镍
催化作用
二氧化碳重整
甲烷
夹
金属
离解(化学)
材料科学
无机化学
甲烷化
碳纤维
化学工程
化学
合成气
冶金
有机化学
复合材料
工程类
复合数
作者
Yu Shi,Shiwei Wang,Yiming Li,Fan Yang,Hongbo Yu,Yuting Chu,Tong Li,Hongfeng Yin
出处
期刊:Materials
[MDPI AG]
日期:2022-04-22
卷期号:15 (9): 3044-3044
被引量:10
摘要
A series of NiP-x/Al2O3 catalysts containing different ratio of metallic nickel to nickel phosphides, prepared by varying Ni/P molar ratio of 4, 3, 2 through a co-impregnation method, were employed to investigate the synergistic effect of metallic nickel-nickel phosphides in dry methane reforming reaction. The Ni/Al2O3 catalyst indicates good activity along with severe carbon deposition. The presence of phosphorus increases nickel dispersion as well as the interaction between nickel and alumina support, which results in smaller nickel particles. The co-existence of metallic nickel and nickel phosphides species is confirmed at all the P contained catalysts. Due to the relative stronger CO2 dissociation ability, the NiP-x/Al2O3 catalysts indicate obvious higher resistance of carbon deposition. Furthermore, because of good balance between CH4 dissociation and CO2 dissociation, NiP-2/Al2O3 catalyst exhibits best resistance of carbon deposition, few carbon depositions were formed after 50 h of dry methane reforming.
科研通智能强力驱动
Strongly Powered by AbleSci AI