Analytical Sciences

Abstract − Analytical Sciences, 19(3), 429 (2003).

Infrared Spectroscopic Analyses of Transformations of Chemical Species on the Silica Highly-Reacted with Gaseous BF3
Toshifumi YOSHIDOME,*  Zhongyuan DANG,** and Barry A. MORROW**
*Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
**Department of Chemistry, University of Ottawa, 10 Marie Curie Street, Ottawa, Ontario K1N 6N5, Canada
Transformations of chemical species formed by the reaction of gaseous BF3 with high pressure and silica preheated at 473 and 1093 K were studied with the use of infrared absorption spectrometry. The species containing -BF2 and the species containing >BF were transformed to each other on the highly-reacted silica depending on the pressure of BF3 in cell, and some of the species containing -BF2 were also desorbed without their transformations to the species containing >BF. H2O played important roles in these transformations.