Simplified synthesis of K2CO3-promoted hydrotalcite based on hydroxide-form precursors: Effect of Mg/Al/K2CO3 ratio on high-temperature CO2 sorption capacity

Hee Jin Jang; Suji Kim; Ki Bong Lee

Korean Journal of Chemical Engineering, Vol.34, No.1, 1-5, January, 2017

DOI10.1007/s11814-016-0294-0 Export Citation

Simplified synthesis of K2CO3-promoted hydrotalcite based on hydroxide-form precursors: Effect of Mg/Al/K2CO3 ratio on high-temperature CO2 sorption capacity

Hee Jin Jang, Suji Kim, and Ki Bong Lee^†

Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea

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Hydrotalcite was synthesized from hydroxide-form precursors to prepare a novel high-temperature CO2 sorbent, and the effect of Mg/Al ratio on CO2 sorption was studied. To enhance the CO2 sorption capacity of the sorbent, K2CO3 was coprecipitated during the synthetic reaction. X-ray diffraction analysis indicated that the prepared samples had a well-defined crystalline hydrotalcite structure, and confirmed that K2CO3 was successfully coprecipitated in the samples. The morphology of the hydrotalcite was confirmed by scanning electron microscopy, and N2 adsorption analysis was used to estimate its surface area and pore volume. In addition, thermogravimetric analysis was used to measure its CO2 sorption capacity, and the results revealed that the Mg : Al : K2CO3 ratio used in the preparation has an optimum value for maximum CO2 sorption capacity.

Keywords:Hydrotalcite;Sorption;CO2 Sorbent;K2CO3 Promotion;Hydrothermal Synthesis

[References]

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Jang HJ, Lee CH, Kim S, Kim SH, Lee KB, ACS Appl. Mater. Interfaces, 6, 6914 (2014)
Zhang Z, Chen GM, Xu KL, Appl. Clay Sci., 72, 206 (2013)
Yang WS, Kim Y, Liu PKT, Sahimi M, Tsotsis TT, Chem. Eng. Sci., 57(15), 2945 (2002)
Rey F, Fornes V, Rojo JM, J. Chem. Soc.-Faraday Trans., 88, 2233 (1992)
Min YJ, Hong SM, Kim SH, Lee KB, Jeon SG, Korean J. Chem. Eng., 31(9), 1668 (2014)
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[Referenced By]

[1] Hofmann DJ, Butler JH, Dlugokencky EJ, Elkins JW, Masarie K, Montzka SA, Tans P, Tellus B, 58, 614 (2006)

[2] Ida J, Lin YS, Environ. Sci. Technol., 37, 1999 (2003)

[3] Liu WQ, An H, Qin CL, Yin JJ, Wang GX, Feng B, Xu MH, Energy Fuels, 26(5), 2751 (2012)

[4] Garcia-Gallastegui A, Iruretagoyena D, Mokhtar M, Asiri AM, Basahel SN, Al-Thabaiti SA, Alyoubi AO, Chadwick D, Shaffer MSP, J. Mater. Chem., 22, 13932 (2012)

[5] Li F, Jiang XR, Evans DG, Duan X, J. Porous Mat., 12, 55 (2005)

[6] Reddy MKR, Xu ZP, Lu GQ, da Costa JCD, Ind. Eng. Chem. Res., 45(22), 7504 (2006)

[7] Feng L, Duan X, Structure and Bonding, 119, 193 (2006)

[8] Barakos N, Pasias S, Papayannakos N, Bioresour. Technol., 99(11), 5037 (2008)

[9] Debecker DP, Gaigneaux EM, Busca G, Chem.-Eur. J., 15, 3920 (2009)

[10] Yavuz CT, Shinall BD, Iretskii AV, White MG, Golden T, Atilhan M, Ford PC, Stucky GD, Chem. Mater., 21, 3473 (2009)

[11] Lee JM, Min YJ, Lee KB, Jeon SG, Na JG, Ryu HJ, Langmuir, 26(24), 18788 (2010)

[12] Wang QA, Tay HH, Ng DJW, Chen LW, Liu Y, Chang J, Zhong ZY, Luo JZ, Borgna A, ChemSusChem, 3, 965 (2010)

[13] Wang Q, Tay HH, Guo ZH, Chen LW, Liu Y, Chang J, Zhong ZY, Luo JZ, Borgna A, Appl. Clay Sci., 55, 18 (2012)

[14] Walspurger S, Boels L, Cobden PD, Elzinga GD, Haije WG, van den Brink RW, ChemSusChem, 1, 643 (2008)

[15] Jang HJ, Lee CH, Kim S, Kim SH, Lee KB, ACS Appl. Mater. Interfaces, 6, 6914 (2014)

[16] Zhang Z, Chen GM, Xu KL, Appl. Clay Sci., 72, 206 (2013)

[17] Yang WS, Kim Y, Liu PKT, Sahimi M, Tsotsis TT, Chem. Eng. Sci., 57(15), 2945 (2002)

[18] Rey F, Fornes V, Rojo JM, J. Chem. Soc.-Faraday Trans., 88, 2233 (1992)

[19] Min YJ, Hong SM, Kim SH, Lee KB, Jeon SG, Korean J. Chem. Eng., 31(9), 1668 (2014)

[20] Yang JI, Kim JN, Korean J. Chem. Eng., 23(1), 77 (2006)

[21] Yong Z, Mata V, Rodriguez AE, Ind. Eng. Chem. Res., 40(1), 204 (2001)