Synthesis of Stable Mesostructured Zirconia: Tween Surfactant and Controlled Template Removal

Young-Woong Suh; Hyun-Ku Rhee

Korean Journal of Chemical Engineering, Vol.20, No.1, 65-70, January, 2003

DOI10.1007/BF02697186 Export Citation

Synthesis of Stable Mesostructured Zirconia: Tween Surfactant and Controlled Template Removal

Young-Woong Suh , and Hyun-Ku Rhee^†

School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Kwanak-ku, Seoul 151-742, Korea

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Mesostructured zirconia has been synthesized by using zirconium chloride and PEO nonionic ethoxylated sorbitan ester (Tween-20, -40, -60 or -80) as a zirconium source and structure-directing agent in an aqueous medium. To remove the occluded surfactants, UV/ozone treatment has been utilized instead of calcination due to thermal instability. This results from a special molecular structure of Tween surfactant. From XRD, SEM and TEM analyses, the materials treated with UV light and in-situ generated ozone has a wormhole structure and ill-defined or well-defined spherical particles.

Keywords:Zirconia;Surfactant;Tween;Mesostructured;UV/Ozone;Wormhole

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[2] Antonelli DM, Ying JY, Angew. Chem.-Int. Edit., 35, 426 (1996)

[3] Antonelli DM, Ying JY, Chem. Mater., 8, 874 (1996)

[4] Bagshaw SA, Prouzet E, Pinnavaia TJ, Science, 269(5228), 1242 (1995)

[5] Bagshaw SA, Pinnavaia TJ, Angew. Chem.-Int. Edit., 35, 1102 (1996)

[6] Beck JS, Vartuli JC, Kennedy GJ, Kresge CT, Roth WJ, Schramm SE, Chem. Mater., 6, 1816 (1994)

[7] Ciesla U, Froba M, Stucky G, Schuth F, Chem. Mater., 11, 227 (1999)

[8] Clark T, Ruiz JD, Fan H, Brinker CJ, Chem. Mater., 12, 3879 (2000)

[9] Huang YY, Mccarthy TJ, Sachtler WM, Appl. Catal. A: Gen., 148(1), 135 (1996)

[10] Inagaki S, Fukushima Y, Kuroda K, J. Chem. Soc.-Chem. Commun., 680 (1993)

[11] Keene MTJ, Denoyel R, Llewellyn PL, Chem. Commun., 2203 (1998)

[12] Kim Y, Lee B, Yi J, Korean J. Chem. Eng., 19(5), 908 (2002)

[13] Knowles JA, Hudson MJ, J. Chem. Soc.-Chem. Commun., 2083 (1995)

[14] Kresge CT, Leonowicz ME, Roth WJ, Vartuli JC, Beck JS, Nature, 359, 710 (1992)

[15] Liu P, Liu J, Sayari A, Chem. Commun., 577 (1997)

[16] Livage J, Henr M, Sanchez C, Prog. Solid St. Chem., 18, 259 (1988)

[17] Nishikido N, Langmuir, 6, 1225 (1990)

[18] Pacheco G, Zhao E, Carcia A, Sklyarov A, Fripat JJ, Chem. Commun., 491 (1997)

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[20] Reddy JS, Sayari A, Catal. Lett., 38(3-4), 219 (1996)

[21] Sohn JR, Kim NW, Kim JT, Korean J. Chem. Eng., 4(1), 1 (1987)

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[24] Wong MS, Ying JY, Chem. Mater., 10, 2067 (1998)

[25] Yamaguchi T, Catal. Today, 20, 199 (1994)

[26] Yang PD, Zhao DY, Margolese DI, Chmelka BF, Stucky GD, Nature, 396(6707), 152 (1998)

[27] Yang P, Zhao D, Margolese DI, Chmelka BF, Stucky GD, Chem. Mater., 11, 2813 (1999)