Fe-doped Beta zeolite from organotemplate-free synthesis for NH3-SCR of NOx

被引：37

作者：

Zhu, Yongjun ^{[1
]}

Chen, Bingbing ^{[1
]}

Zhao, Rongrong ^{[1
]}

Zhao, Qi ^{[1
]}

Gies, Hermann ^{[2
]}

Xiao, Feng-Shou ^{[3
]}

De Vos, Dirk ^{[4
]}

Yokoi, Toshiyuki ^{[5
]}

Bao, Xinhe ^{[6
]}

Kolb, Ute ^{[7
]}

Feyen, Mathias ^{[8
]}

Maurer, Stefan ^{[8
]}

Moini, Ahmad ^{[9
]}

Mueller, Ulrich ^{[8
]}

Shi, Chuan ^{[1
]}

Zhang, Weiping ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Chem, 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, Zhejiang, 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 SE, Proc Res & Chem Engn, D-67056 Ludwigshafen, Germany

[9] Catalysts LLC, BASF Corp, Iselin, NJ 08830 USA

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2016年 / 6卷 / 17期

基金：

中国国家自然科学基金;

关键词：

SELECTIVE CATALYTIC-REDUCTION; VANADIA-TITANIA AEROGELS; ACTIVE-SITES; FE/ZSM-5; CATALYSTS; OLEFIN METATHESIS; N2O DECOMPOSITION; BRONSTED ACIDITY; LOW-TEMPERATURES; AL DISTRIBUTION; IRON SITES;

D O I：

10.1039/c6cy00231e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two types of Beta zeolites, one from organotemplate-free synthesis with a Si/Al ratio of 9 and the other from a commercial one with a Si/Al ratio of 19, were employed here to dope Fe for NH3-SCR of NOx. Fe-Beta (Si/Al = 9) exhibits much higher activity than Fe-Beta (Si/Al = 19), especially at low-temperature regions (<250 degrees C). In addition, it also exhibits better hydrothermal stability as compared with Fe-Beta (Si/Al = 19), which demonstrates that it is a promising SCR catalyst with good activity as well as hydrothermal stability. The correlation between the quantitative calculation of the content of isolated Fe3+ in Beta zeolites and the NO conversion rate at 150 degrees C shows a linear relationship, suggesting that the isolated Fe3+ species affect the SCR activity directly. The higher activity of the Fe-Beta-9 catalyst is supposed to be related not only to the isolated Fe3+ but also to the acidity. Furthermore, the template-free synthesized Beta zeolite shows less dealumination during hydrothermal aging and therefore better hydrothermal stability during the SCR reaction.

引用

页码：6581 / 6592

页数：12

共 55 条

[1] Selective catalytic reduction of NOx by NH3 on Fe/HBEA zeolite catalysts in oxygen-rich exhaust [J].

Balle, Peter ;

Geiger, Bastian ;

Kureti, Sven .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 85 (3-4) :109-119

[2] Temperature-dependent N2O decomposition over Fe-ZSM-5:: Identification of sites with different activity [J].

Berrier, E. ;

Ovsitser, O. ;

Kondratenko, E. V. ;

Schwidder, M. ;

Gruenert, W. ;

Brueckner, A. .

JOURNAL OF CATALYSIS, 2007, 249 (01) :67-78

[3]

Bosh F. J. H., 1988, CATAL TODAY, V2, P369

[4] Hydrothermal deactivation of Fe-ZSM-5 catalysts for the selective catalytic reduction of NO with NH3 [J].

Brandenberger, Sandro ;

Kroecher, Oliver ;

Casapu, Maria ;

Tissler, Arno ;

Althoff, Roderik .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 101 (3-4) :649-659

[5] The determination of the activities of different iron species in Fe-ZSM-5 for SCR of NO by NH3 [J].

Brandenberger, Sandro ;

Kroecher, Oliver ;

Tissler, Arno ;

Althoff, Roderik .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2010, 95 (3-4) :348-357

[6] The State of the Art in Selective Catalytic Reduction of NOx by Ammonia Using Metal-Exchanged Zeolite Catalysts [J].

Brandenberger, Sandro ;

Kroecher, Oliver ;

Tissler, Arno ;

Althoff, Roderik .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2008, 50 (04) :492-531

[7] Improvement of Activity and SO2 Tolerance of Sn-Modified MnOx-CeO2 Catalysts for NH3-SCR at Low Temperatures [J].

Chang, Huazhen ;

Chen, Xiaoyin ;

Li, Junhua ;

Ma, Lei ;

Wang, Chizhong ;

Liu, Caixia ;

Schwank, Johannes W. ;

Hao, Jiming .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2013, 47 (10) :5294-5301

[8] Activity and durability of Fe/ZSM-5 catalysts for lean burn NOx reduction in the presence of water vapor [J].

Chen, HY ;

Sachtler, WMH .

CATALYSIS TODAY, 1998, 42 (1-2) :73-83

[9] TPD study of mordenite-type zeolites for selective catalytic reduction of NO by NH3 [J].

Choi, EY ;

Nam, IS ;

Kim, YG .

JOURNAL OF CATALYSIS, 1996, 161 (02) :597-604

[10] Co2+ ions as probes of Al distribution in the framework of zeolites.: ZSM-5 study [J].

Dedecek, J ;

Kaucky, D ;

Wichterlová, B ;

Gonsiorová, O .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2002, 4 (21) :5406-5413

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