Citation: Yexuan Wen, Shuang Cao, Xiaoqi Fei, Haiqiang Wang, Zhongbiao Wu. One-step synthesized SO₄^2--TiO₂ with exposed (001) facets and its application in selective catalytic reduction of NO by NH₃[J]. Chinese Journal of Catalysis, ;2018, 39(4): 771-778. doi: 10.1016/S1872-2067(18)63034-7 shu

One-step synthesized SO₄^2--TiO₂ with exposed (001) facets and its application in selective catalytic reduction of NO by NH₃

Yexuan Wen ^a,b, ,
Shuang Cao ^a,b ,
Xiaoqi Fei ^a,b ,
Haiqiang Wang ^a,b ,
Zhongbiao Wu ^a,b

a Key Laboratory of Environment Remediation and Ecological Health of Ministry of Education, College of Environmental & Resources Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China;
b Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control, Hangzhou 310027, Zhejiang, China

Received Date: 22 December 2017
Revised Date: 23 January 2018

Fund Project: This work was supported by the National Key R&D Program of China (2016YFC0204100), the Zhejiang Provincial "151" Talents Program, the Program for Zhejiang Leading Team of S&T Innovation (2013TD07), and the Changjiang Scholar Incentive Program (2009).

A sample of sulfated anatase TiO₂ with high-energy (001) facets (TiO₂-001) was prepared by a simple one-step hydrothermal route using SO₄^2- as a morphology-controlling agent. After doping ceria, Ce/TiO₂-001 was used as the catalyst for selective catalytic reduction (SCR) of NO with NH₃. Compared with Ce/P25 (Degussa P25 TiO₂) and Ce/P25-S (sulfated P25) catalysts, Ce/TiO₂-001 was more suitable for medium-and high-temperature SCR of NO due to the high surface area, sulfation, and the excellent properties of the active-energy (001) facets. All of these facilitated the generation of abundant acidity, chemisorbed oxygen, and activated NO_x-adsorption species, which were the important factors for the SCR reaction.
- Anatase TiO₂,
- Sulfation,
- (001) facets,
- Ceria,
- Selective catalytic reduction
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One-step synthesized SO42--TiO2 with exposed (001) facets and its application in selective catalytic reduction of NO by NH3

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One-step synthesized SO₄^2--TiO₂ with exposed (001) facets and its application in selective catalytic reduction of NO by NH₃