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黄二波

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[交流] 碳纳米管的羧基化 测定羧基含量 酸碱滴定

在用硫酸和硝酸的混酸处理了碳纳米管之后,期望碳纳米管上面被氧化连接上羧基,那么为了测量羧基的含量用酸碱滴定法的话该如何操作呢?一篇文献上这么说:The modified CNT materialwas quantitatively analyzed by titration to determine the COOH concentrations on the surface of the treated CNTs. In a typical experiment, the carboxylated CNTs were added into a 25-ml 0.04 N NaOH solution and stirred for 48 h to allow the solid CNT material to equilibrate with the NaOH solution. The mixturewas titrated with a 0.04 N HCl solution to determine the excess NaOH in the solution and the concentration of the carboxylates on CNTs.
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007李雪云

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同求,有文献说的是可以用电导滴定法,但具体操作没有指明,只给出一个测量的结果,
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6楼2015-06-25 09:37:49
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dtcywj

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NaOH不仅仅滴定羧基,还会滴定醇羟基和酚羟基,建议使用NaHCO3滴定
7楼2016-01-08 16:38:25
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