DICP OpenIR
Cu-exchanged Al-rich SSZ-13 zeolite from organotemplate-free synthesis as NH3-SCR catalyst: Effects of Na+ ions on the activity and hydrothermal stability
Zhao, Zhenchao1; Yu, Rui1; Zhao, Rongrong1; Shi, Chuan1; Gies, Hermann2; Xiao, Feng-Shou3; De Vos, Dirk4; Yokoi, Toshiyuki5; Bao, Xinhe6; Kolb, Ute7; Feyen, Mathias9; McGuire, Robert9; Maurer, Stefan9; Moini, Ahmad8; Mueller, Ulrich9; Zhang, Weiping1
KeywordNh3-scr Cu-ssz-13 Catalyst Organotemplate-free Synthesis Of Ssz-13 Na++ Effect Hydrothermal Stability
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
2017-11-15
DOI10.1016/j.apcatb.2017.06.013
Volume217Pages:421-428
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordSOLID-STATE NMR ; CU-SAPO-34 CATALYSTS ; CU-SSZ-13 CATALYST ; BETA-ZEOLITE ; REDUCTION ; NOX ; NH3 ; AMMONIA ; SITES ; FE
AbstractThe relatively low activity at lower temperatures and high cost of SSZ-13 zeolite from organotemplate synthesis are two of major problems of presently commercialized Cu-SSZ-13 catalysts for NH3-SCR reaction. Cu-exchanged Al-rich SSZ-13 catalysts with Si/Al=4 from organotemplate-free synthesis have been prepared, and show superior NH3-SCR performance with NO conversions above 85% at wide-temperature window ranging from 150 to 650 degrees C. Cu-Na-SSZ-13 catalysts with varied amount of residual Na+ were prepared by partial ion-exchange of as-prepared Al-rich Na-SSZ-13, and it's found that Cu-Na-SSZ-13 catalyst with moderate Na+ content can improve both the low-temperature activity and its hydrothermal stability. Al-27 and H-1 MAS NMR spectra indicate that residual Na+ can stabilize the framework Al in Al-rich SSZ-13 zeolite. UV-Vis-NIR and H-2-TPR spectra demonstrate that Na+ co-cations enhance the reducibility of Cu2+, whereas too much amount of Na+ may result in the formation of CuOx, during the hydrothermal treatment, and further decrease the hydrothermal stability of Cu-Na-SSZ-13 catalyst. The optimized organotemplate-free Cu-Na-SSZ-13 with 2.7 wt% Cu and 1.7 wt% Na exhibits almost the same NO conversions as the commercial high-silica Cu-SSZ-13 catalyst at 150-550 degrees C after 750 and 800 degrees C hydrothermal aging, and shows promising practical applications. (C) 2017 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000405158000042
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/152061
Collection中国科学院大连化学物理研究所
Affiliation1.Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China
2.Ruhr Univ Bochum, Inst Geol Mineral & Geophys, Bochum, Germany
3.Zhejiang Univ, Dept Chem, Hangzhou 310028, Peoples R China
4.Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, Leuven, Belgium
5.Tokyo Inst Technol, Chem Resources Lab, Yokohama, Kanagawa, Japan
6.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
7.Johannes Gutenberg Univ Mainz, Inst Phys Chem, D-55128 Mainz, Germany
8.BASF Corp, Catalysts LLC, Iselin, NJ 08830 USA
9.BASF SE, Proc Res & Chem Engn, D-67056 Ludwigshafen, Germany
Recommended Citation
GB/T 7714
Zhao, Zhenchao,Yu, Rui,Zhao, Rongrong,et al. Cu-exchanged Al-rich SSZ-13 zeolite from organotemplate-free synthesis as NH3-SCR catalyst: Effects of Na+ ions on the activity and hydrothermal stability[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2017,217:421-428.
APA Zhao, Zhenchao.,Yu, Rui.,Zhao, Rongrong.,Shi, Chuan.,Gies, Hermann.,...&Zhang, Weiping.(2017).Cu-exchanged Al-rich SSZ-13 zeolite from organotemplate-free synthesis as NH3-SCR catalyst: Effects of Na+ ions on the activity and hydrothermal stability.APPLIED CATALYSIS B-ENVIRONMENTAL,217,421-428.
MLA Zhao, Zhenchao,et al."Cu-exchanged Al-rich SSZ-13 zeolite from organotemplate-free synthesis as NH3-SCR catalyst: Effects of Na+ ions on the activity and hydrothermal stability".APPLIED CATALYSIS B-ENVIRONMENTAL 217(2017):421-428.
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