Acid-base property of ethylammonium nitrate ionic liquid directly obtained using ion-selective field effect transistor electrode

被引：55

作者：

Kanzaki, Ryo

Uchida, Kumaki

Hara, Shota

Umebayashi, Yasuhiro

Ishiguro, Shin-ichi

Nomura, Satoshi

机构：

[1] Kyushu Univ, Dept Chem, Fac Sci, Higashi Ku, Fukuoka 8128581, Japan

[2] HORIBA Ltd, Minami Ku, Kyoto 6018510, Japan

来源：

CHEMISTRY LETTERS | 2007年 / 36卷 / 05期

关键词：

D O I：

10.1246/cl.2007.684

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ethylammonium nitrate (EAN) is a protic room-temperature ionic liquid and classified into an amphoteric solvent. The equilibrium constant K-S = [EtNH2][HNO3] has directly been obtained for the first time by using an ion-selective field effect transistor (ISFET) electrode. The obtained K-S value is of 10(-10.0) mol(2) dm(-6), indicating that the neutral EAN involves HNO3 and EtNH2 molecules as much as 1.0 x 10(-5) mol dm(-3), or the pH (= - log[HNO3]) is 5 at 298 K.

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页码：684 / 685

页数：2

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