Deep inelastic neutron scattering from chemisorbed hydrogen in potassium intercalated graphite

B. S. Schirato; K. W. Herwig; P. E. Sokol; J. W. White

doi:10.1016/0009-2614(90)87021-I

Deep inelastic neutron scattering from chemisorbed hydrogen in potassium intercalated graphite

B. S. Schirato, K. W. Herwig, P. E. Sokol, J. W. White

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The behavior of chemisorbed hydrogen in potassium intercalated graphite has been probed by inelastic neutron scattering at a mean momentum transfer, Q, of 39 Å^-1 using a resonance detector neutron spectrometer. At these high Q's the scattering is approximately described by the impulse approximation and information on the local environment of the hydrogen may be obtained. The observed scattering from hydrogen in the potassium intercalated graphite is nearly identical with that from hydrogen in a sample of bulk potassium hydride. This indicates that the hydrogen contained in the intercalate is in the form of potassium hydride molecules, in contrast with the case of physisorbed hydrogen in alkali metal intercalates where the hydrogen retains its molecular character.

Original language	English
Pages (from-to)	453-456
Number of pages	4
Journal	Chemical Physics Letters
Volume	165
Issue number	6
DOIs	https://doi.org/10.1016/0009-2614(90)87021-I
State	Published - Feb 2 1990
Externally published	Yes

Funding

This work was supported by NSF Grant DMR-8704288 and OBES/DMS support of the intense pulsed neutron source at Argonne National Laboratory under DOE Grant W-31-109-ENG-38. BSS acknowledgest he support of the division of educational programsa t Argonne National Laboratory.

Funders	Funder number
National Science Foundation	DMR-8704288
U.S. Department of Energy	W-31-109-ENG-38
Argonne National Laboratory

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title = "Deep inelastic neutron scattering from chemisorbed hydrogen in potassium intercalated graphite",

abstract = "The behavior of chemisorbed hydrogen in potassium intercalated graphite has been probed by inelastic neutron scattering at a mean momentum transfer, Q, of 39 {\AA}-1 using a resonance detector neutron spectrometer. At these high Q's the scattering is approximately described by the impulse approximation and information on the local environment of the hydrogen may be obtained. The observed scattering from hydrogen in the potassium intercalated graphite is nearly identical with that from hydrogen in a sample of bulk potassium hydride. This indicates that the hydrogen contained in the intercalate is in the form of potassium hydride molecules, in contrast with the case of physisorbed hydrogen in alkali metal intercalates where the hydrogen retains its molecular character.",

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T1 - Deep inelastic neutron scattering from chemisorbed hydrogen in potassium intercalated graphite

AU - Schirato, B. S.

AU - Herwig, K. W.

AU - Sokol, P. E.

AU - White, J. W.

PY - 1990/2/2

Y1 - 1990/2/2

N2 - The behavior of chemisorbed hydrogen in potassium intercalated graphite has been probed by inelastic neutron scattering at a mean momentum transfer, Q, of 39 Å-1 using a resonance detector neutron spectrometer. At these high Q's the scattering is approximately described by the impulse approximation and information on the local environment of the hydrogen may be obtained. The observed scattering from hydrogen in the potassium intercalated graphite is nearly identical with that from hydrogen in a sample of bulk potassium hydride. This indicates that the hydrogen contained in the intercalate is in the form of potassium hydride molecules, in contrast with the case of physisorbed hydrogen in alkali metal intercalates where the hydrogen retains its molecular character.

AB - The behavior of chemisorbed hydrogen in potassium intercalated graphite has been probed by inelastic neutron scattering at a mean momentum transfer, Q, of 39 Å-1 using a resonance detector neutron spectrometer. At these high Q's the scattering is approximately described by the impulse approximation and information on the local environment of the hydrogen may be obtained. The observed scattering from hydrogen in the potassium intercalated graphite is nearly identical with that from hydrogen in a sample of bulk potassium hydride. This indicates that the hydrogen contained in the intercalate is in the form of potassium hydride molecules, in contrast with the case of physisorbed hydrogen in alkali metal intercalates where the hydrogen retains its molecular character.

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DO - 10.1016/0009-2614(90)87021-I

M3 - Article

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SN - 0009-2614

VL - 165

SP - 453

EP - 456

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 6

ER -

Deep inelastic neutron scattering from chemisorbed hydrogen in potassium intercalated graphite

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