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Efficient conversion of CO2 to methane using thin-layer SiOx matrix anchored nickel catalysts
Huang, Xieyi; Wang, Peng; Zhang, Zhichao; Zhang, Shaoning; Du, Xianlong; Bi, Qingyuan; Huang, Fudiang
2019-09-07
Source PublicationNEW JOURNAL OF CHEMISTRY
ISSN1144-0546
Volume43Issue:33Pages:13217
SubtypeArticle
AbstractHydrogenation of CO2 toward methane is a promising alternative for CO2 utilization and the development of highly efficient catalysts is the key factor for CO2 methanation. Herein, thin-layer SiOx matrix anchored nickel species catalysts (Ni/SiOx) with high specific surface area and a unique electronic/geometric structure have been successfully fabricated via a hydrothermal strategy. Ni3Si2O5(OH)(4), with a typical layered structure and uniformly dispersed nickel sites, is an ideal precursor for Ni/SiOx catalysts for enhanced CO2 adsorption and chemical activation. The highly dispersed Ni active sites with suitable metal-support interactions with the SiOx matrix can promote CO2 conversion. Moreover, the pore structure and surface physicochemical properties of the Ni/SiOx samples can be tuned by changing the Ni/Si molar ratio. The optimized Ni/SiOx-2 catalyst shows outstanding catalytic efficiency with CO2 conversion of 64.2% and CH4 selectivity of 91.4% as well as excellent long-term (200 h) thermal stability for CO2 methanation under the conditions of 400 degrees C and the high gas hourly space velocity (GHSV) of 90 000 mL g(cat)(-1) h(-1). These findings can open new avenues towards the development of new-type nanomaterials in catalysis, especially renewable C1 chemistry transformations.
DOI10.1039/c9nj03152a
Language英语
WOS Research AreaChemistry
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26846
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Huang, Xieyi,Wang, Peng,Zhang, Zhichao,et al. Efficient conversion of CO2 to methane using thin-layer SiOx matrix anchored nickel catalysts[J]. NEW JOURNAL OF CHEMISTRY,2019,43(33):13217.
APA Huang, Xieyi.,Wang, Peng.,Zhang, Zhichao.,Zhang, Shaoning.,Du, Xianlong.,...&Huang, Fudiang.(2019).Efficient conversion of CO2 to methane using thin-layer SiOx matrix anchored nickel catalysts.NEW JOURNAL OF CHEMISTRY,43(33),13217.
MLA Huang, Xieyi,et al."Efficient conversion of CO2 to methane using thin-layer SiOx matrix anchored nickel catalysts".NEW JOURNAL OF CHEMISTRY 43.33(2019):13217.
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