In:
ChemCatChem, Wiley, Vol. 10, No. 24 ( 2018-12-21), p. 5637-5648
Abstract:
Catalytic combustion of methane is widely used in industrial and transportation activities. The commonly used Pd‐based catalysts, however, are easily deactivated under hydrothermal conditions. In this work, we adopted a novel strategy to prepare a GaO x ‐doped Pd/Al 2 O 3 catalyst via the oxidative transformation of intermetallic Pd 5 Ga 3 nanocrystals supported on γ ‐Al 2 O 3 . We observed a synergistic effect between palladium and gallium oxide via formation of a bi‐functional active Pd−O−Ga phase, resulting in a highly active and exceptionally stable catalyst that could markedly suppress the sintering of noble metals under harsh conditions (hydrothermal treatment at 750 °C). Moreover, the presence of a large amount of surface oxygen vacancies and the surface Pd−O−Ga phase could promote methane combustion over the catalysts. It is believed that such a novel dual‐metal catalyst is promising in practical applications for methane combustion.
Type of Medium:
Online Resource
ISSN:
1867-3880
,
1867-3899
DOI:
10.1002/cctc.201801684
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2501161-3
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