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相間移動触媒
Wikipedia definition
1. Phase-transfer catalystIn chemistry, a phase transfer catalyst or PTC is a catalyst that facilitates the migration of a reactant from one phase into another phase where reaction occurs. Phase transfer catalysis is a special form of heterogeneous catalysis. Ionic reactants are often soluble in an aqueous phase but insoluble in an organic phase in the absence of the phase transfer catalyst. The catalyst functions like a detergent for solubilizing the salts into the organic phase.
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