The Distribution and Dissociation Equilibria of Phase-Transfer Catalyst Tricaprylmethylammonium Chloride and Its Aqueous-Phase Mass Transfer

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Satoru Asai¹  Yousuke Furuichi¹  Hidemi Nakamura¹ 

[1] Department of Chemical Engineering, University of Osaka Prefecture

关键词: Mass Transfer;    Phase-Transfer Catalyst;    Aliquat 336;    Distribution Equilibrium;    Dissociation Equilibrium;    Diffusivity;    Extraction;    Quaternary Ammonium Salt;   

DOI  :  10.1252/jcej.24.653

来源: Maruzen Company Ltd

【 摘 要 】

References(13)Cited-By(11)The distribution and dissociation equilibria of a representative phase-transfer catalyst, tricaprylmethylammonium chloride (Aliquat 336; Q+Cl–), were measured for the systems of n-butyl acetate–water, toluene–water, n-butyl acetate–aqueous NaCl solutions and toluene–aqueous NaOH solutions. The evaluated distribution coefficients of Q+Cl– and the OH–-substituted derivative (Q+OH–) were correlated as a function of the ionic concentrations in the aqueous phases. The dissociation constants of Q+Cl– and Q+OH– in the aqueous phase could be regarded as being identical.The diffusivities of Q+Cl– in water and in n-butyl acetate, and the ionic diffusivity of Q+ in the aqueous phase were measured. The aqueous-phase mass transfer of Q+Cl– could be quantitatively explained as that with an instantaneous reversible dissociation reaction.

【 授权许可】

Unknown