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Investigation of Two-Phase Intergrowth and Coexistence in Mn-Ce-Ti-O Catalysts for the Selective Catalytic Reduction of NO with NH3: Structure-Activity Relationship and Reaction Mechanism
Li, LL; Wu, YH; Hou, XY; Chu, BX; Nan, B; Qin, QJ; Fan, MG; Sun, CZ; Li, B; Dong, LH; Dong, L
2019
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume58Issue:2Pages:849—862
Subtype期刊论文
AbstractTiO2-supported manganese catalysts have been widely investigated because of their unique catalytic properties. A series of Mn-Ce-Ti-O catalysts were synthesized by a modified sol-gel method. Mn atom doping into CT-0/1 samples results in anatase partly transforming into rutile and two-phase coexistence. X-ray photoelectron spectroscopy and NH3 temperature programmed desorption analysis show that the reactions of Mn3+ + Ti4+ <-> Mn4+ + Ti3+ and Ce4+ + Mn3+ <-> Ce3+ + Mn4+ happened, which is propitious to generating plentiful oxygen defects and chemical adsorbed oxygen and beneficial for the oxidation of NO to NO2. In addition, doping of Mn atoms could produce more acid sites and increase the ability of adsorption NH3 that reacted with NO2 to achieve high performance of deNO(x) in a wide temperature window. In situ diffusion reflectance infrared Fourier transform spectroscopy shows that MCT-15/1 achieves unpredictable NH3 selective catalytic reduction activity following transition from the Langmuir-Hinshelwood (L-H) mechanism to the Eley-Rideal (E-R) mechanism with rising temperature.
KeywordIN-SITU DRIFTS LOW-TEMPERATURE SCR OXIDE CATALYSTS MNOX-CEO2 CATALYSTS NH3-SCR REACTION MANGANESE OXIDE N-2 SELECTIVITY SO2 RESISTANCE OXIDATION CO
DOI10.1021/acs.iecr.8b05066
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/31682
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc In, Nanning 530004, Peoples R China;
2.Nanjing Univ, Sch Environm, Ctr Modern Anal, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China;
3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China
Recommended Citation
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Li, LL,Wu, YH,Hou, XY,et al. Investigation of Two-Phase Intergrowth and Coexistence in Mn-Ce-Ti-O Catalysts for the Selective Catalytic Reduction of NO with NH3: Structure-Activity Relationship and Reaction Mechanism[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2019,58(2):849—862.
APA Li, LL.,Wu, YH.,Hou, XY.,Chu, BX.,Nan, B.,...&Dong, L.(2019).Investigation of Two-Phase Intergrowth and Coexistence in Mn-Ce-Ti-O Catalysts for the Selective Catalytic Reduction of NO with NH3: Structure-Activity Relationship and Reaction Mechanism.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,58(2),849—862.
MLA Li, LL,et al."Investigation of Two-Phase Intergrowth and Coexistence in Mn-Ce-Ti-O Catalysts for the Selective Catalytic Reduction of NO with NH3: Structure-Activity Relationship and Reaction Mechanism".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 58.2(2019):849—862.
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