非平衡碘负离子转化二氧化碳

doi:10.3969/j.issn.0438-1157.2012.10.041

化工学报 ›› 2012, Vol. 63 ›› Issue (10): 3297-3303.DOI: 10.3969/j.issn.0438-1157.2012.10.041

非平衡碘负离子转化二氧化碳

郭利¹, 向小凤¹, 伍星¹, 马晓迅¹, 夏亚沈²

1. 陕北能源先进化工利用技术教育部工程研究中心, 陕西省洁净煤转化工程技术研究中心, 西北大学化工学院, 陕西西安 710069;
2. HyChar研究所, 美国波士顿 02466

收稿日期:2012-01-05 修回日期:2012-04-30 出版日期:2012-10-05 发布日期:2012-10-05
通讯作者: 马晓迅
作者简介:马晓迅,夏亚沈,郭利(1987- ),男,硕士研究生。

Conversion of carbon dioxide with non-equilibrium electronegative ions of iodine

GUO Li¹, XIANG Xiaofeng¹, WU Xing¹, MA Xiaoxun¹, XIA Yashen²

1. School of Chemical Engineering, Northwest University, Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei Energy, Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Xi'an 710069, Shaanxi, China;
2. HyChar Energy, LLC, Newton, MA 02466, USA

Received:2012-01-05 Revised:2012-04-30 Online:2012-10-05 Published:2012-10-05

摘要/Abstract

摘要： 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0.06 L·min^-1、放电频率9.608 kHz,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。

关键词: CO₂, 碘负离子, 电晕放电, 负高压

Abstract: Reducing process of carbon dioxide with electronegative ions of iodine,by DC-negative high voltage corona discharge,was investigated.The effects of gas flow,discharge frequencies and molar ratios of the iodine vapor to carbon dioxide on conversions of carbon dioxide were also examined.The results show that tetraiodomethane was synthesized successfully by electronegative ions of iodine at 70℃ and its yield decreases with increasing flow rates of CO₂. When the gas flow rate was 0.06 L·min^-1,the discharge frequency 9.608 kHz and molar ratio of I₂/CO₂ 2.5,the conversion of CO₂ with electronegative ions of iodine reached 88.71%.Reducing reaction mechanism of electronegative ions of iodine and CO₂ is also discussed.

Key words: carbon dioxide, electronegative ions of iodine, corona discharge, negative high voltage

中图分类号:

X701

郭利, 向小凤, 伍星, 马晓迅, 夏亚沈. 非平衡碘负离子转化二氧化碳[J]. 化工学报, 2012, 63(10): 3297-3303.

GUO Li, XIANG Xiaofeng, WU Xing, MA Xiaoxun, XIA Yashen. Conversion of carbon dioxide with non-equilibrium electronegative ions of iodine[J]. CIESC Journal, 2012, 63(10): 3297-3303.

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非平衡碘负离子转化二氧化碳

Conversion of carbon dioxide with non-equilibrium electronegative ions of iodine

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