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Ni0.09Ti0.91O2納米顆粒和納米管負載銅的催化脫硝性能和機理
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作者單位:

1.濟南大學(xué)化學(xué)化工學(xué)院;2.山東第一醫(yī)科大學(xué)附屬省立醫(yī)院

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中圖分類號:

中圖法分類號：TG? ? ?

基金項目:

國家自然科學(xué)基金資助(項目號22075290),山東省自然科學(xué)基金自助(項目號ZR2021MH112, ZR2021MB020 and ZR2020MB089)


Catalytic denitration performance and mechanism of Ni0.09Ti0.91O2 nanoparticles and nanotube supported copper
Author:
Affiliation:

1.College of Chemistry and Chemical Engineering,University of Jinan,Jinan Shandong;2.Shandong Provincial Hospital affiliated to Shandong First Medical University,Jinan

Fund Project:

國家自然科學(xué)基金資助（項目號22075290），山東省自然科學(xué)基金自助（項目號ZR2021MH112， ZR2021MB020 and ZR2020MB089）

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    摘要:

    隨著氮氧化物危害的日益加劇，脫硝催化劑的發(fā)展已成為對其進行治理的關(guān)鍵因素。本文通過水熱、煅燒兩步法制備了Ni0.09Ti0.91O2納米管負載銅的脫硝催化劑，研究了該類催化劑的結(jié)構(gòu)和脫硝性能。采用N2物理吸附、X射線衍射、掃描電子電鏡、透射電鏡等方法確定了催化劑的結(jié)構(gòu)，Ni0.09Ti0.91O2納米管為銳鈦礦結(jié)構(gòu)，銅原子團簇分布在納米管表面，氮氣吸脫附實驗測定Ni0.09Ti0.91O2負載銅前后的比表面積分別為263.51和216.5422 m2 g-1，納米管表面銅分散均勻，提高了其催化脫硝性能，Ni0.09Ti0.91O2納米管負載7 wt%銅催化劑的脫硝效率接近100%，而且具有良好的抗中毒性能。原位漫反射紅外光譜測試表明其 NH3-SCR 過程遵循L-H機制，作為對比文章同時研究了Ni0.09Ti0.91O2納米顆粒負載銅的脫硝性能。Ni0.09Ti0.91O2納米管負載7 wt%銅催化劑顯示出良好的應(yīng)用前景。

    Abstract:

    With the increasing pollution of nitrogen oxides, the development of denitration catalysts have become one key factor for the treatment. In this paper, Ni0.09Ti0.91O2 nanotube supported copper denitration catalysts were prepared by hydrothermal and calcination two-step methods. The structure and catalytic denitration performance were studied. Results showed that the nanotube structure of the catalysts were determined by N2 adsorption-desorption, X-ray diffraction, scanning electron microscopy, transmission electron microscopy and other methodologies. Ni0.09Ti0.91O2 nanotubes are anatase structures, copper atomic clusters are distributed on the surface of the nanotubes, and nitrogen adsorption and desorption tests determined that the specific surface area of Ni0.09Ti0.91O2 before and after loading copper was 263.51 and 216.5422 m2 g-1，respectively. The copper on the surface of the nanotubes was uniformly dispersed. The denitration efficiency of Ni0.09Ti0.91O2 nanotube with 7wt% copper was quite approach to 100%, which was higher than that of the nanotube catalyst without copper, and it had good anti-poisoning performance. The results of in-situ infrared spectroscopy diffuse reflection tests showed that the NH3-SCR process of Ni0.09Ti0.91O2-loaded copper followed the L-H mechanism. In this paper, the denitration performance of Ni0.09Ti0.91O2 nanoparticle-supported copper was also studied as a comparison. The catalyst of Ni0.09Ti0.91O2 nanotube loaded with 7wt% copper showed the best denitrification and anti-poisoning properties, which had good application prospects.

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黃一萌,馬曉春,張海洲,張海濤,任信源,王慧寧,黃太仲. Ni0.09Ti0.91O2納米顆粒和納米管負載銅的催化脫硝性能和機理[J].稀有金屬材料與工程,2024,53(5):1417~1428.[Huang Yimeng, Ma Xiaochun, Zhang Haizhou, Zhang Haitao, Ren Xinyuan, Wang Huining, Huang Taizhong. Catalytic denitration performance and mechanism of Ni0.09Ti0.91O2 nanoparticles and nanotube supported copper[J]. Rare Metal Materials and Engineering,2024,53(5):1417~1428.]
DOI：10.12442/j. issn.1002-185X.20230167

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  • 收稿日期:2023-03-30
  • 最后修改日期:2023-05-22
  • 錄用日期:2023-06-01
  • 在線發(fā)布日期: 2024-05-28
  • 出版日期: 2024-05-22