英语语法分析

Study on Acid Modified Niobic Acid Catalyst for Synthesis of 2, 5 - Dimethyl - 2, 4 - Hexadiene.

酸处理铌酸对合成2,5 -二甲基- 2,4 -己二烯催化作用的研究。

In this system, the water-washed niobic acid, acid-washed niobic acid and niobic acid for phosphoric acid-treated were studied.

本文分别对直接水洗法、酸水洗法以及磷酸处理铌酸催化剂进行了研究。

Using niobic acid as catalyst, cyclohexane as dehydrant, benzyl propionate was synthesized based on propionic acid and benzyl alcohol.

摘要以铌作催化剂，环己烷为带水剂，用丙酸和苯甲醇直接合成了丙酸芐酯。