Title

A hybrid rheological model for particulate suspension in zeolite crystal growth

Authors

Authors

H. W. Song; O. J. Ilegbusi;A. Sacco

Comments

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Abbreviated Journal Title

J. Colloid Interface Sci.

Keywords

zeolites; particulate suspension; rheology; gel dissolution; SEMISOLID SLURRIES; FLOW BEHAVIOR; ALLOY; Chemistry, Physical

Abstract

A hybrid constitutive model is developed to represent the thixotropic behavior of particulate suspension during zeolite crystallization from solution. This model is valid over the complete solid fraction range typical for such a process. It employs two internal variables, agglomeration and contiguity, to describe the degree to which the gel particles form short- and long-range networks. The contiguity is used to weigh the effects of hydrodynamic to chain-like network deformation on the suspension viscosity. Heterogeneous nucleation and surface reaction-controlled crystal growth are assumed to describe the evolution of microstructure and solid fraction of gel and crystals. Such a model successfully captures the thixotropic behavior of zeolite particulate suspension by comparison of the predictions with a set of experimental data. (c) 2005 Elsevier Inc. All rights reserved.

Journal Title

Journal of Colloid and Interface Science

Volume

295

Issue/Number

2

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

562

Last Page

568

WOS Identifier

WOS:000235744600030

ISSN

0021-9797

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