ISSN:
0142-2421
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
Characterization studies on a series of coprecipitated alumina-supported nickel methanation catalysts by X-ray photoelectron spectroscopy are described. Binding energies and spectral shapes have been determined for several standard compounds (Ni, NiO, Ni(OH)2, NiAl2O4, Al2O3) to provide background information for interpreting the catalyst spectra. The results indicate that the surface regions of the fresh (unreduced) catalysts are composed primarily of amorphous NiAl2O4 with some NiO particles present either within the pores of the support or covered by a NiAl2O4 layer. In comparison with similarly prepared silica-supported catalysts, reducibility is more difficult indicating the presence of stronger support interactions.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/sia.740020104
Permalink
