它是酚与甲醛在一种碱性催化剂作用下缩聚的聚合物。
It is a condensation polymer of phenol and formaldehyde activated with an alkaline catalyst.
依据实验结果，提出了固体酸催化剂作用下的液相酯化反应机理。
Based on the experimental results the mechanism of liquid-phase esterification catalyzed by solid acid is suggested.
对聚苯乙烯体系，在不同催化剂作用下表现出不同的催化裂解行为。
For polystyrene, it was concluded that different catalysts had different effects on its degradation behaviors.
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