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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4254

Title: Intensification of instantaneous heterogeneous reaction by simple salts and charged microphase
Authors: HASNAT, A
ROY, S
Keywords: reversible-reactions
micellar catalysis
absorption
diffusion
kinetics
co2
Issue Date: 1998
Publisher: AMER INST CHEMICAL ENGINEERS
Citation: AICHE JOURNAL, 44(3), 656-666
Abstract: The mass-transfer rate for the instantaneous heterogeneous reaction between N,N-diethylaniline (organic phase) and HCl in the aqueous phase was determined in the presence of a number of supporting electrolytes, that is, NaCl, SrCl2, AlCl3, and cetyltrimethyl ammonium bromide surfactant micelle. Both the simple salts and the cationic surfactant enhance the mass transfer of the reactive H+ ion, the effectiveness being in the order of CTAB > AlCl3 > SrCl2 > NaCl. The experimentally observed enhancement factor for the reaction in the presence of the supporting electrolytes ranges from 1.3 to 6. This enhancement is explained on the basis of the "ion-coupling" effect that augments the diffusive fluxes of the more mobile ionic species in a multi-ion system. The film-theory approximation is used to obtain theoretical estimates of the enhancement factor, and these are found to be in reasonably good agreement with the experimentally obtained values.
URI: http://dx.doi.org/10.1002/aic.690440314
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4254
http://hdl.handle.net/10054/4254
ISSN: 0001-1541
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