Ni-Foam Structured Ni-Phyllosilicate Ensemble as an Efficient Monolithic Catalyst for CO2 Methanation

• Published in: Catalysis letters Vol. 152; no. 9; pp. 2738 - 2744
• Main Authors: Chen, Yaqi, Wu, Xiaoren, Liu, Qing, He, Maoshuai, Bai, Hongcun
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2022; Springer Nature B.V
• Subjects: Carbon dioxide; Catalysis; Catalysts; Catalytic activity; Chemical engineering; Chemistry; Chemistry and Materials Science; Environmental impact; Ethanol; Industrial Chemistry/Chemical Engineering; Laboratories; Methanation; Morphology; Nickel; Nitrates; Organometallic Chemistry; Physical Chemistry; Sintering; Ni-phyllosilicate; Sacrificial template; Ni-foam; Nickel hydroxide; Monolithic catalyst
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1007/s10562-021-03850-y

This work proposed a new path to synthesize Ni-phyllosilicate through the reaction of nickel hydroxide and silica sol on the surface of Ni-foam to form the monolithic Ni-phyllosilicate/Ni-foam catalyst. Ni-phyllosilicate could reprint the morphology of nickel hydroxid and firmly anchor on the framework of Ni-foam, which obtained fine Ni particles of 2.8 nm after reduction in H 2 at 650 °C, resulting in high catalytic activity for CO 2 methanation. In addition, the Ni-phyllosilicate/Ni-foam catalyst showed high long-term stability in a 100 h-lifetime test owing to the combined effects of surface confinement of Ni-phyllosilicate, firm anchoring between Ni-phyllosilicate and Ni-foam, as well as the high heat transfer property of Ni-foam. Graphical Abstract