Method for preparing phenolic resin by adopting pyrrole acidic ionic liquid as catalyst
A technology of acidic ionic liquid and phenolic resin, which is applied in the field of ionic liquid catalysis, can solve the problems of low catalyst activity, long time consumption, and low yield, and achieve the effects of good selectivity, high yield, and simple preparation
Inactive Publication Date: 2019-04-05
CHANGZHOU UNIV
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Abstract
The invention belongs to the field of ionic liquid catalysis, in particular to a method for preparing phenolic resin by adopting a pyrrole acidic ionic liquid as a catalyst. The method includes adopting phenol and formaldehyde as raw materials and the pyrrole acidic ionic liquid as a catalyst to catalyze and prepare the phenolic resin; and after the reaction is finished, filtering and separating phenolic resin balls when the resin is hot, cooling the filtrate water phase to below 10 DEG C, automatically separating the ionic liquid and the water, and separating the pyrrole acidic ionic liquid to reuse. The ionic liquid adopted by the method has the advantages of simple preparation process, low price, high catalyst efficiency, short condensation reaction time, reusability of the ionic liquid, smooth surface of the prepared phenolic resin balls, uniform diameter of the balls, and high yield of products with a target bead diameter of 0.8-1.0 mm.
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IonSmooth surface +6
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