Effect of Ce doping on the resistance of Na over V2O5-WO3/TiO2 SCR catalysts

Guang Hu; Jian Yang; Yuanmeng Tian; Bowen Kong; Qingcai Liu; Shan Ren; Jiangling Li; Ming Kong

doi:10.1016/j.materresbull.2018.04.009

Effect of Ce doping on the resistance of Na over V₂O₅-WO₃/TiO₂ SCR catalysts

Guang Hu
, Jian Yang
, Yuanmeng Tian
, Bowen Kong
, Qingcai Liu
, Shan Ren
, Jiangling Li
, Ming Kong

Chongqing University

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

Enhanced performance of Ce doping on the catalytic activity of V₂O₅-WO₃/TiO₂ catalysts and its resistance properties to Na poisoning have been investigated in the research. Different Na species (NaCl and Na₂O) were deposited on CeO₂-V₂O₅-WO₃/TiO₂ catalysts by impregnation method. The results presented that CeO₂-V₂O₅-WO₃/TiO₂ catalysts exhibited a higher NH₃-SCR activity and better Na resistance than the V₂O₅-WO₃/TiO₂ catalyst, and its poisoning resistance to Na₂O is more superior than to NaCl, caused by more acid sites over the 10%CeO₂-V₂O₅-WO₃/TiO₂ (Ce₁₀VWTi) catalyst, which indicated that the poisoning resistance of Na₂O on Ce₁₀VWTi catalysts is higher than that of NaCl. Combined with the characterization results, the dopant of Ce could enhance the surface chemisorbed oxygen on the Na poisoning V₂O₅-WO₃/TiO₂ catalysts, facilitate the redox cycle, and increase the intensity of acid sites due to the newly formed Brønsted acid sites stemmed from Ce³⁺−NH₄ ⁺, thereby promoting catalytic activity and Na poisoning resistance.

Original language	English
Pages (from-to)	112-118
Number of pages	7
Journal	Materials Research Bulletin
Volume	104
DOIs	https://doi.org/10.1016/j.materresbull.2018.04.009
State	Published - Aug 2018
Externally published	Yes

Keywords

Ce-doping
Na poisoning resistance
VO-WO/TiO catalysts

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10.1016/j.materresbull.2018.04.009

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@article{2cf77d7d9b9943d589b23c4395e1fbab,

title = "Effect of Ce doping on the resistance of Na over V2O5-WO3/TiO2 SCR catalysts",

abstract = "Enhanced performance of Ce doping on the catalytic activity of V2O5-WO3/TiO2 catalysts and its resistance properties to Na poisoning have been investigated in the research. Different Na species (NaCl and Na2O) were deposited on CeO2-V2O5-WO3/TiO2 catalysts by impregnation method. The results presented that CeO2-V2O5-WO3/TiO2 catalysts exhibited a higher NH3-SCR activity and better Na resistance than the V2O5-WO3/TiO2 catalyst, and its poisoning resistance to Na2O is more superior than to NaCl, caused by more acid sites over the 10\%CeO2-V2O5-WO3/TiO2 (Ce10VWTi) catalyst, which indicated that the poisoning resistance of Na2O on Ce10VWTi catalysts is higher than that of NaCl. Combined with the characterization results, the dopant of Ce could enhance the surface chemisorbed oxygen on the Na poisoning V2O5-WO3/TiO2 catalysts, facilitate the redox cycle, and increase the intensity of acid sites due to the newly formed Br{\o}nsted acid sites stemmed from Ce3+−NH4 +, thereby promoting catalytic activity and Na poisoning resistance.",

keywords = "Ce-doping, Na poisoning resistance, VO-WO/TiO catalysts",

author = "Guang Hu and Jian Yang and Yuanmeng Tian and Bowen Kong and Qingcai Liu and Shan Ren and Jiangling Li and Ming Kong",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = aug,

doi = "10.1016/j.materresbull.2018.04.009",

language = "英语",

volume = "104",

pages = "112--118",

journal = "Materials Research Bulletin",

issn = "0025-5408",

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}

TY - JOUR

T1 - Effect of Ce doping on the resistance of Na over V2O5-WO3/TiO2 SCR catalysts

AU - Hu, Guang

AU - Yang, Jian

AU - Tian, Yuanmeng

AU - Kong, Bowen

AU - Liu, Qingcai

AU - Ren, Shan

AU - Li, Jiangling

AU - Kong, Ming

PY - 2018/8

Y1 - 2018/8

N2 - Enhanced performance of Ce doping on the catalytic activity of V2O5-WO3/TiO2 catalysts and its resistance properties to Na poisoning have been investigated in the research. Different Na species (NaCl and Na2O) were deposited on CeO2-V2O5-WO3/TiO2 catalysts by impregnation method. The results presented that CeO2-V2O5-WO3/TiO2 catalysts exhibited a higher NH3-SCR activity and better Na resistance than the V2O5-WO3/TiO2 catalyst, and its poisoning resistance to Na2O is more superior than to NaCl, caused by more acid sites over the 10%CeO2-V2O5-WO3/TiO2 (Ce10VWTi) catalyst, which indicated that the poisoning resistance of Na2O on Ce10VWTi catalysts is higher than that of NaCl. Combined with the characterization results, the dopant of Ce could enhance the surface chemisorbed oxygen on the Na poisoning V2O5-WO3/TiO2 catalysts, facilitate the redox cycle, and increase the intensity of acid sites due to the newly formed Brønsted acid sites stemmed from Ce3+−NH4 +, thereby promoting catalytic activity and Na poisoning resistance.

AB - Enhanced performance of Ce doping on the catalytic activity of V2O5-WO3/TiO2 catalysts and its resistance properties to Na poisoning have been investigated in the research. Different Na species (NaCl and Na2O) were deposited on CeO2-V2O5-WO3/TiO2 catalysts by impregnation method. The results presented that CeO2-V2O5-WO3/TiO2 catalysts exhibited a higher NH3-SCR activity and better Na resistance than the V2O5-WO3/TiO2 catalyst, and its poisoning resistance to Na2O is more superior than to NaCl, caused by more acid sites over the 10%CeO2-V2O5-WO3/TiO2 (Ce10VWTi) catalyst, which indicated that the poisoning resistance of Na2O on Ce10VWTi catalysts is higher than that of NaCl. Combined with the characterization results, the dopant of Ce could enhance the surface chemisorbed oxygen on the Na poisoning V2O5-WO3/TiO2 catalysts, facilitate the redox cycle, and increase the intensity of acid sites due to the newly formed Brønsted acid sites stemmed from Ce3+−NH4 +, thereby promoting catalytic activity and Na poisoning resistance.

KW - Ce-doping

KW - Na poisoning resistance

KW - VO-WO/TiO catalysts

UR - https://www.scopus.com/pages/publications/85045191033

U2 - 10.1016/j.materresbull.2018.04.009

DO - 10.1016/j.materresbull.2018.04.009

M3 - 文章

AN - SCOPUS:85045191033

SN - 0025-5408

VL - 104

SP - 112

EP - 118

JO - Materials Research Bulletin

JF - Materials Research Bulletin

ER -

Effect of Ce doping on the resistance of Na over V₂O₅-WO₃/TiO₂ SCR catalysts

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Keywords

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