Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst

Huixian Pan; Li Wang; Shuanling He; Jie Wang

doi:doi:10.11648/j.sd.20170506.22

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Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnO_x-CeO_x/WO₃/TiO₂-ZrO₂ Catalyst

Huixian Pan, Li Wang, Shuanling He, Jie Wang

Published in Science Discovery (Volume 5, Issue 6)

Received: 16 November 2017 Published: 21 November 2017

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Abstract

Modified sol-gel method was adopted to prepare TiO₂-ZrO₂ carrier of molar ratio 4:1, and the catalysts were prepared by impregnating with WO₃ and MnO_x-CeO_x sequentially. The carriers and catalysts were characterized by X ray diffraction (XRD) and electron scanning electron microscopy (SEM), and their NH₃-SCR denitrification activity and sulfur resistance were investigated at low temperature. The results shown that mixing zirconium oxychloride with butyl titanate ethanol solution first and then titrating acetic acid inhibitor would have more Zr⁴⁺ substituted Ti⁴⁺ doping into the TiO₂ lattice, resulting in more lattice defects and active sites. The surface morphology of carriers were all nano particles, but the carrier prepared by modified method shown smaller particle size and better dispersion. The catalyst which was calcined at 200°C for 2.5h exhibited best NH₃-SCR performance, its denitrification activity reached 98% at 100°C, and the NO_x conversion could be maintained at about 75% after continuously injecting SO₂ (100ppm) for 8h.

Published in	Science Discovery (Volume 5, Issue 6)
DOI	10.11648/j.sd.20170506.22
Page(s)	463-468
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Sol-Gel, Selective Catalytic Reduction, TiO₂, ZrO₂

References

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[2]	Dong W K, Nam K B, Hong S C. Influence of tungsten on the activity of a Mn/Ce/W/Ti catalyst for the selective catalytic reduction of NO with NH₃, at low temperatures [J]. Applied Catalysis A General, 2015, 497:160-166.
[3]	Park E, Chin S, Kim J, et al. Preparation of MnO_x /TiO₂ ultrafine nanocomposite with large surface area and its enhanced toluene oxidation at low temperature. Powder Technol, 2011, 208(3): 740.
[4]	卢熙宁，宋存义，童震松，等.锆掺杂TiO₂负载锰铈氧化物低温催化还原NO_x[J].北京科技大学学报，2014(9):1222-1232。
[5]	Li J, Chang H, Ma L, et al. Low-temperature selective catalytic reduction of NO_x, with NH₃, over metal oxide and zeolite catalysts—A review [J]. Catalysis Today, 2011, 175(1):147-156.
[6]	Chen J P, Yang R T. Selective catalytic reduction of NO with NH₃ on SO₄^2-/TiO₂ superacid catalyst [J]. Journal of Catalysis, 1993, 139(1):277-288.
[7]	韩承辉，刘炳华，张惠良，等.TiO₂-ZrO₂的表征及其异丙醇催化转化性能[J].物理化学学报，2006,22(8):993-998。
[8]	Kazuhiro Ito, Shuichi Kakino, Keita Ikeue, et al. NO adsorption/desorption property of TiO₂–ZrO₂, having tolerance to SO₂, poisoning [J]. Applied Catalysis B Environmental, 2007, 74(1–2):137-143.
[9]	王龙飞，张亚平，郭婉秋，等.WO₃/TiO₂-ZrO₂脱硝催化剂制备及其NH₃活化机理[J].化工学报，2015, 66(10):3903-3910.
[10]	张亚平，汪小蕾，孙克勤，等.WO₃对MnO_x/TiO₂低温脱硝SCR催化剂的改性研究[J].燃料化学学报，2011,39(10):782-786。
[11]	贠丽，汪莉，李强，等.Ce-MnO_x/TiO₂-ZrO₂低温选择催化还原NO活性和抗毒性研究[J].功能材料，2016, 47(10):10059-10064。

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APA Style

Huixian Pan, Li Wang, Shuanling He, Jie Wang. (2017). Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst. Science Discovery, 5(6), 463-468. https://doi.org/10.11648/j.sd.20170506.22

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ACS Style

Huixian Pan; Li Wang; Shuanling He; Jie Wang. Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst. Sci. Discov. 2017, 5(6), 463-468. doi: 10.11648/j.sd.20170506.22

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AMA Style

Huixian Pan, Li Wang, Shuanling He, Jie Wang. Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst. Sci Discov. 2017;5(6):463-468. doi: 10.11648/j.sd.20170506.22

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@article{10.11648/j.sd.20170506.22,
  author = {Huixian Pan and Li Wang and Shuanling He and Jie Wang},
  title = {Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst},
  journal = {Science Discovery},
  volume = {5},
  number = {6},
  pages = {463-468},
  doi = {10.11648/j.sd.20170506.22},
  url = {https://doi.org/10.11648/j.sd.20170506.22},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20170506.22},
  abstract = {Modified sol-gel method was adopted to prepare TiO2-ZrO2 carrier of molar ratio 4:1, and the catalysts were prepared by impregnating with WO3 and MnOx-CeOx sequentially. The carriers and catalysts were characterized by X ray diffraction (XRD) and electron scanning electron microscopy (SEM), and their NH3-SCR denitrification activity and sulfur resistance were investigated at low temperature. The results shown that mixing zirconium oxychloride with butyl titanate ethanol solution first and then titrating acetic acid inhibitor would have more Zr4+ substituted Ti4+ doping into the TiO2 lattice, resulting in more lattice defects and active sites. The surface morphology of carriers were all nano particles, but the carrier prepared by modified method shown smaller particle size and better dispersion. The catalyst which was calcined at 200°C for 2.5h exhibited best NH3-SCR performance, its denitrification activity reached 98% at 100°C, and the NOx conversion could be maintained at about 75% after continuously injecting SO2 (100ppm) for 8h.},
 year = {2017}
}

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TY  - JOUR
T1  - Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst
AU  - Huixian Pan
AU  - Li Wang
AU  - Shuanling He
AU  - Jie Wang
Y1  - 2017/11/21
PY  - 2017
N1  - https://doi.org/10.11648/j.sd.20170506.22
DO  - 10.11648/j.sd.20170506.22
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 463
EP  - 468
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20170506.22
AB  - Modified sol-gel method was adopted to prepare TiO2-ZrO2 carrier of molar ratio 4:1, and the catalysts were prepared by impregnating with WO3 and MnOx-CeOx sequentially. The carriers and catalysts were characterized by X ray diffraction (XRD) and electron scanning electron microscopy (SEM), and their NH3-SCR denitrification activity and sulfur resistance were investigated at low temperature. The results shown that mixing zirconium oxychloride with butyl titanate ethanol solution first and then titrating acetic acid inhibitor would have more Zr4+ substituted Ti4+ doping into the TiO2 lattice, resulting in more lattice defects and active sites. The surface morphology of carriers were all nano particles, but the carrier prepared by modified method shown smaller particle size and better dispersion. The catalyst which was calcined at 200°C for 2.5h exhibited best NH3-SCR performance, its denitrification activity reached 98% at 100°C, and the NOx conversion could be maintained at about 75% after continuously injecting SO2 (100ppm) for 8h.
VL  - 5
IS  - 6
ER  -

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Author Information

Huixian Pan

Energy and Environmental Engineering School, University of Science and Technology Beijing, Beijing, China
Li Wang

Energy and Environmental Engineering School, University of Science and Technology Beijing, Beijing, China
Shuanling He

Energy and Environmental Engineering School, University of Science and Technology Beijing, Beijing, China
Jie Wang

Energy and Environmental Engineering School, University of Science and Technology Beijing, Beijing, China

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Plain Text BibTeX RIS

APA Style

Huixian Pan, Li Wang, Shuanling He, Jie Wang. (2017). Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst. Science Discovery, 5(6), 463-468. https://doi.org/10.11648/j.sd.20170506.22

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ACS Style

Huixian Pan; Li Wang; Shuanling He; Jie Wang. Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst. Sci. Discov. 2017, 5(6), 463-468. doi: 10.11648/j.sd.20170506.22

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AMA Style

Huixian Pan, Li Wang, Shuanling He, Jie Wang. Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst. Sci Discov. 2017;5(6):463-468. doi: 10.11648/j.sd.20170506.22

Copy | Download

@article{10.11648/j.sd.20170506.22,
  author = {Huixian Pan and Li Wang and Shuanling He and Jie Wang},
  title = {Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst},
  journal = {Science Discovery},
  volume = {5},
  number = {6},
  pages = {463-468},
  doi = {10.11648/j.sd.20170506.22},
  url = {https://doi.org/10.11648/j.sd.20170506.22},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20170506.22},
  abstract = {Modified sol-gel method was adopted to prepare TiO2-ZrO2 carrier of molar ratio 4:1, and the catalysts were prepared by impregnating with WO3 and MnOx-CeOx sequentially. The carriers and catalysts were characterized by X ray diffraction (XRD) and electron scanning electron microscopy (SEM), and their NH3-SCR denitrification activity and sulfur resistance were investigated at low temperature. The results shown that mixing zirconium oxychloride with butyl titanate ethanol solution first and then titrating acetic acid inhibitor would have more Zr4+ substituted Ti4+ doping into the TiO2 lattice, resulting in more lattice defects and active sites. The surface morphology of carriers were all nano particles, but the carrier prepared by modified method shown smaller particle size and better dispersion. The catalyst which was calcined at 200°C for 2.5h exhibited best NH3-SCR performance, its denitrification activity reached 98% at 100°C, and the NOx conversion could be maintained at about 75% after continuously injecting SO2 (100ppm) for 8h.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst
AU  - Huixian Pan
AU  - Li Wang
AU  - Shuanling He
AU  - Jie Wang
Y1  - 2017/11/21
PY  - 2017
N1  - https://doi.org/10.11648/j.sd.20170506.22
DO  - 10.11648/j.sd.20170506.22
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 463
EP  - 468
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20170506.22
AB  - Modified sol-gel method was adopted to prepare TiO2-ZrO2 carrier of molar ratio 4:1, and the catalysts were prepared by impregnating with WO3 and MnOx-CeOx sequentially. The carriers and catalysts were characterized by X ray diffraction (XRD) and electron scanning electron microscopy (SEM), and their NH3-SCR denitrification activity and sulfur resistance were investigated at low temperature. The results shown that mixing zirconium oxychloride with butyl titanate ethanol solution first and then titrating acetic acid inhibitor would have more Zr4+ substituted Ti4+ doping into the TiO2 lattice, resulting in more lattice defects and active sites. The surface morphology of carriers were all nano particles, but the carrier prepared by modified method shown smaller particle size and better dispersion. The catalyst which was calcined at 200°C for 2.5h exhibited best NH3-SCR performance, its denitrification activity reached 98% at 100°C, and the NOx conversion could be maintained at about 75% after continuously injecting SO2 (100ppm) for 8h.
VL  - 5
IS  - 6
ER  -

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