Please use this identifier to cite or link to this item: http://nopr.niscpr.res.in/handle/123456789/46202
Title: Surface-mediated autoxidation of aqueous SO2 in ceramic powder suspensions
Authors: Bhargava, Rachna
Rani, Ashu
Gupta, K S
Issue Date: Sep-1992
Publisher: NISCAIR-CSIR, India
Abstract: In acetate buffered ceramic suspensions, if the ceramic concentration is not too high, the kinetics of autoxidation conforms to the rate law

Robs = Run + k5[H+]-1[Ceramic][S(IV)]2

where Run is the rate of uncatalyzed reaction and k5 is the rate constant for the surface catalyzed path. The rate of autoxidation is unaffected by oxygen partial pressure. Interestingly, the rate versus [ceramic] profile passes through a maximum indicating that the autoxidation mechanism involves the adsorption of both sulphur(IV) and dioxygen on particle surface.
Page(s): 683-687
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.31A(09) [September 1992]

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