ISSN:
1435-1536
Keywords:
Aerosil
;
silylation kinetics
;
trimethylchlorosilane
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The kinetics of the silylation of hydroxylated silica, the non-porous Aerosil using trimethylchlorosilane, under various reaction conditions has been investigated by a gravimetric technique and found to follow the law: $$\left[ {\frac{{1 + b}}{t}} \right]\ln \left\{ {\frac{{M_\infty }}{{M_\infty - M_t }}} \right\} - \frac{{M_t b}}{{M_\infty t}} = k_{\text{a}} $$ which represents a first order reaction retarded by one of its products. From this analysis, the activation energy in the temperature range 598 K to 673 K, was found to be 155 kJ mol−1. The reaction is independent of pressure at values greater than 15 torr.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00664728
Permalink
