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Received December 30, 2013
Accepted February 27, 2014
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Removal of elemental mercury from simulated flue gas by cerium oxide modified attapulgite
1School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China 2College of Chemical Engineering and Biological, Yancheng Institute of Technology, Yancheng 224051, P. R. China
Korean Journal of Chemical Engineering, August 2014, 31(8), 1405-1412(8), 10.1007/s11814-014-0074-7
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Abstract
A novel catalyst CeO2/ATP was developed to remove Hg0 from coal fired gas. This is new way to use the facile, cheap and larger BET specific surface area catalyst attapulgite (ATP) as support to remove Hg0 from coal fired gas. The Hg0 removal and oxidation efficiency of CeO2/ATP (1 : 1) is up to 97.75% and 92.23% at 200 ℃, respectively. We also found that ATP plays an important role in improving the catalyst activity of CeO2/ATP, which can make CeO2/_x000D_
ATP have more stable catalyst activity at broader temperature range and obtain lower optimum activity temperature. Other influencing factors, such as temperature and flue gas environment (SO2, Cl2, NO), are also investigated in order to get a clear understanding of the experiment. The formation mechanisms are also proposed.
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Qu Z, Yan NQ, Liu P, Jia JP, Yang SJ, J. Hazard. Mater., 183(1-3), 132 (2010)
Li HL, Wu CY, Li Y, Li LQ, Zhao YC, Zhang JY, Chem. Eng. J., 219, 319 (2013)
Ji L, Sreekanth PM, Smirniotis PG, Thiel SW, Pinto NG, Energy Fuels, 22(4), 2299 (2008)
Kong FH, Qiu JR, Liu H, Zhao R, Ai ZH, J. Environ. Sci., 23, 699 (2011)
Yamaguchi A, Akiho H, Ito S, Powder Technol., 180(1-2), 222 (2008)
He S, Zhou JS, Zhu YQ, Luo ZY, Ni MJ, Cen KF, Energy Fuels, 23(1), 253 (2009)
Tian LH, Li CT, Li Q, Zeng GM, Gao Z, Li SH, Fan XP, Fuel, 88(9), 1687 (2009)
Fan XP, Li CT, Zeng GM, Gao Z, Chen L, Zhang W, Gao HL, Energy Fuels, 24, 4250 (2010)
Wen XY, Li CT, Fan XP, Gao HL, Zhang W, Chen L, Zeng GM, Zhao YP, Energy Fuels, 25(7), 2939 (2011)
Hou WH, Zhou JS, Qi P, Gao X, Luo ZY, Chem. Eng. J., 241, 131 (2014)
Li HL, Wu CY, Li LQ, Li Y, Zhao YC, Zhang JY, Fuel, 113, 726 (2013)
Wan Q, Duan L, He KB, Li JH, Chem. Eng. J., 170(2-3), 512 (2011)
Alami D, Environ. Eng. Res., 18, 211 (2013)
Cao JL, Shao GS, Wang Y, Liu YP, Yuan ZY, Catal. Commun., 9, 2555 (2008)
Barrios MS, Gonzalez LVF, Rodriguez MAV, Pozas JMM, Appl. Clay Sci., 10, 247 (1995)
Chen ZG, Chen F, Li XZ, Lu XW, Ni CY, Zhao XB, J. Rare Earths, 28, 566 (2010)
Chen H, Wang AQ, J. Colloid Interface Sci., 307(2), 309 (2007)
Huang JH, Liu YF, Liu Y, Wang XG, J. Am. Oil Chem. Soc., 84, 687 (2007)
Zhao DF, Zhou J, Liu N, Mater. Charact., 58, 249 (2007)
Melo DMA, Ruiz JAC, Melo MAF, Sobrinho EV, Martinelli AE, J. Alloy. Compd., 344, 352 (2002)
Miao SD, Liu ZM, Zhang ZF, Han BX, Miao ZJ, Ding KL, An GM, J. Phys. Chem. C, 111, 2185 (2007)
Zhao DF, Zhou J, Liu N, Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process., 431, 256 (2006)
Melo DMA, Ruiz JAC, Melo MAF, Sobrinho EV, Schmall M, Microporous Mesoporous Mater., 38, 345 (2000)
Cao JL, Shao GS, Wang Y, Liu YP, Yuan ZY, Catal. Commun., 9, 2555 (2008)
Liu YS, Liu P, Su ZX, Li FS, Wen FS, Appl. Surf. Sci., 255(5), 2020 (2008)
Zhang LL, Lv FJ, Zhang WG, Li RQ, Zhong H, Zhao YJ, Zhang Y, Wang X, J. Hazard. Mater., 171(1-3), 294 (2009)
Gnanam S, Rajendran V, J. Sol-Gel Sci. Technol., 58, 62 (2011)
Li XZ, Ni CY, Yao C, Chen ZG, Appl. Catal. B: Environ., 117, 118 (2012)
Zhang G, He ZL, Xu W, Chem. Eng. J., 183, 315 (2012)
Zhang DS, Fu HX, Shi LY, Pan CS, Li Q, Chu YL, Yu WJ, Inorg. Chem., 46(7), 2446 (2007)
Li HL, Li Y, Wu CY, Zhang JY, Chem. Eng. J., 169(1-3), 186 (2011)
Norton GA, Yang HQ, Brown RC, Laudal DL, Dunham GE, Erjavec J, Fuel, 82(2), 107 (2003)
Miller SJ, Dunham GE, Olson ES, Brown TD, Fuel Process. Technol., 65, 343 (2000)
