| 钴离子改性的ZSM-5对低浓度NO吸附性能研究 |
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| 引用本文： | 张永春,薛全民,谭大志.钴离子改性的ZSM-5对低浓度NO吸附性能研究[J].大连理工大学学报,2005,45(4):487-491. |
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| 作者姓名： | 张永春 薛全民 谭大志 |
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| 作者单位： | 大连理工大学,精细化工国家重点实验室,辽宁,大连,116012;大连理工大学,精细化工国家重点实验室,辽宁,大连,116012;大连理工大学,精细化工国家重点实验室,辽宁,大连,116012 |
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| 摘 要： | 利用固定吸附床研究了不同金属离子改性的ZSM分子筛对NO的吸附性能.在所用样品中,钴离子改性的ZSM-5分子筛显示出了最佳的吸附性能.其对NO吸附的穿透时间随着钴含量、铝含量、浸渍液的pH和粘合剂Al2O3用量的变化而变化,随吸附温度的升高而缩短.另外,气体中存在H2S时,样品对NO的吸附穿透时间缩短.利用热重分析方法,分析了吸附剂的热再生,证明高温加热法是一种便利的NO吸附剂再生方法.
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| 关 键 词： | 一氧化氮 吸附 钴改性ZSM-5 |
| 文章编号： | 1000-8608（2005）04-0487-05 |
| 收稿时间： | 2004-02-15 |
| 修稿时间： | 2004-02-15 |
Research on low-concentration NO adsorption capability on Co-containing ZSM-5 zeolite |
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| ZHANG Yong-chun,XUE Quan-min,TAN Da-zhi.Research on low-concentration NO adsorption capability on Co-containing ZSM-5 zeolite[J].Journal of Dalian University of Technology,2005,45(4):487-491. |
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| Authors: | ZHANG Yong-chun XUE Quan-min TAN Da-zhi |
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| Abstract: | The adsorption capability of nitric oxide (NO) on various metal ion-containing ZSM-5 zeolites was examined by the adsorption measurements in a fixed bed flow adsorption apparatus. Among the samples used, the Co-containing ZSM-5 showed the optimum capability for breakthrough time and adsorption amount. The breakthrough time of NO on Co-containing ZSM-5 zeolite was changed with Co-containing amounts, Al content, pH of load solution and Al_2O_3 amounts. With the increase of adsorption temperature, the breakthrough time decreased. Besides, the breakthrough time of NO on Co-containing ZSM-5 zeolite with H_2S in gas decreased. In addition, thermogravimetric analysis was used to study the thermo-regeneration problem of adsorbent. The result shows that heating at high temperature is a convenient method to regenerate NO-sorbent. |
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| Keywords: | nitric oxide adsorption Co-containing ZSM-5 |
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