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- W2012433991 abstract "A comparison of catalytic and adsorption properties for [email protected]2/Si–Al2O3 (1-wt% Pt and 9-wt% CeO2) and [email protected]2/Si–Al2O3 (1-wt% Pd and 9-wt% CeO2) core–shell catalysts indicates that the CeO2 shell is stable for Pd but not for Pt. Following calcination at 773 K, [email protected]2/Si–Al2O3 exhibits water–gas-shift (WGS) rates in 3% H2O and CO that are similar to rates found on conventional Pt/CeO2, implying that there is good contact between the Pt and CeO2 phases, even at the relatively low CeO2 loading. WGS rates on [email protected]2/Si–Al2O3 were also reasonably stable with time and unaffected by pre-reduction of the catalyst. By comparison, WGS rates over [email protected]2/Si–Al2O3 declined rapidly due to reduction of CeO2 and were suppressed by pre-reduction of CeO2. After calcination to 1073 K, large metal particles were observed with [email protected]2/Si–Al2O3, but not on [email protected]2/Si–Al2O3. Coulometric titration measurements on these two materials suggest stronger interactions between CeO2 and Pd and these are likely responsible for the higher stability of the core–shell structure in [email protected]2 compared to [email protected]2." @default.
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- W2012433991 date "2015-09-01" @default.
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- W2012433991 title "A comparison of hierarchical Pt@CeO2/Si–Al2O3 and Pd@CeO2/Si–Al2O3" @default.
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- W2012433991 doi "https://doi.org/10.1016/j.cattod.2015.01.036" @default.
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