栲胶脱硫过程中单质硫生成机理
Clean Coal Technology(2011)
Abstract
采用循环伏安法研究了栲胶脱硫过程中HS-和V5+之间的氧化还原反应。实验结果表明:在栲胶脱硫过程中,HS-和V5+之间的反应有多硫离子Sx2-生成,多硫离子是反应过程中的活性中间产物,其进一步转化可生成单质硫S8。随着反应物V5+浓度的增加,单质硫的生成速率增加。最后,提出了一种硫氢根HS-和V5+反应生成单质硫S8的自由基机理。
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Key words
free radical reaction mechanism,tannin extract desulfurization,elemental sulfur,polysulfide ion
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