脱氢
催化作用
沸石
选择性
乙醛
化学工程
乙醇
铜
材料科学
纳米颗粒
化学
粒径
空间速度
多孔性
金属
多相催化
无机化学
有机化学
纳米技术
工程类
作者
Jifeng Pang,Ming Yin,Pengfei Wu,Lei Song,Xianquan Li,Tao Zhang,Mingyuan Zheng
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2023-02-13
卷期号:11 (8): 3297-3305
被引量:7
标识
DOI:10.1021/acssuschemeng.2c06058
摘要
Encapsulation of metal particles with ordered porous zeolite is a promising method to stabilize nanoparticles. In this work, Cu/MFI catalysts prepared by the impregnation method were encapsulated with MFI to yield (Cu/MFI)@MFI catalysts for ethanol dehydrogenation. The encapsulation process not only anchored Cu particles into MFI but also redispersed Cu with decreased particle sizes and newly formed Cu+ species. During the ethanol dehydrogenation reaction, the Cu+ and Cu0 species confined in (Cu/MFI)@MFI catalysts demonstrated synergistic effects and afforded 95.7% acetaldehyde selectivity, 97.2% ethanol conversion at 523 K, and a weight hourly space velocity (WHSV) of 0.53 h–1 in the 200 h time on stream over the optimized (Cu/MFI)@MFI 100% catalyst, which is significantly better than the counterpart of the Cu/MFI catalyst.
科研通智能强力驱动
Strongly Powered by AbleSci AI