| 氯化汞触媒的汞挥发速率 |
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| 引用本文： | 田祎, 邢奕, 刘景洋, 菅小东. 氯化汞触媒的汞挥发速率[J]. 工程科学学报, 2012, 34(8): 939-942. DOI: 10.13374/j.issn1001-053x.2012.08.017 |
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| 作者姓名： | 田祎 邢奕 刘景洋 菅小东 |
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| 作者单位： | 1. 北京科技大学土木与环境工程学院, 北京 100083; |
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| 摘 要： | 采用通量箱、比表面积分析仪、扫描电子显微镜和X射线光电子能谱仪测试了电石法聚氯乙烯(PVC)行业中高汞触媒、低汞触媒和废高汞触媒的汞挥发速率、比表面积、成分及汞形态.研究表明:高汞触媒、低汞触媒和废高汞触媒的汞挥发速率分别为1.04×10-7、5.90×10-8和2.47×10-4mg·g-1·min-1.高汞触媒使用后氯化汞被还原为单质汞,且汞吸附于触媒表面,导致废高汞触媒汞挥发速率远高于新汞触媒.
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| 关 键 词： | 触媒 氯化汞 挥发 吸附 汞 |
| 收稿时间： | 2011-07-20 |
Mercury evaporation rate of mercury chloride catalysts |
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| TIAN Yi, XING Yi, LIU Jing-yang, JIAN Xiao-dong. Mercury evaporation rate of mercury chloride catalysts[J]. Chinese Journal of Engineering, 2012, 34(8): 939-942. DOI: 10.13374/j.issn1001-053x.2012.08.017 |
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| Authors: | TIAN Yi XING Yi LIU Jing-yang JIAN Xiao-dong |
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| Affiliation: | 1. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Center of Cleaner Production and Circular Economy Research, Chinese Research Academy of Environmental Sciences, Beijing 100012 China;3. Chemical Registration Center, Ministry of Environmental Protection, Beijing 100012, China |
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| Abstract: | The mercury evaporation rate, specific surface area, catalyst composition, and mercury form of high-, low-, and waste high-mercury catalysts in the acetylene PVC industry were tested by the dynamic flux chamber, specific surface area analyzer, scanning electron microscopy and X-ray photoelectron spectroscopy, respectively. It is shown that the mercury evaporation rates of the high-, low-, and waste high-mercury catalysts are 1.04 × 10-7, 5.90 × 10-8, and 2.47 × 10-4 mg·g-1·min-1, respectively. Mercury chloride is reduced to elemental mercury after the high-mercury catalyst is used, and mercury is adsorbed on the surface of the waste mercury catalyst, causing the mercury evaporation rate of the waste high-mercury chloride catalyst much higher than that of the new. |
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| Keywords: | catalysts mercury chloride evaporation adsorption mercury |
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