活性炭负载金属氧化物常温脱除低浓度NO

doi:10.3969/j.issn.0438-1157.2012.08.028

化工学报 ›› 2012, Vol. 63 ›› Issue (8): 2538-2543.DOI: 10.3969/j.issn.0438-1157.2012.08.028

活性炭负载金属氧化物常温脱除低浓度NO

杨娟，汪印，余剑，许光文

中国科学院过程工程研究所多相复杂系统国家重点实验室，北京 100190

收稿日期:2012-01-05 修回日期:2012-04-05 出版日期:2012-08-05 发布日期:2012-08-05
通讯作者: 许光文，余剑
基金资助:
国家高技术研究发展计划(863计划);国家高技术研究发展计划(863计划)

Removal of low concentration NO at room temperature using metal oxide supported on activated carbon

YANG Juan，WANG Yin，YU Jian，XU Guangwen

Received:2012-01-05 Revised:2012-04-05 Online:2012-08-05 Published:2012-08-05
Supported by:
The national high technology research and development program of China;The national high technology research and development program of China

摘要/Abstract

摘要： 在活性炭上负载了金属氧化物用于低浓度NO在常温下的脱除。活性炭在使用之前经过了氧化预处理，经过硝酸氧化处理后，活性炭表面的羰基和硝基数量均增加，对NO的脱除能力显著提高。在硝酸处理后的活性炭上负载了金属氧化物，其中Ce和Co负载的样品对NO的脱除效果最佳，与未负载的样品相比脱除量提高了约8倍。进一步研究发现被脱除的NO最终以金属硝酸盐的形式存在，说明NO在通过催化氧化吸附剂层时首先被氧化生成NO2，之后NO2与负载的金属氧化物反应生成了金属硝酸盐。

关键词: 低浓度NO, 活性炭, 金属氧化物, 常温

Abstract: Metal oxide supported on activated carbon was used to remove low concentration NO at room temperature.Activated carbon was pretreated by oxidant before use.After nitrate acid treatment，both carbonyl and nitro groups on the surface of activated carbon increased，and the capacity of removing NO also increased significantly.The activated carbon treated by nitrate acid was then deposited with metal oxide to further improve NO removal efficiency.It was found that samples containing Ce and Co oxide show the longest NO breakthrough time and highest removal capacity.Further study shows the final form of removed NO is metal nitrate，indicating that NO was first oxidized to NO2 when passing through the sorbent and then reacted with the supported metal oxide.

Key words: low concentration NO, activated carbon, metal oxide, room temperature

中图分类号:

TQ 426.6

杨娟，汪印，余剑，许光文. 活性炭负载金属氧化物常温脱除低浓度NO[J]. 化工学报, 2012, 63(8): 2538-2543.

YANG Juan，WANG Yin，YU Jian，XU Guangwen. Removal of low concentration NO at room temperature using metal oxide supported on activated carbon[J]. CIESC Journal, 2012, 63(8): 2538-2543.

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活性炭负载金属氧化物常温脱除低浓度NO

Removal of low concentration NO at room temperature using metal oxide supported on activated carbon

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