本文主要阐述了在合成低碳脂肪酸乙酯中采用3a型分子筛作脱水剂的基本原理和方法。
The basic principle and method of synthesis of lower fatty acid ethyl ester using 3a molecular sieves as dehydrating agent were described.
采用正交试验和条件试验，筛选出了一种以植酸、 苯甲酸钠、 钼酸钠和EDTA为基本组成的镍磷合金抗蚀防变色剂。
A new anti-tarnish agent has been screened out, based on phytic acid, sodium benzoate, sodium molybdate and EDTA by means of orthogonal analysis and conditional experiments.
介绍了杂多酸的基本特性及其负载型催化剂的研究进展，包括不同类型的催化剂载体。
The properties of the heteropoly acids and advances in heteropoly acids and their supported catalysts were reviewed, including different supports.
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