| NOx和/或NH3气氛下SO2在高岭土表面非均相转化的实验研究 |
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| 引用本文： | 焦坤灵,王雪薇,张连科,李玉梅,孙鹏,武文斐. NOx和/或NH3气氛下SO2在高岭土表面非均相转化的实验研究[J]. 环境科学学报, 2016, 36(11): 3952-3958 |
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| 作者姓名： | 焦坤灵 王雪薇 张连科 李玉梅 孙鹏 武文斐 |
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| 作者单位： | 1. 内蒙古科技大学能源与环境学院, 包头 014010;2. 内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室, 包头 014010,1. 内蒙古科技大学能源与环境学院, 包头 014010,1. 内蒙古科技大学能源与环境学院, 包头 014010,1. 内蒙古科技大学能源与环境学院, 包头 014010,1. 内蒙古科技大学能源与环境学院, 包头 014010,1. 内蒙古科技大学能源与环境学院, 包头 014010;2. 内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室, 包头 014010 |
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| 基金项目： | 内蒙古自治区自然科学基金（No.2014MS0219，2015MS0408） |
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| 摘 要： | 利用自制气溶胶反应器研究了NO_x和/或NH_3气氛下SO_2在高岭土表面的非均相转化过程,应用扫描电镜(SEM)对高岭土颗粒物形貌进行了表征.结果表明:高岭土颗粒表面的SO_2非均相转化致使其成分和形貌产生了较大变化.相同实验条件下,SO_2转化的协同作用程度由高到低依次为NH_3、NO_x/NH_3和NO_x气氛,相对湿度40%、有光照条件下,SO_2转化量增幅最高可分别达125%、75%和50%.所有气氛下,协同作用在无光照时在高相对湿度(40%~70%)区间更为突出,有光照时其显著性则体现在低相对湿度(20%~40%)区间.SO_2、NO_x、NH_3三者共存时,在高岭土颗粒表面发生的非均相反应过程既有协同作用又存在竞争反应.
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| 关 键 词： | 气溶胶反应器 NOx/NH3 SO2 高岭土 非均相转化 |
| 收稿时间： | 2016-04-08 |
| 修稿时间： | 2016-05-01 |
Experimental study of SO2 heterogeneous conversion under NOx and/or NH3 conditions on the surface of kaolin |
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| JIAO Kunling,WANG Xuewei,ZHANG Lianke,LI Yumei,SUN Peng and WU Wenfei. Experimental study of SO2 heterogeneous conversion under NOx and/or NH3 conditions on the surface of kaolin[J]. Acta Scientiae Circumstantiae, 2016, 36(11): 3952-3958 |
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| Authors: | JIAO Kunling WANG Xuewei ZHANG Lianke LI Yumei SUN Peng WU Wenfei |
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| Affiliation: | 1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010;2. Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010,1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010,1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010,1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010,1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010 and 1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010;2. Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010 |
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| Abstract: | The heterogeneous conversion of SO2 on the surface of kaolin in NOx and/or NH3 atmosphere was investigated by using a self-made aerosol reactor. SEM was used to analyze the morphologies of kaolin particles. The results show that the components and morphologies of kaolin surface change significantly with the SO2 heterogeneous conversion. Under the same experimental conditions of the relative humidity (RH=40%) with light, the extent of synergism during the reaction was NH3, NOx and NH3 combined, and NOx by descending order and the maximum amount of SO2 conversion can increase by 125%,75% and 50%, respectively. In various atmospheres, the synergy is more significant at the conditions of high RH(40%~70%) with light and low RH (20%~40%) without light. Synergies coexist with competitive reaction in the SO2 heterogeneous conversion process when SO2, NOx, and NH3 exist in the atmosphere simultaneously. |
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| Keywords: | aerosol reactor NOx/NH3 SO2 kaolin heterogeneous conversion |
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