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Metallurgical and Materials Transactions B
Published in: Metallurgical and Materials Transactions B 6/2007

01-12-2007

Chlorination of Zinc Oxide between 723 and 973 K

Authors: G. de Micco, G.G. Fouga, A.E. Bohé

Published in: Metallurgical and Materials Transactions B | Issue 6/2007

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Abstract

The kinetics of the chlorination of zinc oxide has been studied by thermogravimetry between 723 and 973 K. The starting temperature for the reaction of ZnO with chlorine is determined at about 498 K. The influence of gaseous flow rate, sample mass, temperature, and chlorine partial pressure in the reaction rate is analyzed. It is established that the reaction occurs under mixed control, being pore diffusion coupled with chemical reaction as the rate controlling step. An apparent reaction order of 0.5 with respect to chlorine partial pressure was determined. A kinetic model for the chlorination reaction of porous solids under mixed control determined an intrinsic reaction order of zero with respect to partial pressure of chlorine and an intrinsic activation energy of 249 kJ mol−1.
previous article On the Microstructure of a Freeze Lining of an Industrial Nonferrous Slag
next article Carbon Reduction Kinetics of NiO by Microwave Heating of the Separated Electric and Magnetic Fields

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Metadata
Title
Chlorination of Zinc Oxide between 723 and 973 K
Authors
G. de Micco
G.G. Fouga
A.E. Bohé
Publication date
01-12-2007
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 6/2007
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-007-9089-3

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