Exchange in two-phase catalytic systems. Communication 1. Nucleophilic replacement of bromine in hexyl bromide by chlorine and the role of the solid salt M+C1−

Autor: Danilova, O. I., Esikova, I. A., Yufit, S. S.
Zdroj: Russian Chemical Bulletin; November 1986, Vol. 35 Issue: 11 p2215-2220, 6p
Abstrakt: 1.The acceleration of the nucleophilic replacement reaction of the bromine in hexyl bromide by chlorine in the two-phase catalytic system solid salt M+C1--organic phase is related to the increase in the surface area of the solid phase and the formation of subcolloidal particles bearing the active sites.2.The process follows the ordinary laws for a pseudo-first-order reversible reaction after preliminary activation of the solid salt.3.Increasing the molar ratio of KCl/RBr leads to an acceleration of the replacement process only up to a certain limiting value, which may be related to the presence of an equilibrium interaction between the active sites on the surface of the solid salt and the catalyst or a complex of the catalyst with the substrate.
Databáze: Supplemental Index
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