在磺化反应中，采用共沸除水硫酸磺化法。
In the reaction of sulfonation, the azeotropic water removing, sulfuric acid was used as sulfonating agent.
以麦草碱木素为原料，采用氧化磺化法，制备了磺化碱木素减水剂。
The lignosulfonate water reducing agent was prepared via oxidation and sulfonation of wheat straw alkali lignin.
系统介绍了间苯二酚诸多的合成方法，并对其中的磺化法、异丙苯法、芳化法和取代法进行了简要的评述。
The synthesis methods of resorcinol were introduced systematically in this paper, and the summary comments for every means were made.
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