articleScienceApr 4, 2025GREEN OA

Formation of hydrided Pt-Ce-H sites in efficient, selective oxidation catalysts

JYJi YangLJLorenz J. FallingSYSiyang YanBZBiluan ZhangPVPragya Verma

Lawrence Berkeley National Laboratory · Dalian University of Technology · +6 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Single-atom site catalysts can improve the rates and selectivity of many catalytic reactions. We have modified Pt 1 /CeO 2 single sites by combining them with molecular groups and with oxygen vacancies of the support. The new sites include hydrided (Pt 2+ -Ce 3+ H δ− ) and hydroxylated (Pt 2+ -Ce 3+ OH) sites that exhibit higher reactivity and selectivity to previous single sites for several reactions, including a ninefold increase in the reaction rate for carbon monoxide oxidation and a 2.3-fold improvement of propylene selectivity for oxidative dehydrogenation of propane. The atomic structure and reaction steps of these sites were determined with in situ and ex situ spectroscopy techniques and theoretical…

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53
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21.50
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100%
References
79
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Authors

21

Topics & keywords

Topics
Keywords
  • Dehydrogenation
  • Selectivity
  • Catalysis
  • Carbon monoxide
  • Propane
  • Chemistry
  • Reactivity (psychology)
  • Inorganic chemistry
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