Evidence for Ambient-Temperature Reversible Catalytic Hydrogenation in Pt-Doped Carbons
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.
X. Liu and Y. Tang and E. Xu and T. C. Fitzgibbons and G. S. Larsen and H. R. Gutierrez and H. Tseng and M. Yu and C. S. Tsao and J. V. Badding and V. H. Crespi and A. D. Lueking, "Evidence for Ambient-Temperature Reversible Catalytic Hydrogenation in Pt-Doped Carbons," Nano Letters, vol. 13, no. 1, pp. 137-141, American Chemical Society (ACS), Nov 2013.
The definitive version is available at https://doi.org/10.1021/nl303673z
Chemical and Biochemical Engineering
United States. Department of Energy. Office of Basic Energy Sciences
Keywords and Phrases
Active catalyst; Catalytic hydrogenation; Graphane; Heteroatoms; Nano-catalyst; Pt nanoparticles; Spillover; Catalysis; Catalysts; Chemical bonds; Chemisorption; Dehydrogenation; Density functional theory; Graphene; Hydrogen; Platinum; Raman spectroscopy; Hydrogenation; Catalysis
International Standard Serial Number (ISSN)
Article - Journal
© 2013 American Chemical Society (ACS), All rights reserved.
01 Nov 2013