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- W4280508769 abstract "It is a challenge to prepare Ni-phyllosilicate catalysts deriving from the reaction of nickel salts and biomass-based silica with high Ni contents. In order to efficiently synthesize nickel phyllosilicate, the acid-treated rice husk without calcination (P-R) was directly used as the raw material. The as-synthesized Ni-phyllosilicate (N/P-R) exhibited high nickel content of 46.7 wt% owing to utilization of the abundant silanol group in the fresh rice husk. On the contrary, the Ni content of Ni-phyllosilicate sample (N/R–S) prepared using the calcinated rice husk-based silica was only 4.8 wt% because of the loss of silanol group during calcination process. As a result, N/P-R displayed much higher catalytic activity for CO2 methanation than N/R–S. It was found that the silanol group was in favour of forming the important intermediate Si(OH)4, and thereby facilitated the formation of nickel phyllosilicate. In addition, the N/P-R catalyst demonstrated superior stability and excellent anti-sintering ability in the long lifetime test. In short, the proposed method in this work could not only efficiently synthesize nickel phyllosilicate with high Ni content, but also reduce energy consumption and operation steps compared to the one prepared using biomass-based silica." @default.
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- W4280508769 date "2022-06-01" @default.
- W4280508769 modified "2023-10-12" @default.
- W4280508769 title "Efficient utilization of silanol group in rice husk to promote the synthesis of Ni-phyllosilicate for CO2 methanation" @default.
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- W4280508769 doi "https://doi.org/10.1016/j.ijhydene.2022.04.249" @default.
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