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材料工程  2018, Vol. 46 Issue (9): 53-58    DOI: 10.11868/j.issn.1001-4381.2016.000299
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
液相共沉淀法制备MnO2/CNFs催化剂及其低温脱硝性能
邹海强1, 杨隽逸2, 郑玉婴1, 陈健1, 卢秀恋1
1. 福州大学 材料科学与工程学院, 福州 350108;
2. 福建海峡环保集团股份有限公司, 福州 350108
Preparation of MnO2/CNFs by Liquid Phase Coprecipitation Method and Its Performance in Low-temperature Denitrification
ZOU Hai-qiang1, YANG Jun-yi2, ZHENG Yu-ying1, CHEN Jian1, LU Xiu-lian1
1. College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China;
2. Fujian Haixia Environmental Protection Company, Fuzhou 350108, China
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摘要 以碳纳米纤维为载体,采用液相共沉淀法制备MnO2/CNFs催化剂并将其应用于低温选择性催化还原(SCR)NO,利用BET,XRD,FESEM,EDS,TEM及XPS对催化剂的微观形貌、结构特征、元素组成以及价态分布进行表征。结果表明:催化剂的活性组分是MnO2,且以无定型态负载于CNFs表面。在80~180℃下进行低温脱硝活性的测试。当负载量为6%时,MnO2/CNFs催化剂的脱硝性能最为优异,在80℃时脱硝率就达到了65.25%,当温度升高至180℃时脱硝率达95.25%。无定型结构、良好的分散性以及较高的表面吸附氧含量是MnO2/CNFs催化剂具有优异低温脱硝催化活性的主要原因。本研究在未经过任何酸处理的情况下使MnO2负载在CNFs上,很大程度上减小了对环境的污染。
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邹海强
杨隽逸
郑玉婴
陈健
卢秀恋
关键词 液相共沉淀法MnO2/CNFs催化剂脱硝低温选择性催化还原碳纳米纤维    
Abstract:Based on CNFs supports, a series of MnO2/CNFs catalysts were synthesized by a liquid phase coprecipitation method, and it was applied to selective catalytic reduction (SCR) of NO. The microstructure, elemental composition, and valence state of the as-obtained catalysts were characterized by BET, XRD, FESEM, EDS, XPS and TEM. The results show that MnO2 is distributed on the surface of CNFs with amorphous form equably as the active components. MnO2/CNFs catalyst shows up the best activity in the test of SCR at the testing temperature range of 80-180℃, when the loading amount is 6%. NO transformation rate is 65.25% at 80℃, and 95.25% at 180℃. Amorphous structure, favorable dispersion and higher content of surface oxide are the main cause of MnO2/CNFs's excellent catalytic activity at low temperature. MnO2 is loaded on the CNFs without any acid-treated, which makes it more environment-friendly.
Key wordsliquid-phase coprecipitation method    MnO2/CNFs catalyst    denitrification    low-temperature selective catalytic reduction    carbon nanofiber
收稿日期: 2016-03-15      出版日期: 2018-09-19
中图分类号:  X701  
通讯作者: 郑玉婴(1959-),女,教授,博士,研究方向为功能高分子材料,联系地址:福建省福州市大学新区学园路2号福州大学新校区材料科学与工程学院(350108),E-mail:yyzheng@fzu.edu.cn     E-mail: yyzheng@fzu.edu.cn
引用本文:   
邹海强, 杨隽逸, 郑玉婴, 陈健, 卢秀恋. 液相共沉淀法制备MnO2/CNFs催化剂及其低温脱硝性能[J]. 材料工程, 2018, 46(9): 53-58.
ZOU Hai-qiang, YANG Jun-yi, ZHENG Yu-ying, CHEN Jian, LU Xiu-lian. Preparation of MnO2/CNFs by Liquid Phase Coprecipitation Method and Its Performance in Low-temperature Denitrification. Journal of Materials Engineering, 2018, 46(9): 53-58.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.000299      或      http://jme.biam.ac.cn/CN/Y2018/V46/I9/53
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