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Catalyzed CO oxidation: A newly designed high-pressure flow cell is utilized to study CO oxidation on Pt nanoparticles in situ by simultaneous quadrupole mass spectrometry and high-pressure X-ray photoelectron spectroscopy. The spectroscopy data show that the active catalyst consists of metallic Pt with both chemisorbed O and patches/shell of surface oxides.
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Porsgaard et al. (2013) studied this question.
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