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Chemisorption of hydrogen on the missing-row reconstructed Pt(110)-(1 × 2) surface has been studied by TPD, quantitative LEED, and DFT calculations. An (atypical) chemisorption site on the outermost close-packed rows with an ideal coverage of 0.5 ML (β2-state) is found. Adsorption sites on the (111) microfacets are occupied only at higher coverage (β1-state). After exposures of more than 400 L, the...
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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