Research on the Selective Electrocatalytic Reduction of SO2 to Recover S0 by Pb Electrode

被引：3

作者：

Liu, Xudong ^{[1
]}

Wang, Xiaoyang ^{[1
]}

Long, Jiaqi ^{[1
]}

Xie, Xiaofeng ^{[1
]}

Wu, Lin ^{[1
]}

Wang, Zhujiang ^{[1
]}

Fu, Yingxue ^{[1
]}

Chen, Hao ^{[1
]}

Xiang, Kaisong ^{[1
,2
,3
]}

Liu, Hui ^{[1
,2
,3
]}

机构：

[1] Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China

[2] Chinese Natl Engn Res Ctr Control & Treatment Heav, Changsha 410083, Peoples R China

[3] State Key Lab Adv Met Nonferrous Met, Changsha 410083, Peoples R China

来源：

METALS | 2023年 / 13卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Pb; SO2; S-0; surfactant; sulfur adhesion; CATALYTIC-REDUCTION; AQUEOUS SO2; SULFUR; CO; BISULFITE; MECHANISM;

D O I：

10.3390/met13030569

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Resource utilization of SO2 from flue gas is a key challenge for the green development of the smelting industry. Recovery of sulfur resources in the form of elemental sulfur (S-0), which has a high market demand and is a current focus in the field of SO2 treatment, can reduce the solid waste from desulfurization. In this study, it was found that Pb as a cathode material had good catalytic activity for the electrochemical reduction of SO2 and good selectivity towards elemental sulfur. However, the cathode suffers from sulfur poisoning. The problem was resolved by introducing surfactant, specifically sodium dodecyl benzene sulfonate (SDBS), which significantly lowered the sulfur content ratio on the surface of the electrode from 31.82% to 2.17%. Through the optimization of electrocatalytic parameters, this method enables efficient conversion of SO2 to S-0, achieving a selectivity of 83% at pH = 0.25 and E = -0.8 V (vs. SCE).

引用

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