油脂酯交换催化剂有：常用酸碱催化剂、酶、固体碱、碘、金属配合物等。
The oil transesterification catalysts include usually used acid-base catalyst, solid base, lipase, iodine, metal complex, et al.
产生上述的差异主要与煅烧对催化剂颗粒度、分散性及酸碱性的改变有关。
That the calcination process will change the graininess, dispersity and acidity-basicity of the catalyst can explain the discrepancy of the above phenomena.
六组分过渡金属氧化物催化剂的表面酸碱性测定。
The surface acidity or basicity of six-component transition metal catalyst was studied.
催化剂的酸碱性可能是影响催化活性的关键因素。
The acidity and basicity of catalyst might be the key factors that influenced the catalytic activities.
她要知道酶催化，她需要知道这种酶，在酸碱环境下的反应和氧化还原反应。
She needs to know this enzyme works by both acid base chemistry, and oxidation reduction.
空气阴极中的催化膜由聚四氟乙烯和活性碳混合压辊而成，催化剂根据电解液的酸碱性而选择。
The residual electrolyte after separation flows back to electrolyzer. The catalytic membrane in air cathode is made of teflon and activated carbon through mixing and roll pressing.
它是多种反应的催化剂，如控制肌肉反应、维持神经系统功能、调节酸碱平衡等。
They serve as catalysts for many reactions such as controlling muscle responses, maintaining the nervous systems, and regulating acid-base balance.
按此机理，烯烃的质子化是酸碱反应过程。因此，催化剂的酸性和烯烃的碱性均较强时对反应是有利的。
According to the mechanism, olefin protonation is a process of acid-alkali reaction, so the reaction is easy to happen when the acidity of catalyst and the basicity of olefin are very strong.
按此机理，烯烃的质子化是酸碱反应过程。因此，催化剂的酸性和烯烃的碱性均较强时对反应是有利的。
According to the mechanism, olefin protonation is a process of acid-alkali reaction, so the reaction is easy to happen when the acidity of catalyst and the basicity of olefin are very strong.
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