Accession Number:

ADA181120

Title:

Emission Spectroscopic Evidence of Bronsted Acid Sites in a Calcinated Vycor Glass.

Descriptive Note:

Technical rept.,

Corporate Author:

CALIFORNIA UNIV LOS ANGELES DEPT OF CHEMISTRY AND BIOCHEMISTRY

Report Date:

1987-05-18

Pagination or Media Count:

23.0

Abstract:

The emission and excitation spectra of quinoline and 2,3-dichloroquinozaline embedded in a calcinated 600 C porous Vycor glass and dissolved in fluid solutions were recorded at various temperatures. The spectral characteristics and phosphorescence lifetimes of adsorbates were observed to be identical to those in 0.5 N sulphonic acid solutions, indicating that H transferred from the surface to the N-heterocyclics. The strong surface-adsorbate interaction is further revealed by the dynamic study of adsorbates at 77 and 4.2K.

Subject Categories:

  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE