Enhanced SF6 recovery by hierarchically structured MFI zeolite

Chong Yang Chuah; Suyeon Yu; Kyungsu Na; Tae-Hyun Bae

Journal of Industrial and Engineering Chemistry, Vol.62, 64-71, June, 2018

DOI10.1016/j.jiec.2017.12.045 Export Citation

Enhanced SF6 recovery by hierarchically structured MFI zeolite

Chong Yang Chuah¹, Suyeon Yu², Kyungsu Na^{2, †}, and Tae-Hyun Bae^{1, 3, †}

¹School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
²Department of Chemistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
³Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore

E-mail:,

A hierarchical zeolite MFI has been synthesised and investigated for its potential feasibility in SF6/N2 separation. Zeolite MFI possessing a hierarchical microporous.mesoporous structure (MFI-2) displayed an enhanced SF6/N2 selectivity at 40 °C as compared to bulk MFI (MFI-1). More importantly, at both 25 and 40 °C, drastically improved SF6 adsorption kinetics were observed for MFI-2, owing to the presence of mesopores that can facilitate the transport of SF6 within the sorbent. Such improved adsorption kinetics allows a rapid adsorption.desorption cycling in an industrial process, which was proven by the breakthrough analysis. Furthermore, MFI-2 was found to have a much lower isosteric heat of adsorption than MFI-1, indicating its feasibility in the industrial operation as it does not require a large energy penalty for regeneration. Further evaluation with an idealised vacuum swing adsorption (VSA) model revealed that MFI-2 can exhibit more competitive performance at 40 °C than at room temperature.

Keywords:SF6;Zeolite MFI;Hierarchical structure;Vacuum swing adsorption (VSA);Ideal adsorbed solution theory (IAST)

[References]

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[2] Fang X, Hu X, Janssens-Maenhout G, Wu J, Han J, Su S, Zhang J, Hu J, Environ. Sci. Technol., 47, 3848 (2013)

[3] Lee HM, Chang MB, Wu KY, J. Air Waste Manage. Assoc., 54, 960 (2004)

[4] Yamamoto O, Takuma T, Kinouchi M, IEEE Electr. Insul. Mag., 18, 32 (2002)

[5] Inami K, Maeda Y, Habuchi Y, Yoshimura M, Hamano S, Hama H, Electr. Eng. Japan, 137, 25 (2001)

[6] Liu W, Su Z, Qi J, Zhu F, Zhao Y, Ma F, Yuan X, Chen Y, IOP Conference Series: Earth and Environmental Science, IOP Publishing, 2017, pp. 012002.

[7] Cha I, Lee S, Lee JD, Lee GW, Seo Y, Environ. Sci. Technol., 44, 6117 (2010)

[8] Builes S, Roussel T, Vega LF, AlChE J., 57, 962 (2011)

[9] Cao D, Sircar S, Adsorption, 7, 73 (2001)

[10] Cao DV, Sircar S, Ind. Eng. Chem. Res., 40(1), 156 (2001)

[11] Sun MS, Shah DB, Xu HH, Talu O, J. Phys. Chem. B, 102(8), 1466 (1998)

[12] Dunne JA, Mariwals R, Rao M, Sircar S, Gorte RJ, Myers AL, Langmuir, 12(24), 5888 (1996)

[13] Dunne JA, Rao M, Sircar S, Gorte RJ, Myers AL, Langmuir, 12(24), 5896 (1996)

[14] Bandosz TJ, Jagiello J, Schwarz JA, J. Chem. Eng. Data, 41(4), 880 (1996)

[15] Muller EA, Environ. Sci. Technol., 39, 8736 (2005)

[16] Jagiello J, Bandosz TJ, Putyera K, Schwarz JA, J. Chem. Eng. Data, 40(6), 1288 (1995)

[17] Jagiełło J, Bandosz TJ, Putyera K, Schwarz JA, J. Chem. Soc.-Faraday Trans., 91, 2929 (1995)

[18] Fatemi SM, Abbasi Z, Rajabzadeh H, Hashemizadeh SA, Deldar AN, Eur. Phys. J. D, 71, 194 (2017)

[19] Thomas P, Xia Y, Boyd DA, Hopkins TA, Hess GB, J. Chem. Phys., 131, 124709 (2009)

[20] Chiang YC, Wu PY, J. Hazard. Mater., 178(1-3), 729 (2010)

[21] Hasell T, Miklitz M, Stephenson A, Little MA, Chong SY, Clowes R, Chen LJ, Holden D, Tribello GA, Jelfs KE, Cooper AI, J. Am. Chem. Soc., 138(5), 1653 (2016)

[22] Senkovska I, Barea E, Navarro JAR, Kaskel S, Microporous Mesoporous Mater., 156, 115 (2012)

[23] Kim PJ, You YW, Park H, Chang JS, Bae YS, Lee CH, Suh JK, Chem. Eng. J., 262, 683 (2015)

[24] Kim MB, Yoon TU, Hong DY, Kim SY, Lee SJ, Kim SI, Lee SK, Chang JS, Bae YS, Chem. Eng. J., 276, 315 (2015)

[25] Chuah CY, Goh K, Bae TH, J. Phys. Chem. C, 121, 6748 (2017)

[26] Choi M, Cho HS, Srivastava R, Venkatesan C, Choi DH, Ryoo R, Nat. Mater., 5(9), 718 (2006)

[27] Walton KS, Snurr RQ, J. Am. Chem. Soc., 129(27), 8552 (2007)

[28] Bae TH, Hudson MR, Mason JA, Queen WL, Dutton JJ, Sumida K, Micklash KJ, Kaye SS, Brown CM, Long JR, Energy Environ. Sci., 6, 128 (2013)

[29] Kim MB, Lee SJ, Lee CY, Bae YS, Microporous Mesoporous Mater., 190, 356 (2014)

[30] Myers A, Prausnitz JM, AlChE J., 11, 121 (1965)

[31] Czepirski L, JagieŁŁo J, Chem. Eng. Sci., 44, 797 (1989)

[32] Bae YS, Snurr RQ, Angew. Chem.-Int. Edit., 50, 11586 (2011)

[33] Yang Y, Chuah CY, Gong H, Bae TH, J. CO2 Util., 19, 214 (2017)

[34] Na K, Choi M, Ryoo R, J. Mater. Chem., 19, 6713 (2009)

[35] Nguyen TH, Kim S, Yoon M, Bae TH, ChemSusChem, 9, 455 (2016)

[36] Srivastava R, Choi M, Ryoo R, Chem. Commun., 4489 (2006).

[37] Goj A, Sholl DS, Akten ED, Kohen D, J. Phys. Chem. B, 106(33), 8367 (2002)

[38] Krishna R, van Baten JM, Sep. Purif. Technol., 61(3), 414 (2008)

[39] Dominguez G, Hernandez-Huesca R, Aguilar-Armenta G, J. Mex. Chem. Soc., 54, 111 (2010)