Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/138847
Title: Improved stability of Y2O3 supported Ni catalysts for CO2 methanation by precursor-determined metal-support interaction
Authors: Yan, Yong
Dai, Yihu
Yang, Yanhui
Lapkin, Alexei A.
Keywords: Engineering::Chemical engineering
Issue Date: 2018
Source: Yan, Y., Dai, Y., Yang, Y., & Lapkin, A. A. (2018). Improved stability of Y2O3 supported Ni catalysts for CO2 methanation by precursor-determined metal-support interaction. Applied Catalysis B: Environmental, 237, 504-512. doi:10.1016/j.apcatb.2018.06.021
Journal: Applied Catalysis B: Environmental
Abstract: Y2O3 supported Ni catalysts were prepared from different Y precursors. The catalysts synthesized via Y4O(OH)9(NO3) and YO(NO3) as precursors exhibit superior activity in CO2 methanation reaction compared to the catalysts prepared by direct impregnation of Y2O3. YO(NO3) acts as a unique matrix to afford anchoring sites to interact with Ni2+ ions, leading to a moderate interaction between Ni metal and Y2O3 support, which translates into excellent catalytic activity and stability towards CO poisoning. In situ DRIFTS spectra confirm the reaction mechanism of Ni/Y2O3 catalyzed CO2 methanation with carbonates and formates as the key intermediates. The apparent difference in the rate of transformation of formates into methane determines catalytic activity of these Ni/Y2O3 catalysts. This work provides an effective strategy to achieve CO2 activation and resistance to CO poisoning through careful selection of precursor for the support, which allows to control the strength of metal-support interaction.
URI: https://hdl.handle.net/10356/138847
ISSN: 0926-3373
DOI: 10.1016/j.apcatb.2018.06.021
Rights: © 2018 Elsevier B.V. All rights reserved. This paper was published in Applied Catalysis B: Environmental and is made available with permission of Elsevier B.V.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

Files in This Item:
File Description SizeFormat 
Improved stability of Y2O3 supported Ni catalysts for CO2 methanation.pdf1.67 MBAdobe PDFView/Open

SCOPUSTM   
Citations 10

33
Updated on Mar 2, 2021

PublonsTM
Citations 10

29
Updated on Mar 5, 2021

Page view(s)

94
Updated on Jan 19, 2022

Download(s) 50

37
Updated on Jan 19, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.