Jump to main content
Jump to site search

Issue 33, 2019
Previous Article Next Article

Efficient conversion of CO2 to methane using thin-layer SiOx matrix anchored nickel catalysts

Author affiliations

Abstract

Hydrogenation 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 °C and the high gas hourly space velocity (GHSV) of 90 000 mL gcat−1 h−1. These findings can open new avenues towards the development of new-type nanomaterials in catalysis, especially renewable C1 chemistry transformations.

Graphical abstract: Efficient conversion of CO2 to methane using thin-layer SiOx matrix anchored nickel catalysts

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Jun 2019, accepted on 25 Jul 2019 and first published on 25 Jul 2019


Article type: Paper
DOI: 10.1039/C9NJ03152A
New J. Chem., 2019,43, 13217-13224

  •   Request permissions

    Efficient conversion of CO2 to methane using thin-layer SiOx matrix anchored nickel catalysts

    X. Huang, P. Wang, Z. Zhang, S. Zhang, X. Du, Q. Bi and F. Huang, New J. Chem., 2019, 43, 13217
    DOI: 10.1039/C9NJ03152A

Search articles by author

Spotlight

Advertisements