Studies on the steam CO2 reforming of methane over ordered mesoporous nickel-magnesium-alumina catalysts

Title
Studies on the steam CO2 reforming of methane over ordered mesoporous nickel-magnesium-alumina catalysts
Authors
문동주신설아노영수홍기훈김현진양은혁박지인이관영
Issue Date
2018-02
Publisher
Research on chemical intermediates
Citation
VOL 44, NO 2-1148
Abstract
Ordered mesoporous materials have received much attention because of their high surface area and ordered pore structure. The Mg-promoted ordered mesoporous nickel– alumina catalysts (M-MgxNA), which were prepared using the evaporation induced self-assembly method, were investigated in the Steam CO2 Reforming (SCR) of methane. The fresh and spent catalysts were characterized by various analytical techniques such as N2 physisorption, small-angle X-ray scattering, X-ray diffraction, temperature-programmed reduction, thermogravimetric analysis, transmission electron microscopy and CO2-temperature programmed desorption analysis. We have found that the M-MgxNA catalyst has a larger surface area and a narrower pore size distribution than the Ni/Al2O3 catalyst (NA); furthermore, the M-MgxNA catalyst exhibits high catalytic stability under the tested conditions of 600 C, 1 bar and feed molar ratio of CH4:CO2:H2O = 1:1:1. We consider that the ordered mesoporosity prevents the nickel particles from sintering because of the confinement effect and decreases the particle size in the SCR reaction. Thus, the Mg-promoted ordered mesoporous nickel-alumina catalyst shows enhanced resistance to carbon formation during the steam CO2 reforming of methane.
URI
http://pubs.kist.re.kr/handle/201004/67924
ISSN
0922-6168
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