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Sulfonic Acid

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英文: Abstract: Methanesulfonic acid method was used to prepare five acylated chitins.Except heptanoyl chitin, four of them,i.e.acetyl chitin,propionyl chitin,butyryl chitin and hexanoyl chitin,had high degree of substitution(from 1.5 to 2.0)and exhibited lyotr

中文: 文摘:四种羧酰化甲壳素即乙酰化、丙酰化、丁酰化和己酰化甲壳素在二氯乙酸溶液中均呈现胆甾型溶致液晶相.临界浓度随侧基长度增加而略有增加,衍生物的临界浓度明显都比原甲壳素高许多,这些规律都可以用链刚性的变化来解释.四种羧酰化甲壳素在剪切时均能形成条带织构,而且能形成条带织构的最低浓度有明显差别,随侧基长度增加而提高,进一步表明侧基较长,液晶性减少.        更详细...
英文: Applications and development of perfluorinated sulfonic acid resin are summarized, its structure, performance and applications in PEMFC are discussed.

中文: 摘要介绍了全氟磺酸树脂的应用发展概况,讨论了膜的结构、性能以及它们在质子交换膜燃料电池中的应用。        更详细...
英文: Diisopropyl succinate was synthesized from succinic acid and isopropanol with p-methyl benzenesulfonic acid as catalyst.

中文: 摘要以丁二酸和异丙醇为原料及对甲基苯磺酸为催化剂,催化合成丁二酸二异丙酯。        更详细...
英文: In this paper, the new development of research on copolymer scale inhibitor and dispersant was introduced in details from several aspects, such as natural polymer scale inhibitors, carboxylic acid copolymer scale inhibitors, sulfonic acid copolymer scale

中文: 从天然聚合物、羧酸类聚合物、磺酸类聚合物、含磷聚合物以及新型绿色聚合物等几个方面,介绍了我国聚合物阻垢剂的研究新进展,并提出其今后发展的一些建议。        更详细...
英文: Review on the characteristics of organo-sulfonic acid manufacturing wastewater and the recent development of treatment methods, especially the progress in advanced oxidation process, complexation extraction and polymeric resins adsorption was presented.

中文: 摘要本文综述了芳香磺酸类有机化工废水的污染特徵和处理方法的现状,特别对高级氧化法、络合萃取法、液膜萃取法及树脂吸附法的研究进展作了重点阐述。        更详细...
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