A dynamic nonisothermal model for triphase catalysis in organic synthesis

Desikan, Sridhar ; Doraiswamy, L. K. (1999) A dynamic nonisothermal model for triphase catalysis in organic synthesis Industrial & Engineering Chemistry Research, 38 (7). pp. 2634-2640. ISSN 0888-5885

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Official URL: http://pubs.acs.org/doi/abs/10.1021/ie980030z

Related URL: http://dx.doi.org/10.1021/ie980030z


Phase-transfer catalysis has been in use for over 3 decades, but triphase catalysis, where the phase-transfer catalyst is immobilized on a solid support, is of much more recent origin. Despite its significant advantages over soluble phase-transfer catalysts, triphase catalysis has not attracted industrial attention. One of the main reasons for this lack of industrial interest is the insufficient understanding of the complex diffusion-reaction processes involved. Significant insights into this problem can be gained by mathematical modeling of these reaction systems. Unfortunately, while a few studies have been reported on the mathematical modeling of triphase catalysis, none of them address the important problem of nonisothermal effects. In the present paper we develop a dynamic model for triphase catalytic systems that includes intraparticle heat-transfer effects. An important conclusion is that the catalyst exhibits maximum effectiveness (with an effectiveness factor greater than 1) at a particular reaction time and that it can be tailored to physically realize this enhanced conversion.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
ID Code:22893
Deposited On:25 Nov 2010 13:53
Last Modified:31 May 2011 04:45

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