合成气
催化作用
二氧化碳重整
材料科学
烧结
化学工程
甲烷
热重分析
差示扫描量热法
冶金
化学
有机化学
热力学
物理
工程类
作者
Bing Han,Cederick Cyril Amoo,Guihua Zhang,Shilin Cheng,Brighton Mazonde,Mudassar Javed,Xikun Gai,Chao Lu,Renqiang Yang,Chuang Xing
标识
DOI:10.1002/ente.201801033
摘要
The CO 2 dry reforming of methane (DRM) reaction is an important technology with high prospects to reduce greenhouse gas emissions while simultaneously producing syngas for industrial usage. To date, the lack of an effective catalyst for the reaction has inhibited its commercialization. The coking and sintering behaviors of the catalysts are key factors for commercial production of syngas from DRM reaction. A microcapsule catalyst prepared by sol–gel method with Ni/ZSM‐5 as core and amorphous SiO 2 as shell is successfully synthesized. The characterizations of the catalysts are analyzed using X‐ray powder diffraction (XRD), transmission electron microscopy (TEM), H 2 temperature programmed reduction (H 2 ‐TPR), NH 3 temperature programmed desorption (NH 3 ‐TPD), and thermogravimetry & differential scanning calorimetry (TGA‐DSC). The spatial confinement of the Ni metal particles between the SiO 2 shell and ZSM‐5 suppresses Ni particles aggregation by strengthening the interaction between Ni particles and ZSM‐5 core. The coking‐resistant ability is equally improved. The capsule catalysts isolate the contact between the carbon deposits and the nickel active centre, thus improving the activity of the catalysts. 10Ni/ZSM‐5@SiO 2 emerged superior in activity in comparison to other catalysts.
科研通智能强力驱动
Strongly Powered by AbleSci AI