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Diffuse reflectance fourier transform infrared spectroscopy of triacylglycerol and oleic acid adsorption on synthetic magnesium silicate
Author(s) -
Yates R. A.,
Caldwell J. D.,
Perkins E. G.
Publication year - 1997
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-997-0138-5
Subject(s) - oleic acid , silicate , adsorption , fourier transform infrared spectroscopy , magnesium , attenuated total reflection , chemistry , infrared spectroscopy , silica gel , infrared , diffuse reflectance infrared fourier transform , diffuse reflection , inorganic chemistry , chemical engineering , organic chemistry , catalysis , biochemistry , physics , optics , photocatalysis , engineering
Diffuse reflectance fourier transform infrared (FTIR) was used to observe adsorption complexes of triacylglycerol and oleic acid on silica gel and synthetic magnesium silicate. The spectra provide evidence of the nature of the surface interaction. Triacylglycerol was shown to be physically adsorbed to both adsorbents. Oleic acid was physically adsorbed to the silica gel, but both physically and chemically adsorbed to the magnesium silicate. The FTIR spectrum of magnesium silicate that was used to treat a degraded frying oil was similar to that of oleic acid adsorbed on magnesium silicate.