2006
DOI: 10.1016/j.jcat.2006.04.012
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Hydride formation and stability on a Pd–SiO2 thin-film model catalyst studied by TEM and SAED

Abstract: Hydride formation was studied on Pd particles supported on SiO 2 , and the results were evaluated with reference to a corresponding ZnO-promoted Pd/SiO 2 catalyst reported recently. Pd particles (mean size, ~5 nm) were epitaxially grown on NaCl(001) cleavage faces and subsequently covered by a layer of amorphous SiO 2 , thereby maintaining their epitaxial orientation. The films were subjected to various hydrogen and annealing treatments in the temperature regime of 373-873 K, and their stability in an O 2 envi… Show more

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Cited by 18 publications
(3 citation statements)
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“…The absorbed hydrogen is strongly retained in the metal and is released at 320°C. This temperature is similar to the one reported by other authors [44]. The results also demonstrate that some transformations of the palladium occur as can be concluded from its decreasing capacity for hydrogen storage.…”
Section: Phenol Oxidation With Catalytic Membrane Reactors Prepared Bsupporting
confidence: 91%
See 1 more Smart Citation
“…The absorbed hydrogen is strongly retained in the metal and is released at 320°C. This temperature is similar to the one reported by other authors [44]. The results also demonstrate that some transformations of the palladium occur as can be concluded from its decreasing capacity for hydrogen storage.…”
Section: Phenol Oxidation With Catalytic Membrane Reactors Prepared Bsupporting
confidence: 91%
“…air, inert gas, hydrogen in [44]. The metal particles have been observed by HRTEM and selected area electron diffraction (SAED).…”
Section: Phenol Oxidation With Catalytic Membrane Reactors Prepared Bmentioning
confidence: 99%
“…Measurements were carried out at 100 °C to avoid the effects of the hydride phases observed by H 2 TPR (Figure ). These phases are usually considered solid solutions of hydrogen, which can interfere with the chemisorption results during the absorption/adsorption of hydrogen . Assuming spherical particles, particle size was calculated as d (nm) = 112/[ D (%)], where D is dispersion. ,, Dispersion decreased and particle size increased on used catalyst samples as compared to fresh ones (Table ).…”
Section: Resultsmentioning
confidence: 99%