Acidity of HCl in neutral buffered chloroaluminate molten salts

被引：29

作者：

King, D ^{[1
]}

Mantz, R ^{[1
]}

Osteryoung, R ^{[1
]}

机构：

[1] N CAROLINA STATE UNIV,DEPT CHEM,RALEIGH,NC 27695

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1996年 / 118卷 / 47期

关键词：

D O I：

10.1021/ja961935b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Bronsted acidity of HCl in neutral buffered AlCl3:1-ethyl-3-methylimidazolium chloride (EMC) melts has been compared to the Bronsted acidity of HCl in acidic (55 mol % AlCl3) melts. The acidities were compared using the spectrophotometric indicator method. Arenes were used as the weak indicator bases. The acidity of HCl in the neutral buffered melts was found to be dependent on both the type of buffering agent (LiCl, KCl, and NaCl) and on the concentration of the metal cation in the melt. An enhancement in Bronsted acidity of HCl is observed in the neutral buffered melts, although to a lesser degree than that in the acidic melts. A Hammett acidity function was determined for a NaCl (originally 55 mol % AlCl3) buffered melt and a LiCl (originally 55 mol % AlCl3) buffered melt. For a HCl (1 atm)/NaCl/AlCl3:EMIC (originally 55 mol % AlCl3) buffered melt, H-0 = -11.3. H-0 -12.7 for a HCl (1 atm)LiCl/AlCl3:EMIC (originally 55 mol % AlCl3) buffered melt.

引用

页码：11933 / 11938

页数：6

共 18 条

[1] THE CHEMISTRY OF PROTONS IN AMBIENT-TEMPERATURE IONIC LIQUIDS - SOLUBILITY AND ELECTROCHEMICAL PROFILES OF HCL IN HCL-IMCL-ALCL3 IONIC LIQUIDS AS A FUNCTION OF PRESSURE (295 K) [J].