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Intensification of instantaneous heterogeneous reaction by simple salts and charged microphase

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Title Intensification of instantaneous heterogeneous reaction by simple salts and charged microphase
 
Creator HASNAT, A
ROY, S
 
Subject reversible-reactions
micellar catalysis
absorption
diffusion
kinetics
co2
 
Description 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.
 
Publisher AMER INST CHEMICAL ENGINEERS
 
Date 2011-07-15T11:15:17Z
2011-12-26T12:49:27Z
2011-12-27T05:50:11Z
2011-07-15T11:15:17Z
2011-12-26T12:49:27Z
2011-12-27T05:50:11Z
1998
 
Type Article
 
Identifier AICHE JOURNAL, 44(3), 656-666
0001-1541
http://dx.doi.org/10.1002/aic.690440314
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4254
http://hdl.handle.net/10054/4254
 
Language en