甲烷化
催化作用
层状双氢氧化物
材料科学
化学工程
色散(光学)
烧结
甲烷
无机化学
金属
层状结构
水溶液
化学
有机化学
冶金
工程类
物理
光学
作者
Ziling Wang,Liang Huang,Tomás Ramírez Reina,Angelos M. Efstathiou,Qiang Wang
出处
期刊:Catalysts
[MDPI AG]
日期:2020-10-12
卷期号:10 (10): 1168-1168
被引量:4
标识
DOI:10.3390/catal10101168
摘要
Converting CO2 to methane via catalytic routes is an effective way to control the CO2 content released in the atmosphere while producing value-added fuels and chemicals. In this study, the CO2 methanation performance of highly dispersed Ni-based catalysts derived from aqueous miscible organic layered double hydroxides (AMO-LDHs) was investigated. The activity of the catalyst was found to be largely influenced by the chemical composition of Ni metal precursor and loading. A Ni-based catalyst derived from AMO-Ni3Al1-CO3 LDH exhibited a maximum CO2 conversion of 87.9% and 100% CH4 selectivity ascribed to both the lamellar catalyst structure and the high Ni metal dispersion achieved. Moreover, due to the strong Ni metal–support interactions and abundant oxygen vacancy concentration developed, this catalyst also showed excellent resistance to carbon deposition and metal sintering. In particular, high stability was observed after 19 h in CO2/H2 reaction at 360 °C.
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