期刊
CATALYSIS TODAY
卷 117, 期 4, 页码 525-535出版社
ELSEVIER
DOI: 10.1016/j.cattod.2006.06.036
关键词
methane combustion; bicomponent catalyst; manganese oxides; hexaaluminate; manganese-alumina spinel; palladium oxide; synergetic effect
A synergetic effect in the catalytic activity has been found after palladium introduction in Mn-Al-O systems. The magnitude of the synergetic effect depends on the types of the oxidic manganese species: oxide Mn3O4, spinel (Mn, Mg)[Mn, Al](2)O-4 or hexaaluminate (Mn, Mg)LaAl11O19. The synergetic effect of Pd and manganese-containing compounds is observed only if palladium is introduced to the low-temperature precursor of the manganese alumina spinet or manganese hexaaluminate. The synergetic effect is not observed when high-temperature samples with formed spinet or hexaaluminate phases are modified with Pd. (c) 2006 Elsevier B.V. All rights reserved.
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