摘要
为了揭示类芬顿反应中硫元素的作用与转化规律,以FeS、CuS、MnS等过渡金属硫化物为例,利用拉曼光谱仪对其与过氧化氢的氧化过程进行了原位检测,并与同时测得的不同硫形态5种含硫对照品(硫粉、硫酸钠、亚硫酸钠、硫代硫酸钠、硫化钠)的拉曼光谱特征峰进行对比分析。3种过渡金属硫化物的类芬顿反应过程中出现了470、215、150 cm^-1等单质S的特征峰,980、470 cm^-1等SO3^2-、SO4^2-的特征峰。表明在反应过程中存在过渡金属硫化物由S^2-向S、SO3^2-、SO4^2-的转化过程,揭示了硫化物在异相芬顿反应过程的化学反应机制。
In order to reveal the action and transformation of sulfur in Fenton like reaction,the commen transition metal sulfides in nature such as FeS,CuS,Mn S,were taken as the objects.The in-situ detection of their oxidation process by hydrogen peroxide was carried out by means of Raman spectrometer,and their different sulfur forms presented by five sulfur-containing reference materials( sulfur powder, sodium sulfate, sodium sulfite, sodium thiosulfate, sodium sulfide) were measured at the same time.In the process of Fenton like reaction of three kinds of transition metal sulfides,the characteristic peaks of 470 cm^-1,215 cm^-1,150 cm^-1,980 cm^-1,470 cm^-1,SO3^2-,SO4^2- appeared,which indicates that the transition metal sulfides changed from S^2- to S,SO3^2-,SO4^2- in the process of heterogeneous Fenton reaction.The reaction mechanism was revealed.
作者
韩迎春
常志禄
李文静
欧阳磊
HAN Yingchun;CHANG Zhilu;LI Wenjing;OUYANG Lei(School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Shenzhen Research Institute,Huazhong University of Science and Technology,Shenzhen 518052,Guangdong,China;Anyang Iron and Steel Stock Co.,Ltd.,Anyang 455000,Henan,China;School of Resources and Environment,Central South University for Nationalities,Wuhan 430074,China)
出处
《实验室研究与探索》
CAS
北大核心
2020年第5期50-53,84,共5页
Research and Exploration In Laboratory
基金
深圳市科技计划项目(JCYJ20170818164352257)。
关键词
过渡金属硫化物
拉曼光谱
类芬顿反应
硫形态转化
transition metal sulfides
Raman spectroscopy
Fenton like reaction
sulfur transformation
