Calculation of Kinetic Parameters for Crystallization Processes

TCE

The Chemical Educator

ISSN: 1430-4171 (electronic version)

Table of Contents

Abstract Volume 7 Issue 1 (2002) pp 19-22

Calculation of Kinetic Parameters for Crystallization Processes

Isaac Asencio, Fernando Dorado, Paula Sánchez and Justo Lobato*

Department of Chemical Engineering, University of Castilla- La Mancha. Campus Universitario s/n 13004 Ciudad Real, Spain
Received July 12, 2001. Accepted October 3, 2001

Published online: 18 January 2002

Abstract. In this work, kinetic data of crystallization processes have been determined by measurement of the intensities of reflection of X-ray diffraction spectra and modeled using the Avrami-Eroféev and Jander expressions. We have created a simple Microsoft Excel spreadsheet that allows students to calculate the kinetic data. Students will be able to calculate the kinetic parameters of any crystallization process, for example, hydrothermal crystallization of catalytic materials like zeolites. The possibility of using the spreadsheet with different models or expressions and discriminating among them is also validated by comparing the model results with experimental data (differential thermal analyses, DTA) from papers available in the recent literature.

Key Words: Laboratories and Demonstrations; physical chemistry; Hückel

(*) Corresponding author. (E-mail: psanchez@inqu-cr.uclm.es)

Article in PDF format (232KB) HTML format