Catalyst for preparing high purity taurine and use thereof

Abstract

Provided is a catalyst for preparing high-purity taurine, and the catalyst is N,N-disubstituted aminoethanesulfonic acid and has a structure represented by Formula I, in which Rand Rare each independently selected from alkyl, alkenyl, alkynyl, alkoxy, benzyl, sulfhydryl, thioether group, aryl, heteroaryl, amino, amide, imide, cyano, aldehyde group, carbonyl, carboxyl, sulfonic acid group, or ester group. Also provided is a method for preparing high-purity taurine, which adds the catalyst in an ammonolysis step for preparing taurine, thereby having effects of high yield, inhibition of impurity production and a reduced amount of ammonia used, etc. The catalyst has advantages of low cost, stable physical properties, and easy separation from the product. The preparation method is simple to operate with easily available raw materials and high yield, and can be employed for industrial production. Moreover, the purity of the prepared taurine can be up to 98% or higher.