Sb modified Fe-Mn/TiO2 catalyst for the reduction of NO x with NH3 at low temperatures

被引：5

作者：

Choi, Hyun ^{[1
,2
]}

Jeong, Young Eun ^{[1
,2
]}

Kumar, Pullur Anil ^{[1
]}

Lee, Kwan-Young ^{[2
]}

Ha, Heon Phil ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Mat Architecturing Res Ctr, Seoul 02792, South Korea

[2] Korea Univ, Dept Chem & Biol Engn, Seoul 136701, South Korea

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2018年 / 44卷 / 06期

关键词：

Sb influence; Mn-based catalysts; NOx conversion; Acidity; Redox properties; MIXED-OXIDE CATALYSTS; NITRIC-OXIDE; MODIFIED MNOX/TIO2; MANGANESE OXIDES; SCR; MN; FE; PERFORMANCE; MN/TIO2; CERIA;

D O I：

10.1007/s11164-018-3378-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Manganese-based catalysts have attracted much attention due to their excellent performance for NO reduction with NH3 (NH3-SCR) at low temperatures. In the current study, the novel metal Sb was modified into Mn/TiO2 and Fe-Mn/TiO2, and the NO (x) conversion was compared with those of Mn/TiO2 and Fe-Mn/TiO2 catalysts to investigate the effect of the Sb. The NO (x) reduction activities of the catalysts were evaluated in the temperature range of 100-250 A degrees C at a space velocity of 60,000 h(-1). The physicochemical properties of all the catalysts were characterized by Brunauer-Emmett-Teller surface area, temperature-programmed desorption of ammonia, temperature-programmed reduction, X-ray photoelectron spectroscopy, X-ray diffraction, and high-resolution transmission electron microscopy. Interestingly, the Sb-promoted Mn-based catalysts showed significantly higher NO (x) conversion than the other catalysts with or without 6 vol% of H2O. The high performance of the Sb-modified catalysts could be related to the increase of acid sites and redox properties.

引用

页码：3737 / 3751

页数：15

共 41 条

[1] Influence of elevated surface texture hydrated titania on Ce-doped Mn/TiO2 catalysts for the low-temperature SCR of NOx under oxygen-rich conditions
Boningari, Thirupathi
Ettireddy, Padmanabha R.
Somogyvari, Arpad
Liu, Yi
Vorontsov, Alexander
McDonald, Carl A.
Smirniotis, Panagiotis G.
[J]. JOURNAL OF CATALYSIS, 2015, 325 : 145 - 155
[2] Bosch H., 1988, Catalysis Today, V2, P369, DOI [DOI 10.1016/0920-5861(88)80002-6, 10.1016/B978-0-444-98919-2.50005-3, DOI 10.1016/B978-0-444-98919-2.50005-3]
[3] SELECTIVE CATALYTIC REDUCTION OF NO(X) USING ZEOLITIC CATALYSTS FOR HIGH-TEMPERATURE APPLICATIONS
BYRNE, JW
CHEN, JM
SPERONELLO, BK
[J]. CATALYSIS TODAY, 1992, 13 (01) : 33 - 42
[4] ROLE OF WO3 IN MIXED V2O5-WO3/TIO2 CATALYSTS FOR SELECTIVE CATALYTIC REDUCTION OF NITRIC-OXIDE WITH AMMONIA
CHEN, JP
YANG, RT
[J]. APPLIED CATALYSIS A-GENERAL, 1992, 80 (01) : 135 - 148
[5] Cr-MnOx mixed-oxide catalysts for selective catalytic reduction of NOx with NH3 at low temperature
Chen, Zhihang
Yang, Qing
Li, Hua
Li, Xuehui
Wang, Lefu
Tsang, Shik Chi
[J]. JOURNAL OF CATALYSIS, 2010, 276 (01) : 56 - 65
[6] Surface characterization studies of TiO2 supported manganese oxide catalysts for low temperature SCR of NO with NH3
Ettireddy, Padmanabha Reddy
Ettireddy, Neeraja
Mamedov, Sergey
Boolchand, Punit
Smirniotis, Panagiotis G.
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 76 (1-2) : 123 - 134
[7] Mechanistic Aspects of deNOx Processing over TiO2 Supported Co-Mn Oxide Catalysts: Structure-Activity Relationships and In Situ DRIFTs Analysis
Hu, Hang
Cai, Sixiang
Li, Hongrui
Huang, Lei
Shi, Liyi
Zhang, Dengsong
[J]. ACS CATALYSIS, 2015, 5 (10): : 6069 - 6077
[8] Jina R., 2014, APPL CATAL B-ENVIRON, V148-149, P582
[9] Cu-Mn mixed oxides for low temperature NO reduction with NH3
Kang, M
Park, ED
Kim, JM
Yie, JE
[J]. CATALYSIS TODAY, 2006, 111 (3-4) : 236 - 241
[10] ACTIVITY AND SELECTIVITY OF PURE MANGANESE OXIDES IN THE SELECTIVE CATALYTIC REDUCTION OF NITRIC-OXIDE WITH AMMONIA
KAPTEIJN, F
SINGOREDJO, L
ANDREINI, A
MOULIJN, JA
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 1994, 3 (2-3) : 173 - 189

← 1 2 3 4 5 →