Steam CO2 reforming of methane over La1¡xCexNiO3 perovskite catalysts

Title
Steam CO2 reforming of methane over La1¡xCexNiO3 perovskite catalysts
Authors
양은혁김나영노영수임성수정재선이재석홍기훈문동주
Keywords
Cerium substituation; Hydrogen production; Perovskite; Steam CO2 reforming
Issue Date
2015-09
Publisher
International journal of hydrogen energy
Citation
VOL 40, NO 35, 11831-11839
Abstract
Steam CO2 reforming of methane was carried out over cerium substituted perovskite catalysts. Among the catalysts studied, La0.9Ce0.1NiO3 showed the best performance with 49% of methane and 14% of CO2 conversion under the tested conditions. The chemical and structural properties of the catalysts before and after the reaction were studied by N-2 physisorption, X-ray diffraction, CO2-TPD, TPH, TPR, TGA and TEM. It was found that most of Ce existed as CeO2 rather than being incorporated in perovskite lattice because of large difference in ionic radii between La3+ and Ce4+. Few substitution of Ce in A site resulted in high degree of reduction for active Ni species with good catalytic activity which was further decreased with increasing Ce concentration; substitution of large amount of Ce species led to methanation of CO2 and formation of large nickel cluster. TPH and TGA analysis revealed that Ce substituted catalyst has better resistance to coke deposition compared to non-promoted perovskite catalyst
URI
http://pubs.kist.re.kr/handle/201004/50653
ISSN
03603199
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE