化工进展 ›› 2020, Vol. 39 ›› Issue (5): 1784-1791.DOI: 10.16085/j.issn.1000-6613.2019-1317

• 工业催化 • 上一篇    下一篇

Mn/Cu-BTC催化剂同时脱硫脱硝实验研究

赵珂1(), 宁平1,2, 李凯1, 孙鑫1, 宋辛1, 王驰3()   

  1. 1.昆明理工大学环境科学与工程学院,云南 昆明 650500
    2.冶金及化工行业废气资源化国家地方联合工程研究中心,云南 昆明 650500
    3.昆明理工大学化学工程学院,云南 昆明 650500
  • 出版日期:2020-05-05 发布日期:2020-05-25
  • 通讯作者: 王驰
  • 作者简介:赵珂(1996—),男,硕士研究生,研究方向为催化材料的制备及其在脱硫脱硝中的应用。E-mail:1989028417@qq.com
  • 基金资助:
    国家自然科学基金(21667015)

Experimental study on simultaneous removal of SO2 and NO byMn/Cu-BTC catalyst

Ke ZHAO1(), Ping NING1,2, Kai LI1, Xin SUN1, Xin SONG1, Chi WANG3()   

  1. 1.Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
    2.National Regional Engineering Research Center-NCW, Kunming 650500, Yunnan, China
    3.Faculty of Chemical Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
  • Online:2020-05-05 Published:2020-05-25
  • Contact: Chi WANG

摘要:

通过水热合成法制得金属有机骨架材料Cu-BTC,采用浸渍法将金属氧化物(Fe、Mn、Ce、Co、Mo)负载在Cu-BTC上得到复合催化剂(X/Cu-BTC)并用于同时脱除模拟烟气中的SO2和NO。采用N2物理吸附(BET)、X射线衍射分析(XRD)、热重分析(TG)以及扫描电镜(SEM)等方法对催化剂进行表征。表征结果显示MnOx的负载使得催化剂的比表面积、孔体积下降,负载前后催化剂的结构保持不变。同时考察了不同金属氧化物负载Cu-BTC同时脱硫脱硝的效果:Mn/Cu-BTC的脱硝最佳,其次为Ce/Cu-BTC。最后对MnOx与CeOx的负载量进行了考察,10% Mn/Cu-BTC与10% Ce/Cu-BTC为最佳负载量。在250℃,空速为10000h-1时,10% Mn/Cu-BTC的脱硫和脱硝效率分别为100%和88%,10% Ce/Cu-BTC的脱硫和脱硝效率分别为100%和75%,表明Mn/Cu-BTC催化剂对于SO2和NO具有良好的同时脱除效果。

关键词: Mn/Cu-BTC, 催化剂, 二氧化硫, 一氧化氮, 同时脱除, 选择催化还原, 烟道气

Abstract:

The metal organic framework Cu-BTC was prepared by hydrothermal synthesis, and then metal oxides (Fe, Mn, Ce, Co, Mo) were supported on Cu-BTC by impregnation method to obtain composite catalysts (X/Cu-BTC) which were then used for simultaneously remove SO2 and NO from the simulated flue gas. The physical and chemical properties of the catalysts were characterized by N2 physical adsorption (BET), X-ray diffraction(XRD), thermal gravimetric analyzer(TG), and scanning electron microscope(SEM). The results showed that the loading of MnOx decreased the specific surface area and pore volume, but did not change the structure of the catalyst. At the same time, the performance of simultaneous desulfurization and denitrification of Cu-BTC supported by different metal oxides was investigated and Mn/Cu-BTC had the best denitrification efficiency, followed by Ce/Cu-BTC. Finally, the loading of MnOx and CeOx was investigated. 10%Mn/Cu-BTC and 10%Ce/Cu-BTC were found to be the optimal loadings. The desulfurization and denitration efficiencies of 10%Mn/Cu-BTC were 100% and 88%, respectively, while those of 10%Ce/Cu-BTC were 100% and 75%, respectively. It is indicated that the Mn/Cu-BTC catalyst had a better simultaneous removal performance on SO2 and NO.

Key words: Mn/Cu-BTC, catalyst, sulphur dioxide, nitric oxide, simultaneous removal, selective catalytic reduction(SCR), flue gas

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