CATALYTIC-OXIDATION OF AQUEOUS HYDROGEN-SULFIDE IN THE PRESENCE OF SULFITE

被引：17

作者：

WERES, O ^{[1
]}

TSAO, L ^{[1
]}

CHHATRE, RM ^{[1
]}

机构：

[1] PACIFIC GAS & ELECT CO,SAN RAMON,CA

来源：

CORROSION | 1985年 / 41卷 / 06期

关键词：

AIR POLLUTION - Control - ELECTRIC POWER PLANTS - Geothermal Energy;

D O I：

10.5006/1.3582010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nickel sulfate catalyzes the reaction of hydrogen sulfide with oxygen in aqueous solution. This reaction was studied, and an empirical rate expression and a reaction mechanism were deduced. The rate of oxidation is independent of oxygen concentration and pH over the range investigated. The reaction rate is one half order in nickel, and it changes from second to first order in sulfide with increasing concentration. The oxidation reaction is an autocatalytic, free radical chain reaction. Nickel catalyzes the chain initiation step, and polysulfido radical ions propagate the chains. Colloidal sulfur is a major, frequently undesirable reaction product. Sodium sulfite suppresses formation of colloidal sulfur by converting it to thiosulfate.

引用

页码：307 / 316

页数：10

共 26 条

[1] OXIDATION OF SULPHIDE ION AT VERY LOW CONCENTRATIONS IN AQUEOUS SOLUTIONS [J].