Characteristics of Manganese Supported on Hydrous Titanium Oxide Catalysts for the Selective Catalytic Reduction of NOx with Ammonia

被引：15
作者：
Song, Inhak [1 ]
Youn, Seunghee [1 ]
Kim, Do Heui [1 ]
机构：
[1] Seoul Natl Univ, Inst Chem Proc, Sch Chem & Biol Engn, Seoul 151744, South Korea
来源：
TOPICS IN CATALYSIS | 2016年 / 59卷 / 10-12期
关键词：
NH3; SCR; Hydrous titania (TiO2); Manganse (Mn); Wet impregnation; LOW-TEMPERATURE SCR; NH3; OXIDATION;
D O I：
10.1007/s11244-016-0582-2
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Mn oxide supported on two different groups of titania, hydrous or crystalline titanium oxide, were investigated for the selective catalytic reduction of NOx with NH3 (NH3 SCR). Hydrous titania was prepared by hydrolysis of titanium tetraisopropoxide followed by drying, and crystalline titanium oxide was prepared with further calcination of the hydrous titania. Mn supported on hydrous TiO2 catalyst exhibited higher NOx conversion over wide temperature range (150-400 degrees C) as well as the suppressed formation of nitrous oxide compared to Mn supported on crystalline TiO2. Also, Mn/hydrous TiO2 showed relatively lower performance in ammonia oxidation than Mn/crystalline TiO2 which is regarded as the side reaction. Several combined characterization results indicate that manganese species more strongly interact with hydrous TiO2 than crystalline TiO2, resulting in different redox behavior and oxidation state of Mn oxides. It can be concluded that the activity and selectivity of Mn/TiO2 catalysts in NH3 SCR reaction were affected by initial state of titania support.
引用
收藏
页码：1008 / 1012
页数：5
相关论文
共 15 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 [J].
Boningari, Thirupathi ;
Ettireddy, Padmanabha R. ;
Somogyvari, Arpad ;
Liu, Yi ;
Vorontsov, Alexander ;
McDonald, Carl A. ;
Smirniotis, Panagiotis G. .
JOURNAL OF CATALYSIS, 2015, 325 :145-155
[2]   Structure of WOx/TiO2 catalysts prepared from hydrous titanium oxide hydroxide:: Influence of preparation parameters [J].
Eibl, S ;
Gates, BC ;
Knözinger, H .
LANGMUIR, 2001, 17 (01) :107-115
[3]   Surface characterization studies of TiO2 supported manganese oxide catalysts for low temperature SCR of NO with NH3 [J].
Ettireddy, Padmanabha Reddy ;
Ettireddy, Neeraja ;
Mamedov, Sergey ;
Boolchand, Punit ;
Smirniotis, Panagiotis G. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 76 (1-2) :123-134
[4]   Effects of preparation methods for V2O5-TiO2 aerogel catalysts on the selective catalytic reduction of NO with NH3 [J].
Kang, Min ;
Choi, Jinsoon ;
Kim, Yong Tae ;
Park, Eun Duck ;
Shin, Chee Burm ;
Suh, Dong Jin ;
Yie, Jae Eui .
KOREAN JOURNAL OF CHEMICAL ENGINEERING, 2009, 26 (03) :884-889
[5]   ACTIVITY AND SELECTIVITY OF PURE MANGANESE OXIDES IN THE SELECTIVE CATALYTIC REDUCTION OF NITRIC-OXIDE WITH AMMONIA [J].
KAPTEIJN, F ;
SINGOREDJO, L ;
ANDREINI, A ;
MOULIJN, JA .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1994, 3 (2-3) :173-189
[6]   Effects of precursors on the surface Mn species and the activities for NO reduction over MnOx/TiO2 catalysts [J].
Li, Junhua ;
Chen, Jianjun ;
Ke, Rui ;
Luo, Chuankui ;
Hao, Jiming .
CATALYSIS COMMUNICATIONS, 2007, 8 (12) :1896-1900
[7]   Selective catalytic reduction of NOx with NH3 over Mn-Ce mixed oxide catalyst at low temperatures [J].
Liu, Zhiming ;
Yi, Yang ;
Zhang, Shaoxuan ;
Zhu, Tianle ;
Zhu, Junzhi ;
Wang, Jinggang .
CATALYSIS TODAY, 2013, 216 :76-81
[8]   Manganese-lanthanum oxides modified with silver for the catalytic combustion of methane [J].
Machocki, A ;
Ioannides, T ;
Stasinska, B ;
Gac, W ;
Avgouropoulos, G ;
Delimaris, D ;
Grzegorczyk, W ;
Pasieczna, S .
JOURNAL OF CATALYSIS, 2004, 227 (02) :282-296
[9]   A review on nano-TiO2 sol-gel type syntheses and its applications [J].
Macwan, D. P. ;
Dave, Pragnesh N. ;
Chaturvedi, Shalini .
JOURNAL OF MATERIALS SCIENCE, 2011, 46 (11) :3669-3686
[10]  
Monshi A., 2012, World J. Nano Sci. Eng, V2, P154, DOI [DOI 10.4236/WJNSE.2012.23020, 10.4236/wjnse.2012.23020]
12