Thermal transformation of bioactive caffeic acid on fumed silica seen by UV-Vis spectroscopy, thermogravimetric analysis, temperature programmed desorption mass spectrometry and quantum chemical methods
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- 作者：Tetiana V. Kulika ; tanyakulyk@i.ua" class="auth_mail" title="E-mail the corresponding author ; Natalia O. Lipkovskaa ; Valentyna M. Barvinchenkoa ; Borys B. Palyanytsyaa ; Olga A. Kazakovaa ; Olesia O. Dudika ; Alfré ; d Menyhá ; rdb ; c ; Krisztina Lá ; szló ; b
- 关键词：Temperature-programmed desorption mass spectrometry ; Surface complexes ; Silica ; Kinetic parameters ; Hydroxycinnamic acid derivatives ; Thermal transformation
- 刊名：Journal of Colloid and Interface Science
- 出版年：2016
- 出版时间：15 May 2016
- 年：2016
- 卷：470
- 期：Complete
- 页码：132-141
- 全文大小：2390 K
文摘
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The kinetic parameters of pyrolysis of caffeic acid surface complexes are calculated.
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Mechanisms of thermal transformation of the surface complexes are proposed.
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Pyrolysis of grafted ester groups produces ketene, vinyl, and acetylene derivatives.
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Immobilization of phenolic acids on silica surface improves greatly their stability.