Effect of Active Component Doping on the Denitration Properties of Manganese Based Catalyst at Low Temperature
MENG Liubang1, FANG Jingrui2, GUAN Xuemao1
1 School of Material Science and Engineering, Henan Polytechnic University, Jiaozuo 454000; 2 State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024;
Abstract: Single manganese salt active component was modified by doping Ce and mixing manganese salts, and the mixing method with step-by-step was used to prepare a series of catalysts. The activity testing of catalysts presented that mixing manganese salts and doping Ce could both improve the activity of manganese base catalysts at low temperature, and the former′s effect was better than the latter. It was found through comparing that mechanical strength of catalyst was greatly increased by doping of active component. And BET results showed that the surface texture of manganese based catalyst with being doped and modified was greatly improved. XRD results of catalysts indicated that the active components of manganese base catalyst calcined at 500 ℃ existed in the form of amorphous state. Through analyzing NH3-TPD and H2-TPR of modified catalysts, compared to Ce doping into single manganese salt, surface acid amount and redox properties of catalyst was more significantly improved by the doping form of mixing manganese salts.
孟刘邦, 房晶瑞, 管学茂. 活性组分掺杂对低温锰基催化剂脱硝性能的影响*[J]. 《材料导报》期刊社, 2017, 31(14): 35-39.
MENG Liubang, FANG Jingrui, GUAN Xuemao. Effect of Active Component Doping on the Denitration Properties of Manganese Based Catalyst at Low Temperature. Materials Reports, 2017, 31(14): 35-39.
1 Blanco J, Avila P, Suárez S, et al. CuO/NiO monolithic catalysts for NOx removal from nitric acid plant flue gas[J]. Chem Eng J,2004,97(1):1. 2 Zhao Q, Xiang J, Sun L, et al. Adsorption and oxidation of NH3 and NO over sol-gel-derived CuO-CeO2-MnOx/γ-Al2O3 catalysts[J]. Energy Fuels,2009,23(3):1539. 3 Yang Y P, Yang Z P, Xu G, et al. Situation and prospect of consumption for China′s thermal power generation[J]. Proc CSEE,2013,33(23):1(in Chinese). 杨勇平, 杨志平, 徐钢, 等. 中国火力发电能耗状况及展望[J]. 中国电机工程学报,2013, 33(23):1. 4 Bosch H, Janssen F, Formation and control of nitrogen oxides [J]. Catal Today,1988,2:366. 5 Ma H Q, Yao Y, Ma J, et al. Study on MnOx/Ti-PILC for NH3-SCR of NO at low temperature[J]. J Eng Thermophys,2013,34(1):164(in Chinese). 马宏卿,姚燕,马娟,等. MnOx/Ti-PILC低温NH3-SCR脱除NO研究[J]. 工程热物理学报,2013,34(1):164. 6 Sjoerd K W, Brands D S, Smit H I, et al. Mechanism of the selective catalytic reduction of NO with NH3 over MnOx/Al2O3, Ⅱ reactivity of adsorbed NH3 and NO complexes[J]. J Catal,1997,171(1):219. 7 Yan P, Shen K, Zhang Y P, et al. Effect of former hasten body on catalyst of MnOx/TiO2 for low-temperature selective catalytic reduction of nitric oxide[J]. Environ Sci Technol,2012,35(11):56(in Chinese). 颜鹏, 沈凯, 张亚平, 等. 锰前驱体对 MnOx/TiO2催化剂低温选择性催化还原NO2影响[J]. 环境科学与技术,2012,35(11):56. 8 Guo J, Li C T, Lu P, et al. Research on SCR denitrification of MnOx/Al2O3 modified by CeO2 and its mechanism at low temperature[J]. Environ Sci,2011,32(8):2240(in Chinese). 郭静, 李彩亭, 路培, 等. CeO2改性MnOx/Al2O3的低温SCR法脱硝性能及机制研究[J]. 环境科学,2011,32(8):2240. 9 刘福东, 贺泓, 丁云. 用于NH3选择性催化还原NO的铁钛复合氧化物催化剂低温活性改进研究[C]∥ 第六届全国环境催化与环境材料学术会议论文集.成都,2009:427. 10 甄开吉,王国甲,毕颖丽, 等.催化作用基础[M]. 北京:科学出版社,2005:47. 11 Busca G, Larrubia M A, Arrighi L, et al. Catalytic abatement of NOx: Chemical and mechanistic aspects[J]. Catal Today,2005,107:139. 12 Busca G, Lietti L, Ramis G, et al. Chemical and mechanistic aspects of the selective catalytic reduction of NOx by ammonia over oxide catalysts: A review[J]. Appl Catal B: Environ,1998,18(1):1. 13 Bagnasco G, Busca G, Galli P, et al. Selective reduction of NO with NH3 on a new iron-vanadyl phosphate catalyst[J]. Appl Catal B: Environ,2000,28(2):135. 14 Forzatti P. Present status and perspectives in de-NOx SCR catalysis[J]. Appl Catal A: Gen,2001,222(1):221. 15 Jin R, Liu Y, Wu Z, et al. Low-temperature selective catalytic reduction of NO with NH3 over Mn Ce oxides supported on TiO2 and Al2O3: A comparative study [J]. Chemosphere,2010, 78(9):1160. 16 Wu Z, Tang N, Xiao L, et al. MnOx/TiO2 composite nanoxides synthesized by deposition-precipitation method as a superior catalyst for NO oxidation[J]. J Colloid Interface Sci,2010,352(1):143. 17 Lee S M, Park K H, Hong S C. MnOx/CeO2-TiO2 mixed oxide ca-talysts for the selective catalytic reduction of NO with NH3 at low temperature[J]. Chem Eng J,2012,195:323. 18 Kapteijn F, Singoredjo L, Andreini A, et al. Activity and selectivity of pure manganese oxides in the selective catalytic reduction of nitric oxide with ammonia[J]. Appl Catal B: Environ,1994,3(2):173. 19 Park T S, Jeong S K, Hong S H, et al. Selective catalytic reduction of nitrogen oxides with NH3 over natural manganese ore at low temperature[J]. Ind Eng Chem Res,2001,40(21):4491. 20 Roy S, Viswanath B, Hegde M S, et al. Low-temperature selective catalytic reduction of NO with NH3 over Ti0.9M0.1O2 (M= Cr, Mn, Fe, Co, Cu)[J].J Phys Chem C,2008,112(15):6002. 21 Lee S M, Lee H H, Hong S C. Influence of calcination temperature on Ce/TiO2 catalysis of selective catalytic oxidation of NH3 to N2[J]. Appl Catal A: Gen,2014,470:189. 22 Shen B X, Sun X, Yang X Y. Preparation of PILCS with different pillar materials loading Mn-Ce and de-NOx activity[J]. Proc CSEE,2013,33(011):7(in Chinese). 沈伯雄, 孙喜, 杨晓燕. 不同柱撑物负载Mn-Ce层柱黏土制备及脱硝性能[J]. 中国电机工程学报,2013,33(011):7. 23 Park K H, Lee S M, Kim S S, et al. Reversibility of Mn valence state in MnOx/TiO2 catalysts for low-temperature selective catalytic reduction for NO with NH3[J]. Catal Lett,2013,143(3):246. 24 Yang P Y, Tong L H, Zuo S F, et al. Influence of cerium on texture-structure and redox properties of manganese based catalysts[J]. J Chin Soc Rare Earths,2011,29(4):433(in Chinese). 杨卜源, 佟丽华, 左树锋, 等. 添加铈对锰基催化剂的织构-结构及其氧化还原性能的影响[J]. 中国稀土学报,2011,29(4):433. 25 Wan Q, Duan L, He K, et al. Removal of gaseous elemental mercury over a CeO2-WO3/TiO2 nanocomposite in simulated coal-fired flue gas[J]. Chem Eng J,2011,170(2):512.
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2017, Vol. 31 
