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The catalytic properties of a Pt (4%) and a Rh (2.5%) catalyst on a low-surface area ceria support were determined as a function of hydrogen reduction in the temperature range between 373 and 723K and compared to those of silica-supported Rh (3%) subjected to equivalent treatments. Two reactions were studied: the ring opening of methylcyclobutane (MCB) as representative for structure-sensitive hydrocarbon...
Well-facetted Pt particles, epitaxially grown on (001) NaCl single crystal surfaces, were supported by thin films of crystalline ceria. Structural and morphological changes due to calcination and reduction have been studied after treating in oxygen (673K, 1h) and hydrogen exposure at increasing temperatures from 673 to 1073K. These changes were followed by (HR)TEM, electron diffraction and EELS, and...
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