A Study on Sorbitol Dehydration as Condensed and/or Adsorbed on High Disperse Silica by Means of Temperature-Programmed Desorption Mass Spectrometry

Authors

  • N. S. Nastasienko Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • V. M. Bogatyrev Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • B. G. Mischanchuk Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • V. A. Pokrovskiy Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine

Abstract

Sorbitol as condensed and/or adsorbed on high disperse silica surface has been studied by means of temperature-programmed desorption mass spectrometry. Three stages of water evolution have been observed and identified for all the samples. The values of activation energy have been calculated related to the first two stages (100°C, 170°C) as well as the intensity ratio for corresponding maxima. The first stage has been assigned to elimination of weakly bound water, the second one – to evolution of crystal hydrate water. The third stage (200–600°C) has been identified as that caused by sorbitol dehydroxylation.

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(1)
Nastasienko, N. S.; Bogatyrev, V. M.; Mischanchuk, B. G.; Pokrovskiy, V. A. A Study on Sorbitol Dehydration As Condensed and Or Adsorbed on High Disperse Silica by Means of Temperature-Programmed Desorption Mass Spectrometry. Him. Fiz. Tehnol. Poverhni 2011, 2, 361-365.

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Vol. 2 No. 3 (2011): Chemistry, Physics and Technology of Surface / Himia, Fizika ta Tehnologia Poverhni

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