Preparation of nanosheet Fe-ZSM-5 catalysts, and effect of Fe content on acidity, water, and sulfur resistance in the selective catalytic reduction of NO x by ammonia

被引：22

作者：

Ma, Luoning ^{[1
]}

Qu, Hongxia ^{[1
]}

Zhang, Jie ^{[1
]}

Tang, Qisheng ^{[1
]}

Zhang, Shule ^{[1
]}

Zhong, Qin ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2013年 / 39卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Fe-ZSM-5; catalysts; Nanosheets; SCR; NOx; Water and sulfur resistance; NITRIC-OXIDE; ZEOLITE; NH3; TEMPERATURE; OXIDATION; FEZSM-5; MFI; NITROGEN; SITES; N2O;

D O I：

10.1007/s11164-012-0927-9

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Direct synthesis of nanosheet Fe-ZSM-5 catalysts and their use for selective catalytic reduction (SCR) of NO (x) by ammonia were studied. XRD, BET, SEM, EPR, and NH3-TPD were used to understand the properties of catalysts with different iron loading. XRD confirmed the presence of the ZSM-5 crystal phase, and there was no Fe2O3 phase on the surface of the crystals. SEM showed the Fe-ZSM-5 catalysts comprised microspheres made up of nanosheets. EPR indicated that the iron was present as isolated Fe(3+)and FeO (x) oligomers uniformly dispersed throughout the crystals. NH3-TPD indicated that Fe-ZSM-5 (20,1:1) had maximum acid sites and density at approximately 250 and 450 A degrees C, respectively. Fe-ZSM-5 (20,1:1) had the highest activity in the SCR reaction with NH3. It was also confirmed that Fe-ZSM-5 (20,1:1) had excellent resistance to SO2 and H2O under the SCR reaction conditions. The effects of water vapor and SO2, iron loading, and the Si/(Fe + Al) ratio were also investigated for these catalysts.

引用

页码：4109 / 4120

页数：12

共 50 条

[1] Preparation of nanosheet Fe-ZSM-5 catalysts, and effect of Fe content on acidity, water, and sulfur resistance in the selective catalytic reduction of NOx by ammonia
Luoning Ma
Hongxia Qu
Jie Zhang
Qisheng Tang
Shule Zhang
Qin Zhong
Research on Chemical Intermediates, 2013, 39 : 4109 - 4120
[2] Selective catalytic reduction of NO by ammonia over Fe-ZSM-5 catalysts
Ma, AZ
Grünert, W
CHEMICAL COMMUNICATIONS, 1999, (01) : 71 - 72
[3] The role of Bronsted acidity in the selective catalytic reduction of NO with ammonia over Fe-ZSM-5
Brandenberger, Sandro
Kroecher, Oliver
Wokaun, Alexander
Tissler, Arno
Althoff, Roderik
JOURNAL OF CATALYSIS, 2009, 268 (02) : 297 - 306
[4] Catalytic performance of Fe-ZSM-5 catalysts for selective catalytic reduction of nitric oxide by ammonia
Long, RQ
Yang, RT
JOURNAL OF CATALYSIS, 1999, 188 (02) : 332 - 339
[5] Central structure and toxic effects in the selective catalytic reduction of NO with ammonia on Fe-ZSM-5 catalysts
De Toni, Andrea
Schwidder, Michael
Bruekner, Angelika
Gruenert, Wolfgang
CHEMIE INGENIEUR TECHNIK, 2007, 79 (06) : 871 - 877
[6] Role of α-Sites in the selective catalytic reduction of NOx with ammonia over Fe-ZSM-5 catalysts
D. E. Doronkin
L. V. Piryutko
E. V. Starokon’
G. I. Panov
A. Yu. Stakheev
Kinetics and Catalysis, 2012, 53 : 747 - 752
[7] Role of α-Sites in the Selective Catalytic Reduction of NOx with Ammonia over Fe-ZSM-5 Catalysts
Doronkin, D. E.
Piryutko, L. V.
Starokon', E. V.
Panov, G. I.
Stakheev, A. Yu.
KINETICS AND CATALYSIS, 2012, 53 (06) : 747 - 752
[8] Selective catalytic reduction of NOx by ammonia over Fe-ZSM-5 catalyst
Ma, Luoning
Qu, Hongxia
Zhong, Qin
Zhang, Jie
Tang, Qisheng
ADVANCES IN CHEMICAL ENGINEERING II, PTS 1-4, 2012, 550-553 : 230 - 233
[9] Fe-ZSM-5 catalysts for the selective reduction of NO:: Influence of preparation route on structure and catalytic activity
Schwidder, M
Heinrich, F
Kumar, MS
Brückner, A
Grünert, W
RECENT ADVANCES IN THE SCIENCE AND TECHNOLOGY OF ZEOLITES AND RELATED MATERIALS, PTS A - C, 2004, 154 : 2484 - 2492
[10] Selective catalytic reduction of nitric oxide with ammonia on Fe-ZSM-5 catalysts prepared by different methods
Delahay, G
Valade, D
Guzmán-Vargas, A
Coq, B
APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 55 (02) : 149 - 155

← 1 2 3 4 5 →