
- 项目来源：
- 重庆工商大学
- 关键字：
- Mesoporous Co/SiO2 catalysts；Structure；Carbon dioxide；Catalytic hydrogenation；Methanation
- 摘要：
- The mesoporous Co/SiO2 catalysts with 10 wt.% Co loading were prepared by grind-impregnation method for CO2 hydrogenation, and the mesoporous SiO2 materials with different structures were used as the supports. The physicochemical properties of the Co/SiO2 catalysts were characterized by TEM, BET, H2-TPR, XRD, and CO2-TPD. The results indicate that the pore size, specific surface area, and the Co° species crystallinity of the Co/SiO2 catalyst increase with increasing crystallization temperature of preparing SiO2 support. The Co/SiO2 catalyst has the best CO2 adsorption property when SiO2 support is prepared at the crystallization temperature of 100 °C. The CO2 reaction rate (CO2 conversion) of the Co/SiO2 catalysts is as follows: CK100 > CK080 > CK120 > CK060 > CK140 > CK040, and the CH4 selectivity follows the order: CK100 > CK080 > CK120 > CK140 > CK060 > CK040, accompanied by a certain amount of by-product CO molecules. At 360 °C, the CO2 reaction rate (CO2 conversion) of the CK100 catalyst is up to 3.29 × 10−5 mol/gcat/s (44.3%), the CH4 and CO selectivity are 86.5% and 13.5%, respectively.
- 第一作者：
- Guilin Zhou
- 合写作者：
- Huiran Liu,Yingzhi Xing,Shiyu Xu,Hongmei Xie,Kun Xiong
- 论文类型：
- 源刊论文
- 通讯作者：
- Guilin Zhou
- 学科门类：
- 工学
- 文献类型：
- Journal Article
- 卷号：
- 26
- 页面范围：
- 221–229
- 是否译文：
- 否
- 发表时间：
- 2018-05-16
- 收录刊物：
- SCI