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化工学报  2012 

非平衡碘负离子转化二氧化碳

DOI: 10.3969/j.issn.0438-1157.2012.10.041, PP. 3297-3303

Keywords: CO2,碘负离子,电晕放电,负高压

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Abstract:

以直流脉冲负高压电晕放电形式,通过加入电子亲和能较高的碘气,在完全电负性离子体条件下资源化处理CO2。考察了进气流量、高压放电频率和原料摩尔比对CO2转化率的影响。结果表明:70℃时,利用碘负离子成功将CO2还原生成了CI4,其产率随着CO2流量的增加而减少。当进气流量0.06L·min-1、放电频率9.608kHz,n(I2)/n(CO2)为2.5时,CO2转化率在碘负离子作用下达到88.71%。另外,对碘负离子和CO2还原反应机理进行了初步探讨。

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