东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (5): 757-760.DOI: -

• 论著 • 上一篇    

水与非水磷酸体系质子电导率

车全通;王东;吕笑梅;何荣桓;   

  1. 东北大学理学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-05-15 发布日期:2013-06-22
  • 通讯作者: He, R.-H.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2006AA03Z224);;

Proton conductivities of phosphoric acid based hydrous and anhydrous systems

Che, Quan-Tong (1); Wang, Dong (1); Lü, Xiao-Mei (1); He, Rong-Huan (1)   

  1. (1) School of Sciences, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-05-15 Published:2013-06-22
  • Contact: He, R.-H.
  • About author:-
  • Supported by:
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摘要： 以咪唑和吡啶与磷酸组成非水质子导体体系,研究了该体系的非水质子电导率及质子传递机理,以考察有机含氮杂环化合物为质子载体的非水质子传递的可行性.研究表明,对于咪唑(吡啶)-磷酸非水体系,其质子迁移的主要影响因素是黏度;有机含氮杂环化合物不能像水分子一样起到降低磷酸黏度的作用,反而使其黏度增加.电导率的测定结果表明,非水条件下磷酸的自解离传递质子的能力优于磷酸与有机含氮杂环化合物共同传递质子的能力.对于咪唑-磷酸水溶液,其电导率除了与体系的黏度有关外,还与离子迁移数及迁移速率等有关.

关键词: 质子导体, 电导率, 非水质子传导, 黏度, 活化能

Abstract: Imidazole and pyridine were mixed with pure phosphoric acid to form anhydrous proton conducting electrolyte. Conductivities of phosphoric acid based anhydrous solutions and proton transfer mechanism were investigated for the feasibility that the nitrogenous heterocyclic compounds become the carrier for proton transfer under anhydrous conditions. The results indicated that the viscosity of the anhydrous system has a significant influence on the proton migration. The nitrogenous heterocyclic compounds could not act as water molecules to decrease but increase the viscosity of phosphoric acid. The results of conductivity showed that the proton transferability due to self-ionization and self-dehydration of phosphoric acid is superior to that of both phosphoric acid and nitrogenous heterocyclic compounds. As to the imidazole-phosphoric acid aqueous solutions, its conductivity relates to the number of migrating ions and migration rate in addition to the viscosity of the system.

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