Silica-Pillared H-magadiites: Interlamellar Bass-Catalyzed Hydrolysis of Tetraethylorthosilicate in Pure Water Suspension

Oh-Yun Kwon; Kyeong-Won Park; U-Hyon Paek

Journal of Industrial and Engineering Chemistry, Vol.5, No.2, 93-99, June, 1999

Oh-Yun Kwon^†, Kyeong-Won Park¹, and U-Hyon Paek

Department of Chemical Engineering, Yosu University, Yosu, Jeon-Nam 550-749, Korea
¹Department of Chemistry, Kyeongsang National University, Kyeong-Nam 660-701, Korea

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The silica-pillared H⁺-magadiites were prepared by interlamellar base-catalyzed hydrolysis of tetraethylorthosilicate [TEOS, Si(OC₂H₅)₄] intercalated into the interlayers of H⁺ -magadiite. The interlamellar hydrolysis of TEOS were conducted between 10 min to 40 min in 0.00%, 0.05%, 0.10% and 0.20% NH₃-water solution, affording siloxane-pillared H⁺ -magadiites with gallery height of 24.8∼30.3Å. Calcination of samples at 538 ℃ in air resulted in silica-pillared H⁺ -magadiites with a large specific surface areas between 551 and 1020 m²/g, depending on the aging time and NH₃ concentration. The reaction in pure water and 0.05% NH₃ solution afforded optimum specific surface areas and mesopores with narrow pore size distribution. The reaction in 0.10% and 0.20% NH₃ solution resulted in sharp decrease of specific surface areas and poorly-ordered basal spacings, implying the partial destruction in the layered structure of H⁺ -magadiite.

Keywords:magadiite;intercalation;interlamellar hydrolysis;silica-pillared H⁺ -magadiite

[References]

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[Referenced By]

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[1] Berk KH, Schweger W, Porsch M, Chem. Tech., 39, 508 (1987)

[2] Landis ME, Aufdembrink AB, Chu P, Johnson ID, Kirker GW, Rubin MK, J. Am. Chem. Soc., 133, 318 (1991)

[3] Daily JS, Pinnavaia T, Chem. Mater., 4, 855 (1992)

[4] Sprung R, Davis ME, Kauffman JS, Dybowski CI, Ind. Eng. Chem. Res., 29, 213 (1990)

[5] Yanagisawa T, Shimizu T, Kazayuki K, Kato C, Bull. Chem. Soc. Jpn., 63, 988 (1990)

[6] Yanagisawa T, Shimizu T, Kazayuki K, Kato C, Bull. Chem. Soc. Jpn., 61, 3743 (1989)

[7] Tindwa RM, Ellis DK, Peng GZ, Clearfield AJ, J. Chem. Soc.-Faraday Trans., 81, 545 (1985)

[8] Rituz-Hitzky E, Rojo JM, Nature, 287, 28 (1980)

[9] Jeong SY, Kwon OY, Suh JK, Jin HK, Lee JM, J. Colloid Interface Sci., 175(1), 253 (1995)

[10] Kwon OY, Jeong SY, Suh JK, Ryu BH, Lee JM, J. Colloid Interface Sci., 177(2), 677 (1996)

[11] Jeong SY, Suh JK, Jin H, Lee JM, Kwon OY, J. Colloid Interface Sci., 180(1), 269 (1996)

[12] Brinker CL, Scherer GW, Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing, (Academic Press, London), p. 97 (1990)

[13] Galarneau A, Barodawalla A, Pinnavaia TJ, Nature, 374(6522), 529 (1995)

[14] Fletcher RA, Bibby DM, Clays Clay Miner., 35, 318 (1987)

[15] Beneke K, Lagaly G, Am. Miner., 63, 818 (1983)

[16] Horvath G, Kawazoe K, J. Chem. Eng. Jpn., 16, 470 (1983)

[17] Lagaly G, Beneke K, Weiss A, Am. Miner., 53, 2061 (1968)

[18] Grace JM, Rocke SC, Crowder CE, Hasha DL, Clays Clay Miner., 26, 409 (1988)

[19] McAtee JL, House R, Eugster HP, Am. Miner., 53, 2061 (1968)

[20] Lagaly G, Beneke K, Am. Miner., 60, 642 (1975)

[21] Aelion R, Loebel A, Eirich F, J. Am. Chem. Soc., 72, 5705 (1950)

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

[23] Beck JS, Varturi JC, Roth WJ, Leonowicz ME, Kresge CT, Schmitt KD, Chu CT, Olson DH, Sheppard EW, McCullen SB, Higgins JB, Schlenker JL, J. Am. Chem. Soc., 114, 10834 (1992)

[24] Tanev PT, Chibwe M, Pinnavaia TJ, Nature, 368(6469), 321 (1994)

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

[26] Petrovic I, Novrotsky A, Chen CY, Davis ME, Stud. Surf. Sci. Catal., 84, 677 (1994)