Raman scattering from ammonia adsorbed on the amorphous silica surface

Cherry Ann Murray; Thomas J. Greytak

doi:10.1063/1.438724

Raman scattering from ammonia adsorbed on the amorphous silica surface

Cherry Ann Murray, Thomas J. Greytak

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24 Scopus citations

Abstract

We have performed measurements of the perturbations of the Raman spectrum of ammonia molecules due to adsorption on the surface of porous Vycor glass. The spectrum of hydrogen bonded NH₃ is studied as a function of coverage and related to changes in the substrate surface phonon spectrum. More strongly chemisorbed ammonia species are also observed. When NH₃ is adsorbed on a partially deuterated surface we observe a slow chemical reaction in which the adsorbed NH₃ exchanges hydrogen with a surface deuteroxyl group: we observe in addition to the changes due to NH₃ interacting with OH groups the appearance of adsorbed NH₂D and the near complete replacement of surface OD with OH.

Original language	English (US)
Pages (from-to)	3355-3365
Number of pages	11
Journal	The Journal of chemical physics
Volume	71
Issue number	8
DOIs	https://doi.org/10.1063/1.438724
State	Published - 1979
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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abstract = "We have performed measurements of the perturbations of the Raman spectrum of ammonia molecules due to adsorption on the surface of porous Vycor glass. The spectrum of hydrogen bonded NH3 is studied as a function of coverage and related to changes in the substrate surface phonon spectrum. More strongly chemisorbed ammonia species are also observed. When NH3 is adsorbed on a partially deuterated surface we observe a slow chemical reaction in which the adsorbed NH3 exchanges hydrogen with a surface deuteroxyl group: we observe in addition to the changes due to NH3 interacting with OH groups the appearance of adsorbed NH2D and the near complete replacement of surface OD with OH.",

author = "Murray, {Cherry Ann} and Greytak, {Thomas J.}",

year = "1979",

doi = "10.1063/1.438724",

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AU - Murray, Cherry Ann

AU - Greytak, Thomas J.

PY - 1979

Y1 - 1979

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AB - We have performed measurements of the perturbations of the Raman spectrum of ammonia molecules due to adsorption on the surface of porous Vycor glass. The spectrum of hydrogen bonded NH3 is studied as a function of coverage and related to changes in the substrate surface phonon spectrum. More strongly chemisorbed ammonia species are also observed. When NH3 is adsorbed on a partially deuterated surface we observe a slow chemical reaction in which the adsorbed NH3 exchanges hydrogen with a surface deuteroxyl group: we observe in addition to the changes due to NH3 interacting with OH groups the appearance of adsorbed NH2D and the near complete replacement of surface OD with OH.

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DO - 10.1063/1.438724

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JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 8

ER -

Raman scattering from ammonia adsorbed on the amorphous silica surface

Abstract

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