Interactions between bioactive ferulic acid and fumed silica by UV-vis spectroscopy, FT-IR, TPD MS investigation and quantum chemical methods.
The interactions of bioactive ferulic acid with fumed silica were studied by UV/vis spectroscopy, FT-IR, TPD MS techniques and quantum chemical methods. It was found that surface complexes may form through phenol or carboxyl group of ferulic acid depending on its coverage value. The structure of surface complexes and mechanisms of the ferulic acid chemosorption on the silica surface are discussed. The kinetic parameters of the chemical reactions on silica surface are calculated. The mechanisms of thermal transformations of the ferulic chemosorbed surface complexes are proposed.
Kulik
T V
TV
O.O.Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine, 17 Gen. Naumov str., Kyiv 03164, Ukraine. tanyakulyk@gala.net
Lipkovska
N A
NA
Barvinchenko
V N
VN
Palyanytsya
B B
BB
Kazakova
O A
OA
Dovbiy
O A
OA
Pogorelyi
V K
VK
D000327:Adsorption; D003373:Coumaric Acids / Q000737:chemistry*; D013058:Mass Spectrometry; D011789:Quantum Theory; D012822:Silicon Dioxide / Q000737:chemistry*; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics
D003373:Coumaric Acids; D012822:Silicon Dioxide; C004999:ferulic acid