复合助催化剂的类型及浓度对催化活性及相对分子质量分布都有显著的影响。
The effect of types and concentrations of co-catalysts on polymerization activities and MWD is remarkable.
钙基固体碱具有较高的醋交换制备生物柴油催化活性，且原料来源广、价格相对较低，是一类具有前景的用于生物柴油清洁生产的固体碱催化剂。
The calcium-based solid base catalysts were promising solid base catalysts for biodiesel production due to their high activities for transesterification and lower cost resources.
结果表明，复合有机胺类活性剂ST的加入可以在相对较长的时间内保持催化剂碱液的高催化活性，同时延长催化剂碱液的循环使用周期。
The experimental results demonstrated that adding organic amine ST like complex could effectively improve the catalyst stability, keeping high activity and prolonging running cycle.
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