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Carbon monoxide reduction of sodium sulfate mixed with sodium titanate
Author(s) -
Zou X.,
Avedesian M. M.,
Van heiningen A. R. P.
Publication year - 1993
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450710610
Subject(s) - carbon monoxide , inorganic chemistry , nucleation , chemistry , sodium , catalysis , sulfate , thermogravimetric analysis , sodium sulfate , activation energy , kinetics , organic chemistry , physics , quantum mechanics
The solid state reduction kinetics by carbon monoxide of sodium sulfate mixed with sodium titanate are studied in a thermogravimetric system at 670‐750°C. It is found that the reduction of this mixture is much faster than that of pure sodium sulfate. The conversion‐time curves of the model mixtures are sigmoidal in shape and well described by the nucleation and growth kinetic model. The activation energy is 420 kJ/mol. The influence of the CO and CO 2 , concentration, mass fraction of sodium titanate and addition of sodium sulfide catalyst are investigated. Based on the present experiments and literature results, a mechanism is proposed for the CO reduction.