The autocatalytic model of nucleation is used to study the crystallization of zeolite ZSM-5 in five systems differing in the Al content of the starting gel. The crystallization kinetics and the nucleation kinetics are examined by SEM and X-ray diffraction. Experimental evidence is presented for the validity of the autocatalytic nucleation model. The two kinds of nucleation (heterogeneous and autocatalytic) processes adequately explain all the crystallization curves.
Kinetic study on the nucleation of (Na,TPA)-ZSM-5 zeolite
GOLEMME, Giovanni
;CREA F.;
1991-01-01
Abstract
The autocatalytic model of nucleation is used to study the crystallization of zeolite ZSM-5 in five systems differing in the Al content of the starting gel. The crystallization kinetics and the nucleation kinetics are examined by SEM and X-ray diffraction. Experimental evidence is presented for the validity of the autocatalytic nucleation model. The two kinds of nucleation (heterogeneous and autocatalytic) processes adequately explain all the crystallization curves.File in questo prodotto:
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