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现代化工  2019, Vol. 39 Issue (5): 137-140,142    DOI: 10.16606/j.cnki.issn0253-4320.2019.05.030
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
Al2O3负载型Cu-Al类水滑石氧化物的NOx吸附及分解性能
拜文磊1, 刘伟军1, 郝再兵1, 张博儒1, 张书华2
1. 上海工程技术大学机械与汽车工程学院, 上海 201620;
2. 上海工程技术大学化学与化工学院, 上海 201620
Performance of Al2O3 loaded Cu-Al hydrotalcite-like oxides in adsorption and decomposition of NOx
BAI Wen-lei1, LIU Wei-jun1, HAO Zai-bing1, ZHANG Bo-ru1, ZHANG Shu-hua2
1. School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China;
2. College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
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摘要 采用水热法制备铜铝水滑石作为前体,经500℃焙烧得到Cu-Al复合氧化物,并利用X射线衍射、红外光谱对其进行表征;将Cu-Al复合氧化物负载于直径为3~5 mm球状Al2O3载体上,进行NO吸附和热稳定性试验。结果表明,NO、O2、H2O(g)在Cu-Al复合氧化物作用下在氧化物表面生成HNO3,并与Cu-Al复合氧化物中的CuO组分反应生成Cu(NO32,吸附率可达28%,再高温焙烧可以释放以NO为主体的氮氧化物,并且可以恢复到之前的金属氧化物结构。而吸附完成的化合物静置数天后会回到原来的水滑石层状结构。
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拜文磊
刘伟军
郝再兵
张博儒
张书华
关键词:  铜铝水滑石  Al2O3载体  铜铝氧化物  NOx吸附  催化剂再生    
Abstract: Copper-aluminum hydrotalcite is made via hydrothermal method,then is roasted at 500℃ to prepare Cu-Al complex oxides that is characterized by X-ray diffraction and infrared-red spectrum.The prepared Cu-Al composite oxide is loaded onto the surface of spherical Al2O3 carrier with a diameter between 3 mm and 5 mm,and the sample is evaluated in the experiments about NO adsorption and heat endurance.The experimental results show that NO,O2 and water steam forms HNO3 on the surface of Cu-Al complex oxides,then HNO3 reacts with CuO in Cu-Al composite oxides to form Cu(NO3)2,and the adsorption efficiency can reach 28%.NOx,with NO as the main body,can be released when the product is roasted at a high temperature,and the structure of the former metal oxides can be restored.The adsorbed compounds will return to the original hydrotalcite-like layered structure after a few days of static storage.
Key words:  Cu-Al hydrotalcite    Al2O3 carrier    Cu-Al oxide    NOx adsorption    regeneration of catalyst
收稿日期:  2018-08-27      修回日期:  2019-03-14          
ZTFLH:  X511  
基金资助: 上海工程技术大学科研创新项目(E3-0903-18-01224)
通讯作者:  刘伟军(1963-),男,博士,教授,研究方向为能源与环境保护,通讯联系人,lwj1119@139.com。   
作者简介:  拜文磊(1994-),男,硕士研究生,研究方向为尾气处理,424084694@qq.com
引用本文:    
拜文磊, 刘伟军, 郝再兵, 张博儒, 张书华. Al2O3负载型Cu-Al类水滑石氧化物的NOx吸附及分解性能[J]. 现代化工, 2019, 39(5): 137-140,142.
BAI Wen-lei, LIU Wei-jun, HAO Zai-bing, ZHANG Bo-ru, ZHANG Shu-hua. Performance of Al2O3 loaded Cu-Al hydrotalcite-like oxides in adsorption and decomposition of NOx. Modern Chemical Industry, 2019, 39(5): 137-140,142.
链接本文:  
http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2019.05.030  或          http://www.xdhg.com.cn/CN/Y2019/V39/I5/137
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