IDENTIFICATION OF COLLOIDAL MN(IV) IN PERMANGANATE OSCILLATING REACTIONS

被引：14

作者：

DOONA, CJ ^{[1
]}

SCHNEIDER, FW ^{[1
]}

机构：

[1] UNIV WURZBURG,INST PHYS CHEM,9-11 MARCUSSTR,W-8700 WURZBURG,GERMANY

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1993年 / 115卷 / 21期

关键词：

D O I：

10.1021/ja00074a038

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The responses of permanganate oscillating chemical reactions to factors that govern colloidal stability are examined. Various electrolytes are able to suppress oscillation in the MnO4--Mn2+-H2PO4- and MnO4--H2O2-H2PO4- systems, with the strength of the effect depending predominantly on the concentration, charge, and radius of the cation. The hydrophilic colloid gum arabic protects the oscillator against the influence of electrolytes, and the first permanganate oscillator without dihydrogen phosphate, arsenate, or vanadate ions has been designed (MnO4- + H2O2 + gum arabic). These results identify the central role of colloidal Mn(IV) in these oscillators.

引用

页码：9683 / 9686

页数：4

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