Reversible hydrogenation and dehydrogenation of benzene for hydrogen storage on highly dispersed Pd/γ-Al2O3 catalyst
发布时间：2024-11-19
点击次数：
- 影响因子：
- 6.1
- DOI码：
- 10.1016/j.jiec.2024.01.018
- 所属单位：
- 环境与资源学院
- 教研室：
- 化学工程系
- 发表刊物：
- Journal of Industrial and Engineering Chemistry
- 项目来源：
- 重庆市自然科学基金面上项目
- 关键字：
- Highly dispersed Pd/γ-Al2O3 catalyst; Benzene hydrogenation; Cyclohexane dehydrogenation; Hydrogen storage; Liquid organic hydrogen carrier
- 摘要：
- The research and development of efficient catalyst is the key to achieving high-capacity hydrogen storage inliquid organic hydrogen carriers (LOHCs). The highly dispersed Pd/γ-Al2O3 catalysts with few-atom Pd wereprepared by impregnation method using HNO3 as promoter. The hydrogen storage capacity of the benzene/cyclohexane hydrogen carriers was further investigated by vapor phase benzene hydrogenation and cyclohexanedehydrogenation reactions over the studied Pd/γ-Al2O3 catalysts. The results showed that the metal Pd was theactive centers for the benzene hydrogenation/cyclohexane dehydrogenation reactions. The addition of HNO3 caneffectively promote the metal Pd to be highly dispersed, thus improving the Pd atoms utilization and reducing thePd dosage. Meanwhile, the strongly electronic effects between the highly dispersed Pd species and the Al2O3support promoted the electron-deficient Pdδ+ sites to be formed, which enhanced the adsorption and activationability for the reactants molecules. The benzene conversion on the Pd/γ-Al2O3 catalyst with a metallic Pd loadingof 1.0 wt% reached 97.51 % at 200 ◦C. While the cyclohexane conversion reached 90.94 % at 400 ◦C with theactual hydrogen storage capacity of 6.54 wt%, which provided an effective idea for large-scale storage andtransportation of H2 based on LOHCs
- 第一作者：
- Guilin Zhou
- 合写作者：
- Wenjing Liu,Yue Zhao,Xiaoping Wang,Shuang Chen,Aiping Jia,Hongmei Xie
- 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：
- 134
- 页面范围：
- 561–573
- 是否译文：
- 否
- 发表时间：
- 2024-06-25
- 收录刊物：
- SCI