TRAVELING-WAVE IN THE CHLORITE-THIOUREA REACTION

被引：24

作者：

SIMOYI, RH ^{[1
]}

MASERE, J ^{[1
]}

MUZIMBARANDA, C ^{[1
]}

MANYONDA, M ^{[1
]}

DUBE, S ^{[1
]}

机构：

[1] BRANDEIS UNIV,DEPT CHEM,WALTHAM,MA 02254

来源：

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS | 1991年 / 23卷 / 05期

关键词：

D O I：

10.1002/kin.550230507

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The oxidation of thiourea by chlorite within the pH range of 2 to 5.5 has been found to produce a single wave of chlorine dioxide in unstirred solutions. The wave has been studied in narrow tubes of varying diameters and in petri dishes. The wave appears after an induction period that depends on the acid concentration, the [ClO2-]/[CS(NH2)2] ratio, the temperature, and the diameter of the tube. The wave starts from the surface in a tube and from the edges in a petri dish. The rate of wave movement is proportional to the ratio and the acid concentration. Barium chloride and starch were used as indicators. The wave could be initiated electrochemically and by addition of a drop of solution containing chlorine dioxide. The chlorine dioxide is produced by the oxidation of chlorite by hypochlorous acid.

引用

页码：419 / 429

页数：11

共 26 条

[1] SYSTEMATIC DESIGN OF CHEMICAL OSCILLATORS .15. A NEW TYPE OF BROMATE OSCILLATOR - THE BROMATE-IODIDE REACTION IN A STIRRED-FLOW REACTOR [J].