alpha-phenylglycine extraction with trialkylmethylammonium chloride free and immobilized in a macroporous resin 1.equilibria

摘要

The phase equilibria of alpha-phenylglycine in sodium hydroxide solutions at pH=11 and 12 with the extractant trialkylmethylammonium chloride (Tomac) dissolved in kerosene and toluene and with Amberlite SAD-4 resin coated with Tomac at 30degC is reported.The extraction of alpha-phenylglycine and co-extraction of hydroxyl ions take place simultaneously by ion exchange reactions with the extractant.Phase equilibria are discussed as a function of alpha-phenylglycine concentration,pH of the aqueous phase and Tomac concentration either in theorganic phase or in resin phase.An equilibrium model,which considers the hydroxyl ion co-extraction,has been sued for the correlation of the equilibrium data.