Catalytic oxidation of sulfide ions over nickel hydroxides

被引:17
作者
Andreev, A [1 ]
Khristov, P [1 ]
Losev, A [1 ]
机构
[1] BULGARIAN ACAD SCI,INST GEN & INORGAN CHEM,BU-1113 SOFIA,BULGARIA
关键词
oxidation; nickel hydroxide; S2-;
D O I
10.1016/0926-3373(95)00045-3
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 catalytic sulfide ion oxidation by oxygen to elemental sulfur over beta-Ni(OH)(2) and LiNiO2 has been studied. As a result of experimental investigation performed, a reaction mechanism is suggested which involves heterogeneous and homogeneous processes. Dioxygen activation in the heterogeneous process proceeds via a redox Ni2+ <-> Ni3+ transition and participation of OH- groups. The active HO2- species thus formed carries on the reaction in homogeneous phase. Nickel hydroxides are promising catalysts for practical application.
引用
收藏
页码:225 / 235
页数:11
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