Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ijhydene.2011.08.022
Title: Promotional effect of alkaline earth over Ni-La2O3 catalyst for CO2 reforming of CH4: Role of surface oxygen species on H2 production and carbon suppression
Authors: Sutthiumporn, K.
Kawi, S. 
Keywords: Alkaline earth metal oxides
Dry CO2 reforming of methane
Hydrogen production
Ni-La2O3 catalyst
Oxygen lattice species
Syngas production
Issue Date: Nov-2011
Citation: Sutthiumporn, K., Kawi, S. (2011-11). Promotional effect of alkaline earth over Ni-La2O3 catalyst for CO2 reforming of CH4: Role of surface oxygen species on H2 production and carbon suppression. International Journal of Hydrogen Energy 36 (22) : 14435-14446. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijhydene.2011.08.022
Abstract: Alkaline earth elements (Mg, Ca and Sr) on Ni-La2O3 catalyst have been investigated as promoters for syngas production from dry CO2 reforming of methane (DRM). The catalysis results of DRM performance at 600 °C show that the Sr-doped Ni-La2O3 catalyst not only yields the highest CH4 and CO2 conversions (∼78% and ∼60%) and highest H2 production (∼42% by vol.) but also has the lowest carbon deposition over the catalyst surface. The XPS, O2-TPD, H2-TPR and FTIR results show that the excellent performance over the Sr-doped Ni-La2O3 catalyst is attributed to the presence of a high amount of lattice oxygen surface species which promotes C-H activation in DRM reaction, resulting in high H2 production. Moreover, these surface oxygen species on the Ni-SDL catalyst can adsorb CO2 molecules to form bidentate carbonate species, which can then react with the surface carbon species formed during DRM, resulting in higher CO2 conversion and lower carbon formation. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Source Title: International Journal of Hydrogen Energy
URI: http://scholarbank.nus.edu.sg/handle/10635/89948
ISSN: 03603199
DOI: 10.1016/j.ijhydene.2011.08.022
Appears in Collections:Staff Publications

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

SCOPUSTM   
Citations

168
checked on Jul 17, 2018

WEB OF SCIENCETM
Citations

153
checked on Jun 20, 2018

Page view(s)

67
checked on Jun 29, 2018

Google ScholarTM

Check

Altmetric


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