Site-specific reactivity of molecules with surface defects—the case of H 2 dissociation on Pt-Reference-Cited by-同舟云学术

Site-specific reactivity of molecules with surface defects—the case of H 2 dissociation on Pt

Published:2019-01-11 Issue:6423 Volume:363 Page:155-157
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

van Lent Richard¹²^ORCID,Auras Sabine V.¹^ORCID,Cao Kun¹^ORCID,Walsh Anton J.²^ORCID,Gleeson Michael A.²^ORCID,Juurlink Ludo B. F.¹^ORCID

Affiliation:

1. Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, Leiden 2333 CC, Netherlands.

2. Dutch Institute for Fundamental Energy Research, de Zaale 20, Eindhoven 5612 AJ, Netherlands.

Abstract

Broken on impact Two competing models have been proposed for the adsorption of molecular hydrogen on platinum surfaces. Both invoke dissociation at surface defects but differ on whether hydrogen molecules diffuse along the surface before encountering a defect or adsorb only if they initially impact a defect site. Van Lent et al. studied the sticking of hydrogen molecules from a molecular beam scanned across a curved platinum single-crystal surface that varied in the density and type of defects exposed. Modeling of the results was consistent only with the second model invoking direct impact. Science , this issue p. 155

Funder

The Netherlands Organisation for Scientific research

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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