Characteristics of Fe-exchanged natural zeolites for the decomposition of N2O and its selective. catalytic reduction with NH3

被引:32
|
作者
Ates, Ayten [1 ]
机构
[1] Cumhuriyet Univ, Fac Engn, Dept Chem Engn, TR-58140 Sivas, Turkey
关键词
natural zeolite; step experiment; N2O decomposition; NH3; SCR;
D O I
10.1016/j.apcatb.2007.06.005
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
Natural zeolites obtained from various regions of Turkey and their iron-exchanged forms were characterised by XRD, BET, H-2-TPR and NH3-TPD methods. Transient experiments with N2O showed that the iron introduced into natural zeolites have appreciable oxygen deposition capacity due to isolated iron species involved. Atomic surface oxygen species in these zeolites are formed at 250 degrees C, which is released through increasing the temperature until 900 degrees C, similar to Fe-containing ZSM-5 zeolite. The steady-state experiments indicate that the iron-containing zeolite of the Yavu-Sivas region, in particular, has high activity in selective catalytic reduction of N2O With NH3 as a consequence of isolated cationic and/or dimeric iron content. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:282 / 290
页数:9
相关论文
共 50 条
  • [41] Selective catalytic reduction of N2O with light alkanes and N2O decomposition over Fe-BEA zeolite catalysts
    Nobukawe, T
    Kita, K
    Tanaka, S
    Ito, S
    Miyadera, T
    Kameoka, S
    Tomishige, K
    Kunimori, K
    IMPACT OF ZEOLITES AND OTHER POROUS MATERIALS ON THE NEW TECHNOLOGIES AT THE BEGINNING OF THE NEW MILLENNIUM, PTS A AND B, 2002, 142 : 557 - 564
  • [42] A DFT Study toward Understanding the High Activity of Fe-Exchanged Zeolites for the "Fast" Selective Catalytic Reduction of Nitrogen Oxides with Ammonia
    Li, Jun
    Li, Shuhua
    JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (43): : 16938 - 16944
  • [43] Selective catalytic reduction of NO by NH3 over vanadium-containing zeolites
    Wark, M
    Bruckner, A
    Liese, T
    Grunert, W
    JOURNAL OF CATALYSIS, 1998, 175 (01) : 48 - 61
  • [44] Kinetics and mechanism of the N2O reduction by NH3 on a Fe-zeolite-beta catalyst
    Coq, B
    Mauvezin, M
    Delahay, G
    Kieger, S
    JOURNAL OF CATALYSIS, 2000, 195 (02) : 298 - 303
  • [45] DELAMINATED FE2O3-PILLARED CLAY - ITS PREPARATION, CHARACTERIZATION, AND ACTIVITIES FOR SELECTIVE CATALYTIC REDUCTION OF NO BY NH3
    CHEN, JP
    HAUSLADEN, MC
    YANG, RT
    JOURNAL OF CATALYSIS, 1995, 151 (01) : 135 - 146
  • [46] Influence of iron state and acidity of zeolites on the catalytic activity of FeHBEA, FeHZSM-5 and FeHMOR in SCR of NO with NH3 and N2O decomposition
    Boron, Pawel
    Chmielarz, Lucjan
    Gurgul, Jacek
    Latka, Kazimierz
    Gil, Barbara
    Marszalek, Bartosz
    Dzwigaj, Stanislaw
    MICROPOROUS AND MESOPOROUS MATERIALS, 2015, 203 : 73 - 85
  • [47] N2O formation in the selective catalytic reduction of NOx with NH3 at low temperature on CuO-supported monolithic catalysts
    Suárez, S
    Martín, JA
    Yates, M
    Avila, R
    Blanco, J
    JOURNAL OF CATALYSIS, 2005, 229 (01) : 227 - 236
  • [48] A comparative study of N2O formation during the selective catalytic reduction of NOx with NH3 on zeolite supported Cu catalysts
    Chen, Hai-Ying
    Wei, Zhehao
    Kollar, Marton
    Gao, Feng
    Wang, Yilin
    Szanyi, Janos
    Peden, Charles H. F.
    JOURNAL OF CATALYSIS, 2015, 329 : 490 - 498
  • [49] Suppressed N2O formation during NH3 selective catalytic reduction using vanadium on zeolitic microporous TiO2
    Lee, Seung Gwan
    Lee, Hyun Jeong
    Song, Inhak
    Youn, Seunghee
    Kim, Do Heui
    Cho, Sung June
    SCIENTIFIC REPORTS, 2015, 5
  • [50] New insight on N2O formation over MnOx/TiO2 catalysts for selective catalytic reduction of NOx with NH3
    Zeng, Yiqing
    Lyu, Fengye
    Wang, Yanan
    Zhang, Shule
    Zhong, Qin
    Zhong, Zhaoxiang
    MOLECULAR CATALYSIS, 2022, 525