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Korean Journal of Chemical Engineering, Vol.39, No.9, 2334-2344, 2022
The effect of CNTs on V-Ce/TiO2 for low-temperature selective catalytic reduction of NO
Carbon nanotubes (CNTs) are widely utilized as catalyst promoters because of their unique structure and electrical properties. In this study, CNTs were added as a promoter to V-Ce/TiO2 (VCT), which is a commercial catalyst used for the NH3-SCR reaction. We investigated the role of CNTs in the V-Ce/TiO2-CNTs (VCTC) catalyst. Therefore, we characterized them using X-ray diffraction (XRD), N2 adsorption/desorption experiments, thermogravimetric analysis (TGA), transmission electron microscopy (TEM), temperature-programmed reduction of H2 (H2-TPR), temperature- programmed desorption of NO/NH3 (NO/NH3-TPD), X-ray photoelectron spectroscopy (XPS), and in situ Fourier transform infrared spectroscopy (FT-IR). Higher NO conversion and N2 selectivity were achieved in the VCTC catalyst than in the VCT catalyst, confirming the favorable effect of CNTs on the NH3-SCR reaction. Additionally, CNTs considerably influenced the crystal structure formation of the metal oxides located on the catalyst surface. Consequently, metal-metal and metal-support undergo distinct interactions, thereby positively influencing catalytic characteristics such as redox properties, oxidation state, acid sites, and the formation of nitrate species.
[References]
- Skalska K, Miller JS, Ledakowicz S, Sci. Total Environ., 408, 3976, 2010
- Gilhespy SL, Anthony S, Cardenas L, Chadwick D, del Prado A, Li C, Misselbrook T, Rees RM, Salas W, Sanz-Cobena A, Ecol. Model., 292, 51, 2014
- Han L, Cai S, Gao M, Hasegawa JY, Wang P, Zhang J, Shi L, Zhang D, Chem. Rev., 119, 10916, 2019
- Lian Z, Wei J, Shan W, Yu Y, Radjenovic PM, Zhang H, He G, Liu F, Li JF, Tian ZQ, He H, J. Am. Chem. Soc., 143, 10454, 2021
- Tong T, Chen J, Xiong S, Yang W, Yang Q, Yang L, Peng Y, Liu Z, Li J, Catal. Sci. Technol., 9, 3779, 2019
- Liu Z, Li Y, Zhu T, Su H, Zhu J, Ind. Eng. Chem. Res., 53, 12964, 2014
- Liu Y, Zhao J, Lee JM, ChemCatChem, 10, 1499, 2018
- Xu J, Chen G, Guo F, Xie J, Chem. Eng. J., 353, 507, 2018
- Shen B, Wang F, Zhao B, Li Y, Wang Y, J. Ind. Eng. Chem., 33, 262, 2016
- Kang YS, Kim SS, Hong SC, J. Ind. Eng. Chem., 30, 197, 2015
- Liu C, Shi JW, Gao C, Niu C, Appl. Catal. A: Gen., 522, 54, 2016
- Zeng Y, Zhang S, Wang Y, Liu G, Zhong Q, RSC Adv., 7, 23348, 2017
- Rodriguez NM, Kim MS, Baker RTK, J. Phys. Chem., 98, 13108, 1994
- Huang B, Huang R, Jin D, Ye D, Catal. Today, 126, 279, 2007
- Su Y, Fan B, Wang L, Liu Y, Huang B, Fu M, Chen L, Ye D, Catal. Today, 201, 115, 2013
- Valtanen A, Huuhtanen M, Rautio AR, Kolli T, Kordás K, Keiski RL, Top. Catal., 58, 984, 2015
- Lam E, Luong JHT, ACS Catal., 4, 3393, 2014
- Liu Z, Zhang S, Li J, Zhu J, Ma L, Appl. Catal. B: Environ., 158-159, 11, 2014
- Gallastegi-Villa M, Aranzabal A, González-Marcos MP, Markaide-Aiastui BA, González-Marcos JA, González-Velasco JR, J. Ind. Eng. Chem., 81, 440, 2020
- Fang J, Bi X, Si D, Jiang Z, Huang W, Appl. Surf. Sci., 253, 8952, 2007
- Gao X, Jiang Y, Zhong Y, Luo Z, Cen K, J. Hazard. Mater., 174, 734, 2010
- Ma Z, Yang H, Li Q, Zheng J, Zhang X, Appl. Catal. A: Gen., 427-428, 43, 2012
- Kim MJ, Kim HJ, Lee SJ, Ryu IS, Yoon HC, Lee KB, Jeon SG, Catal. Commun., 130, 105764, 2019
- Kim MJ, Lee SJ, Ryu IS, Jeon MW, Moon SH, Roh HS, Jeon SG, Mol. Catal., 442, 202, 2017
- Kim SE, Jeong SK, Park KT, Lee KY, Kim HJ, Catal. Commun., 148, 106167, 2021
- Ye B, Kim SI, Lee M, Ezazi M, Kim HD, Kwon G, Lee DH, RSC Adv., 10, 16700, 2020
- Chen L, Li J, Ge M, J. Phys. Chem. C, 113, 21177, 2009
- Kim MJ, Youn JR, Lee SJ, Ryu IS, Nam SC, Jeong SK, Jeon SG, J. Ind. Eng. Chem., 108, 438, 2022
- Kim MJ, Youn JR, Kim HJ, Seo MW, Lee D, Go KS, Lee KB, Jeon SG, Int. J. Hydrog. Energy, 45, 24595, 2020
- Yao X, Kong T, Chen L, Ding S, Yang F, Dong L, Appl. Surf. Sci., 420, 407, 2017
- Fan Y, Ling W, Huang B, Dong L, Yu C, Xi H, J. Ind. Eng. Chem., 56, 108, 2017
- Youn JR, Kim MJ, Lee SJ, Ryu IS, Yoon HC, Jeong SK, Lee K, Jeon SG, Catal. Commun., 152, 106282, 2021
- Song S, Jiang S, Appl. Catal. B: Environ., 117-118, 346, 2012
- Wang X, Zheng Y, Xu Z, Liu Y, Wang X, Catal. Sci. Technol., 4, 1738, 2014
- Sharma HK, Sharma SK, Vemula K, Koirala AR, Yadav HM, Singh BP, Solid State Sci., 112, 106492, 2021
- Chou PW, Wang YS, Lin CC, Chen YJ, Cheng CL, Wong MS, Surf. Coat. Technol., 204, 834, 2009
- Zhao W, Zhang K, Wu L, Wang Q, Shang D, Zhong Q, J. Colloid Interface Sci., 581, 76, 2021
- Ko A, Woo Y, Jang J, Jung Y, Pyo Y, Jo H, Lim O, Lee YJ, J. Ind. Eng. Chem., 78, 433, 2019
- Chen C, Cao Y, Liu S, Jia W, Appl. Surf. Sci., 507, 145153, 2020
- Chao M, Mao D, Li G, Li G, Yu J, Guo X, J. Sol-Gel Sci. Technol., 95, 332, 2020
- Nam KB, Kwon DW, Hong SC, Appl. Catal. A: Gen., 542, 55, 2017
- Liu Y, Hou Y, Han X, Wang J, Guo Y, Xiang N, Bai Y, Huang Z, ChemCatChem, 12, 953, 2019
- Li Z, Dai S, Ma L, Qu Z, Yan N, Li J, Chem. Eng. J., 413, 127447, 2021
- Cao F, Chen J, Ni M, Song H, Xiao G, Wu W, Gao X, Cen K, RSC Adv., 4, 16281, 2014
- Won JM, Kim JT, Jeong SK, Hwang SM, Appl. Surf. Sci., 566, 150632, 2021
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