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A Study on the Formation of Palladium Hydride in a Carbon-Supported Palladium Catalyst

2001; American Chemical Society; Volume: 105; Issue: 25 Linguagem: Inglês

10.1021/jp004535q

1520-6106

Nabin K. Nag,

Nanomaterials for catalytic reactions

The formation and stability of palladium hydride in a well-characterized Pd-on-carbon catalyst have been investigated by using temperature-programmed reduction (TPR), selective carbon monoxide (CO) chemisorption, and X-ray diffraction (XRD). Under experimental conditions that completely eliminated the possible formation of a Pd carbide phase (PdC) it has been found that the stability of the hydride phase and the H:Pd ratio therein decrease as a function of the percent Pd exposed.