期刊
JOURNAL OF ENERGY CHEMISTRY
卷 52, 期 -, 页码 191-201出版社
ELSEVIER
DOI: 10.1016/j.jechem.2020.04.045
关键词
EMT; Palladium; Stability; Carbonylation; Dimethyl carbonate
资金
- National Natural Science Foundation of China [21908246, 21975285, U1862118]
- China Postdoctoral Science Foundation [2017M622311]
- Fundamental Research Funds for the Central Universities [18CX02148A]
- SinoFrench International Laboratory (LIA) Zeolites
Enhanced interactions between palladium and EMT zeolite inhibit sintering of palladium clusters and maintain Pd2+ active sites, which is crucial for the excellent performance of the catalyst in the indirect oxidative carbonylation of methanol to DMC.
Palladium containing EMT zeolite catalyst (Pd/EMT) was prepared and used for the indirect oxidative carbonylation of methanol to dimethyl carbonate (DMC). The EMT zeolite was employed as a new catalyst support and compared with the conventional Pd containing FAU zeolite catalyst (Pd/FAU). The Pd/EMT in contrast to the Pd/FAU catalyst exhibited high intrinsic activity with the turnover frequency of 0.25 s(-1) vs. 0.11 s(-1). The Pd/EMT catalyst showed high CO conversion of 82% and DMC selectivity of 79%, that maintained for at least 130 h, while the activity of the Pd/FAU catalyst rapidly deteriorated within 12 h. The enhanced interactions between Pd and EMT zeolite inhibited the sintering of palladium clusters and maintained the Pd2+ active sites in the Pd/EMT catalyst. The stabilization of the mono-dispersed Pd clusters within the EMT zeolite is paramount to the excellent performance of the catalyst for the indirect oxidative carbonylation of methanol to DMC. (c) 2020 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据