英语语法分析

By using cation exchange resin modified cerium sulfate as the catalyst, itaconate acid and methanol reacted to form dimethyl itaconate.

研究了以强酸性阳离子交换树脂为催化剂，环己烷作带水剂，冰醋酸与异戊醇合成乙酸异戊 酯的反应条件。