We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A Supported Nickel Catalyst Stabilized by a Surface Digging Effect for Efficient Methane Oxidation.
- Authors
Zhou, Huang; Liu, Tianyang; Zhao, Xuyan; Zhao, Yafei; Lv, Hongwei; Fang, Shi; Wang, Xiaoqian; Zhou, Fangyao; Xu, Qian; Xu, Jie; Xiong, Can; Xue, Zhenggang; Wang, Kai; Cheong, Weng‐Chon; Xi, Wei; Gu, Lin; Yao, Tao; Wei, Shiqiang; Hong, Xun; Luo, Jun
- Abstract
A surface digging effect of supported Ni NPs on an amorphous N‐doped carbon is described, during which the surface‐loaded Ni NPs would etch and sink into the underneath carbon support to prevent sintering. This process is driven by the strong coordination interaction between the surface Ni atoms and N‐rich defects. In the aim of activation of C−H bonds for methane oxidation, those sinking Ni NPs could be further transformed into thermodynamically stable and active metal‐defect sites within the as‐generated surface holes by simply elevating the temperature. In situ transmission electron microscopy images reveal the sunk Ni NPs dig themselves adaptive surface holes, which would largely prevent the migration of Ni NPs without weakening their accessibility. The reported two‐step strategy opens up a new route to manufacture sintering‐resistant supported metal catalysts without degrading their catalytic efficiency.
- Subjects
NICKEL catalysts; TRANSMISSION electron microscopy; METHANE; METAL catalysts; AMORPHOUS carbon; STEAM reforming; ATMOSPHERIC methane
- Publication
Angewandte Chemie, 2019, Vol 131, Issue 51, p18559
- ISSN
0044-8249
- Publication type
Academic Journal
- DOI
10.1002/ange.201912785