Contents of trace hydrocarbons in propylene have large influences on polyreaction of propylene, yield of catalyst, transformation ratio of propylene and degree of isotacticity of products.

• 丙烯中微量烃类杂质的含量对丙烯的聚合反应、催化剂的得率、丙烯的转化率以及产品的等规度都有较大的影响。