e-journal
Methanol steam reforming over Pd/ZnO: Catalyst preparation and pretreatment studies
Abstract.
The preparation and the pretreatment of Pd/ZnO catalysts were studied for methanol steam
reforming. The presence of nitric acid in Pd nitrate precursor significantly altered the porosities and
crystalline structures of the ZnO support. The dissolution of ZnO and extent of mixing between the
Zn2 + and Pd2 + cations during catalyst preparation may have an impact on the PdZn alloy formation
and its catalytic properties. The pretreatment of Pd/ZnO, which is critical to the PdZn alloy
formation, depends not only on the reduction temperature but also on the reaction conditions under
which hydrogen is formed.
Keywords: Fuel cell fuel processing; Methanol steam reforming; Pd/ZnO catalyst
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