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分析了原料中杂质对催化剂活性和稳定性的影响及脱除杂质的方法。不同来源的丙烯所含杂质不同 ,炼厂丙烯杂质主要是氮化物和双烯 ,而裂解丙烯杂质主要是双烯 ;苯的主要杂质是饱和烷烃和微量水 ,这些杂质对催化剂活性和稳定性都有影响。实验结果表明 ,杂质含量越高 ,催化剂的活性和稳定性越低 ,而采用强酸性阳离子交换树脂可以脱除丙烯中的杂质。
The influence of impurities on the activity and stability of catalyst and the method of removing impurities were analyzed. Different sources of propylene containing different impurities, refinery propylene impurities are mainly nitrides and dienes, and cracked propylene impurities are mainly dienes; the main impurities of benzene are saturated alkanes and trace water, these impurities on the catalyst activity and stability are influential. The experimental results show that the higher the impurity content, the lower the activity and the stability of the catalyst. However, the removal of impurities in the propylene by the strongly acidic cation exchange resin can be achieved.