The enhanced resistance to P species of an Mn-Ti catalyst for selective catalytic reduction of NOx with NH3 by the modification with Mo

被引：24
作者：
Guo, Rui-tang [1 ,2 ]
Li, Ming-yuan [1 ,2 ]
Sun, Peng [1 ,2 ]
Liu, Shu-ming [1 ,2 ]
Wang, Shu-xian [1 ,2 ]
Pan, Wei-guo [1 ,2 ]
Liu, Shuai-wei [1 ,2 ]
Liu, Jian [1 ,2 ]
Sun, Xiao [1 ,2 ]
机构：
[1] Shanghai Univ Elect Power, Sch Energy Source & Mech Engn, Shanghai, Peoples R China
[2] Shanghai Engn Res Ctr Power Generat Environm Prot, Shanghai, Peoples R China
来源：
RSC ADVANCES | 2017年 / 7卷 / 32期
基金：
上海市自然科学基金;
关键词：
LOW-TEMPERATURE SCR; MANGANESE OXIDE CATALYSTS; CORE-SHELL STRUCTURE; MN/TIO2; CATALYST; CHEMICAL DEACTIVATION; MNOX/TIO2; CATALYSTS; NH3-SCR CATALYSTS; POTASSIUM RESISTANCE; CARBON NANOTUBES; NITROGEN-OXIDES;
D O I：
10.1039/c7ra01876b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Phosphorous has a deactivation effect on an SCR catalyst. In this study, the effect of Mo modification on the resistance to P species of a Mn-Ti catalyst for selective catalytic reduction of NOx with NH3 was investigated. It was found that the addition of Mo could greatly improve the P species tolerance of the Mn-Ti catalyst. From the characterization results of BET, XRD, H-2-TPR, NH3-TPD and XPS, it could be concluded that the modification of the Mn-Ti catalyst by Mo could enhance its specific surface area, redox ability and NH3 adsorption capacity, along with the generation of more surface chemisorbed oxygen species, as a result, greatly enhancing the P species resistance of the Mn-Ti catalyst. The results of an in situ DRIFT study indicated that the NH3-SCR reactions over Mn-Ti and Mn-Mo-Ti catalysts were governed by L-H mechanism (<= 200 degrees C) and E-R mechanism (> 200 degrees C) respectively.
引用
收藏
页码：19912 / 19923
页数：12
相关论文
共 88 条
[1]   DRIFT study of the interaction of NO and O2 with the surface of Ce0.62Zr0.38O2 as deNOx catalyst [J].
Adamowska, Malgorzata ;
Krzton, Andrzej ;
Najbar, Mieczyslawa ;
Da Costa, Patrick ;
Djega-Mariadassou, Gerald .
CATALYSIS TODAY, 2008, 137 (2-4) :288-291
[2]   Chemical deactivation by phosphorous under lean hydrothermal conditions over Cu/BEA NH3-SCR catalysts [J].
Andonova, Stanislava ;
Vovk, Evgeny ;
Sjoblom, Jonas ;
Ozensoy, Emrah ;
Olsson, Louise .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 147 :251-263
[3]   Nanostructured MnOx catalysts for low-temperature NOx SCR [J].
Andreoli, S. ;
Deorsola, F. A. ;
Galletti, C. ;
Pirone, R. .
CHEMICAL ENGINEERING JOURNAL, 2015, 278 :174-182
[4]   A complete reaction mechanism for standard and fast selective catalytic reduction of nitrogen oxides on low coverage VOx/TiO2(001) catalysts [J].
Arnarson, Logi ;
Falsig, Hanne ;
Rasmussen, Soren B. ;
Lauritsen, Jeppe V. ;
Moses, Poul Georg .
JOURNAL OF CATALYSIS, 2017, 346 :188-197
[5]   Impact of nitrogen oxides on the environment and human health: Mn-based materials for the NOx abatement [J].
Boningari, Thirupathi ;
Smirniotis, Panagiotis G. .
CURRENT OPINION IN CHEMICAL ENGINEERING, 2016, 13 :133-141
[6]   Deactivation of vanadia-based commercial SCR catalysts by polyphosphoric acids [J].
Castellino, Francesco ;
Rasmussen, Soren Birk ;
Jensen, Anker Degn ;
Johnsson, Jan Erik ;
Fehrmann, Rasmus .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 83 (1-2) :110-122
[7]   Influence of reaction products of K-getter fuel additives on commercial vanadia-based SCR catalysts Part II. Simultaneous addition of KCl, Ca(OH)2, H3PO4 and H2SO4 in a hot flue gas at a SCR pilot-scale setup [J].
Castellino, Francesco ;
Jensen, Anker Degn ;
Johnsson, Jan Erik ;
Fehrmann, Rasmus .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 86 (3-4) :206-215
[8]   DRIFT Study on Cerium-Tungsten/Titiania Catalyst for Selective Catalytic Reduction of NOx with NH3 [J].
Chen, Liang ;
Li, Junhua ;
Ge, Maofa .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (24) :9590-9596
[9]   The catalytic performance of Mn/TiWOx catalyst for selective catalytic reduction of NOx with NH3 [J].
Chen, Qi-lin ;
Guo, Rui-tang ;
Wang, Qing-shan ;
Pan, Wei-guo ;
Wang, Wen-huan ;
Yang, Ning-zhi ;
Lu, Chen-zi ;
Wang, Shu-xian .
FUEL, 2016, 181 :852-858
[10]   Promoting effect of Nd on the reduction of NO with NH3 over CeO2 supported by activated semi-coke: an in situ DRIFTS study [J].
Chen, Yan ;
Wang, Jinping ;
Yan, Zheng ;
Liu, Lili ;
Zhang, Zuotai ;
Wang, Xidong .
CATALYSIS SCIENCE & TECHNOLOGY, 2015, 5 (04) :2251-2259
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