Jump to main content
Jump to site search

Issue 3, 1995
Previous Article Next Article

Resonance Raman spectroscopic study of Methyl Red and Ethyl Red adsorbed on silica

Abstract

Resonance Raman spectra have been recorded from Methyl Red and Ethyl Red adsorbed from toluene solutions on to Aerosils 90, 130, 200 and 300. The spectra were obtained from samples with surface coverages down to θ= 0.01 and show clear evidence for the formation of protonated species. Adsorption data for both indicators, over a wide range of equilibrium concentrations, give satisfactory fits to Langmuir isotherms. Together with the spectroscopic data, the isotherms enable a determination of the densities of Brønsted acidic sites on the silica surface. Densities of acidic sites increase with silica surface area and after calcination at 300 °C.

Back to tab navigation

Article type: Paper
DOI: 10.1039/FT9959100499
Citation: J. Chem. Soc., Faraday Trans., 1995,91, 499-505
  •   Request permissions

    Resonance Raman spectroscopic study of Methyl Red and Ethyl Red adsorbed on silica

    A. Bisset and T. J. Dines, J. Chem. Soc., Faraday Trans., 1995, 91, 499
    DOI: 10.1039/FT9959100499

Search articles by author

Spotlight

Advertisements