Citation: Yue Hua CHEN, Gou Lin GUO, You Chi TANG, Chun ZHAI. NONLINEAR DYNAMICS IN THE SOL-GEL PROCESS[J]. Chinese Chemical Letters, ;1995, 6(7): 621-624. shu

NONLINEAR DYNAMICS IN THE SOL-GEL PROCESS

Yue Hua CHEN ^a,b ,
Gou Lin GUO ^a,b ,
You Chi TANG ^a,b ,
Chun ZHAI ^a,b

a Department of Chemistry, Peking University, Beijing 100871;
b National Laboratory for Structural Chemistry of Unstable and Stable Species

Received Date: 23 August 1994

²⁹Si NMR is used to measure the concentration of the various functional groups in an acid catalyzed Si(OEt)₄:EtOH:H₂O sol-gel systems.The corresponding rate expressions for the reactions are shown in equations(1-3).The non-linear dynamics in the sol-gel process has been discussed.The molecular structure is changeable as the reactions proceed and the diffusion of clusters is spatially constrained.These factors iead to an anomalous kinetics, The overall rate coefficients have been got from numerical solution.
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