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浅草漫漫

银虫 (小有名气)

[求助] 求翻译

Chitosan is a polyaminosaccharide, normally obtained by alkaline deacetylation of chitin . Chitosan, even having a large amount of –NH2 group, is not found to be effective
for base catalyzed reactions . The generally used method is to treat with HCl and then to form chitosan beads by adding it into the NaOH solution. It will be a better choice to functionalize the chitosan avoiding the use of acids and alkalis to obtain active base catalyst.
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cmds1907

铁杆木虫 (著名写手)

【答案】应助回帖

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RXMCDM: 金币+1, 多谢应助! 2014-08-10 15:08:25
浅草漫漫: 金币+7, 翻译EPI+1, ★有帮助 2014-08-11 10:19:57
壳聚糖是一种氨基多糖,通常通过甲壳素碱性脱乙酰化获得(制备)。壳聚糖,甚至含有大量氨基(-NH2)基团的壳聚糖,没有发现其对碱催化反应是有效的。通常用盐酸处理的方法,然后将其添加入氢氧化钠溶液中形成壳聚糖珠。一个更好的选择是避免使用酸和碱功能化壳聚糖从而获得活性碱催化剂。
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