| Summary: | 碩士 === 元智工學院 === 化學工程學系 === 84 === In organic synthesis, the use of phase transfer catalyst in
promotingoil-water mixed phase reactions has been well-
developed. In most cases, the reaction mechanism proposed by
Starks can be applied to understand the distribution of catalyst
in the phase equilibrium among the two phases.The rate
determining steps in Starks ion pair extraction mechanism
involves(i) rate of organic reaction (ii) mass transfer of
catalyst in two-phases(iii) equilibrium distribution of catalyst
between the mixed phase. Therefore,the understanding of the
catalyst distributing in two phase is very important in modeling
the reaction by phase transfer catalysis. The prupose of
present investigation is to determine the effects of equilibrium
distribution of the phase transfer catalyst, amount of catalyst
used, alkalinity, temperture, interaction of various organic
solvents and the water content in the oil phase. It is envisaged
that through these systematic studies on the distribution
coefficients, extraction constants and selectivities
coefficients to find out the situation of equilibrium
distributionof PTC in two-phases, in order to apply PTC
technique in organic syntheses.
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