Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.cej.2010.12.042
Title: Manganese promoting effects on the Co-Ce-Zr-Ox nano catalysts for methane dry reforming with carbon dioxide to hydrogen and carbon monoxide
Authors: Wang, N.
Chu, W.
Zhang, T.
Zhao, X.-S. 
Keywords: CeO2-ZrO2
High catalytic performance
Methane dry reforming with CO2
Mn doping
Nano cobalt-composite catalyst
Oxygen mobility
Issue Date: 1-Jun-2011
Citation: Wang, N., Chu, W., Zhang, T., Zhao, X.-S. (2011-06-01). Manganese promoting effects on the Co-Ce-Zr-Ox nano catalysts for methane dry reforming with carbon dioxide to hydrogen and carbon monoxide. Chemical Engineering Journal 170 (2-3) : 457-463. ScholarBank@NUS Repository. https://doi.org/10.1016/j.cej.2010.12.042
Abstract: The Mn doping nanocrystalline Co-Ce-Zr-Ox catalysts were prepared by the co-precipitation method and characterized by various physico-chemical characterization techniques such as X-ray diffraction (XRD), temperature- programmed reduction (TPR), O2 temperature-programmed desorption (O2-TPD), X-ray photoelectron spectroscopy (XPS) and temperature-programmed hydrogenation (TPH). Their catalytic performances for methane reforming with CO2 to hydrogen and carbon monoxide were investigated. Adding Mn remarkably enhanced the catalytic activity and stability of the Co-Ce-Zr-Ox catalyst. The highest catalytic activity and long-term stability was obtained when the molar ratio of Mn/(Ce+Zr+Mn) was 10%. The improved catalytic behavior was closely related to the surface oxygen species and oxygen mobility. In comparison with that of Co-Ce-Zr-Ox catalyst, the migration of bulk lattice oxygen species became easier, and the content of surface oxygen species was higher for the Mn-doped nanocrystalline Co-Ce-Zr-Ox samples. TPH characterization showed that the surface coke species could be easily oxidized into COx for the Mn-doped nano cobalt-composite catalyst due to the higher amount of mobile oxygen. The Mn incorporation promoted the dispersion of the nano-sized CoOx crystallites. In comparison with the impregnated samples, CoOx species dispersed better in the co-precipitated catalysts. © 2011.
Source Title: Chemical Engineering Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/89356
ISSN: 13858947
DOI: 10.1016/j.cej.2010.12.042
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

70
checked on Oct 15, 2018

WEB OF SCIENCETM
Citations

68
checked on Oct 15, 2018

Page view(s)

28
checked on Oct 12, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.