Evidence for ambient-temperature reversible catalytic hydrogenation in Pt-doped carbons

Xiao Ming Liu, Youjian Tang, En Shi Xu, Thomas C. Fitzgibbons, Gregory S. Larsen, Humberto R. Gutierrez, Huan Hsiung Tseng, Ming Sheng Yu, Cheng Si Tsao, John V. Badding, Vincent H. Crespi, Angela D. Lueking

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Abstract

In situ high-pressure Raman spectroscopy, with corroborating density functional calculations, is used to probe C-H chemical bonds formed when dissociated hydrogen diffuses from a platinum nanocatalyst to three distinct graphenic surfaces. At ambient temperature, hydrogenation and dehydrogenation are reversible in the combined presence of an active catalyst and oxygen heteroatoms. Hydrogenation apparently occurs through surface diffusion in a chemisorbed state, while dehydrogenation requires diffusion of the chemisorbed species back to an active catalyst.

Original languageEnglish (US)
Pages (from-to)137-141
Number of pages5
JournalNano letters
Volume13
Issue number1
DOIs
StatePublished - Jan 9 2013

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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    Liu, X. M., Tang, Y., Xu, E. S., Fitzgibbons, T. C., Larsen, G. S., Gutierrez, H. R., Tseng, H. H., Yu, M. S., Tsao, C. S., Badding, J. V., Crespi, V. H., & Lueking, A. D. (2013). Evidence for ambient-temperature reversible catalytic hydrogenation in Pt-doped carbons. Nano letters, 13(1), 137-141. https://doi.org/10.1021/nl303673z