A Geometrical Model for Chemically Bonded TMS and PDS Phases
作者： Gert E. Berendsen , Leo de Galan
DOI: 10.1080/01483917808060008
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摘要: Abstract A geometrical model is developed for monomeric TMS and PDS phases that are chemically bonded to silica. Using experimental data maximum surface coverage considering amorphous silica as a collection of distorted crystals, we calculate each nm2 the contains 2.3 modified hydroxyl groups, 1.3 free hydroxyl. groups 0.6 pairs respectively. From dimensions silane molecule it concluded molecules rigidly attached with an Si-O-Si bond angle between 120 140 degrees. The unreacted not completely screened but will be quite inaccessible on either phase. Very little area remains surface.
sci-hub.se 参考文章(34)
A. V. Kiselev, V. I. Lygin, Infrared spectra of surface compounds Wiley : distributed by Halsted Press. ,(1975)
W. Stöber, Adsorptionseigenschaften und Oberflächenstruktur von Quarzpulvern Colloid and Polymer Science. ,vol. 145, pp. 17- 46 ,(1956) , 10.1007/BF01502750
Fritz Ullmann, W. Foerst, Ullmanns Encyklopädie der technischen Chemie Urban & Schwarzenberg. ,(1951)
Walter Noll, Chemistry and technology of silicones ,(1968)
Heinrich Remy, Lehrbuch der anorganischen Chemie Akademische Verlagsgesellschaft. ,(1959)
Michael L. Hair, Infrared spectroscopy in surface chemistry ,(1967)
Linus Pauling, The Nature of the Chemical Bond ,(1939)
Alexander Frank . Wells, Structural inorganic chemistry ,(1945)
Joaquin Cortés, The application of temperature programmed desorption in the study of the surface of aerosil joint international conference on information sciences. ,vol. 56, pp. 233- 239 ,(1976) , 10.1016/0021-9797(76)90248-4
Karl Karch, Imrich Sebestian, István Halász, Preparation and properties of reversed phases Journal of Chromatography A. ,vol. 122, pp. 3- 16 ,(1976) , 10.1016/S0021-9673(00)82233-5