Hydrolysis Reaction and Positronium Decay in Silica Gels
Final rept. 1991-1993
TEXAS CHRISTIAN UNIV FORT WORTH
Pagination or Media Count:
Positronium decay was used to measure pore size distribution in porous sol-gel glass. It was also used to determine the population of surface strained rings at various stages of firing and drying procedures. Rotational and translational diffusion of molecular liquids, semiconductor clusters, and fullerenes was investigated. Preferential adsorption, surface interactions and their effects on electronic transitions, vibrational relaxation, rotational and translational motion were discussed. Computer simulations for molecular motion of SF 6 and cyclohexane inside small pores were run as a function of temperature and pressure. Results were compared with experimental data. Experimental evidence for the pentavalent transitions state for TMOS and TEOS hydrolysis reactions were provided.
- Physical Chemistry
- Ceramics, Refractories and Glass