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Solid State NMR Studies of the Adsorbed States of Formic Acid on Y Zeolites

Published online by Cambridge University Press:  15 February 2011

T. Michael Duncan  and
Robert W. Vaughan
T. Michael Duncan
Affiliation:
California Institute of TechnologyDivision of Chemistry and Chemical Engineering, Pasadena, CA 91125
Robert W. Vaughan
Affiliation:
California Institute of TechnologyDivision of Chemistry and Chemical Engineering, Pasadena, CA 91125
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Abstract

Several multiple-pulse double-resonance NMR techniques have been applied to isolate and characterize the spectra of the adsorbed states of formic acid on two Y zeolites. The two surface states, bidentatT3 and ynidentate, possess different motional properties and 13C - H cross-polarization techniques may be used to separate the spectra. The 13C chemical shift anisotropy is founa to iorrelate with the symmetry of the formate species. The H spectrum of the carbonyl hydrogen, selectively observed with the dipolardifference method, indicates that this hydrogen becomes more acidic upon adsorption.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 3: Symposium – Nuclear and Electron Resonance Spectroscopies Applied to Materials Science , 1980 , 259
Copyright
Copyright © Materials Research Society 1981

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References

REFERENCES

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