以三相催化技術合成正丁基苯基醚的研究（III）—續流攪拌式反應器的可行性探討

Abstract

Synthesizing n-butyl phenyl ether by triphase catalysis was carried out in a continuous-flow stirred vessel reactor (CFSVR) under the optimal conditions determined by referring the results obtained from a batch reactor. The effects of variables, including agitation speed, catalyst deactivation, the amount of catalyst, concentrations of reactants in organic and aqueous phases, the volumetric flow rate of organic and aqueous phases, and reaction temperature, on the reaction were investigated. The experimental results reveal that the conversion of n-butyl bromide maintains a constant value when the agitation speed is over 400 rpm. The reaction rate increases with the increasing amount of catalyst and temperature. However, the conversion of n-butyl bromide decreases with the increase of the volumetric flow rate of the organic and aqueous phases. With the increase of the reactant concentration (n-butyl bromide) in the organic phase, the conversion of n-butyl bromide will at first maintain a fixed value and then decreases. On the other hand, with the increase of the reactant concentration (sodium phenolate) in the aqueous phase, the conversion of n-butyl bromide will increase first and then decreases. As to the stability, the triphase catalyst slightly loses its activity during a long-time operation.