Examination of the surface properties of kaolinites by inverse gas chromatography: Acid-base properties

Young Cheol Yang; Pyoung Ran Yoon

Korean Journal of Chemical Engineering, Vol.24, No.3, 451-456, May, 2007

DOI10.1007/s11814-007-0078-7 Export Citation

Examination of the surface properties of kaolinites by inverse gas chromatography: Acid-base properties

Young Cheol Yang^†, and Pyoung Ran Yoon

Department of Mineral Resources & Energy Eng., Chonbuk National Univ., Jeonju 561-756, Korea

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The specific component of the free energy of adsorption, .ΔG_A^SP, of untreated kaolinite and kaolinites surfacetreated with isopropyl triisostearoyl titanate (ITT) and isopropyl tri(dioctylpyrophosphato) titanate (ITDT) was estimated, using the adsorption of several polar and non-polar probes on these surfaces at various measuring temperatures, by the inverse gas chromatography (IGC) method. The acid-base properties of the untreated kaolinite and surface-treated kaolinites were quantified by KA and KD parameters, reflecting the ability of the surface to act as an electron acceptor and donor, respectively. In the result, all kaolinite surfaces were amphoteric and were able to function as both an electron acceptor and an electron donor.

Keywords:Inverse Gas Chromatography (IGC);Specific Component of the Free Energy of Adsorption (ΔG_A^SP);Enthalpy of Specific Adsorption (ΔH_A^SP);Surface Acid-base Characteristics

[References]

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Voekel A, Andrzejewska E, Maga R, Andrzejewski M, Polymer, 33, 3109 (1993)
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CRC Handbook of chemistry and physics, 69ed, CRC Press, Inc. (1989)
Hadjar H, Balard H, Papirer E, Colloids Surf. A: Physicochem. Eng. Asp., 99, 45 (1995)
Saada A, Papirer E, Balard H, Siffert B, J. Colloid Interface Sci., 175(1), 212 (1995)
Solomon DH, Hawthorne DG, Chemistry of pigments and fillers, John Wiley & Sons, New York, 32 (1983)

[1] Donnet JB, Park SJ, Balard M, Chromatographia, 31(9/10), 434 (1991)

[2] Nardin M, Balard H, Papirer E, Carbon, 28(1), 43 (1990)

[3] Gutman V, The donor-acceptor approach to molecular interactions, Plenum Press, New York, 1 (1978)

[4] Riddle FL, Fowkes FM, J. Am. Chem. Soc., 112(9), 3259 (1990)

[5] Balad H, Sidqi M, Papirer E, Donnet JB, Tuel A, Hommel H, Legrand AP, Chromatographia, 25(8), 712 (1988)

[6] Papier E, Balad H, Rahmani Y, Chromatographia, 23(9), 639 (1987)

[7] Papirer E, Perrin J, Siffert B, Philipponneau G, J. Colloid Interface Sci., 144(1), 263 (1991)

[8] Sidqi M, Balard H, Papirer E, Chromatographia, 27(7/8), 311 (1989)

[9] Sidqi M, Ligner G, Jagiello J, Balard H, Papirer E, Chromatographia, 28(11/12), 588 (1989)

[10] Chehimi MM, Pigois-Landureau E, J. Mater. Chem., 4(5), 741 (1994)

[11] Panzer U, Schreiber H, Macromolecules, 25, 3633 (1992)

[12] Mukhopadhyay P, Schreiber HP, Colloids Surf. A: Physicochem. Eng. Asp. 100, Elsevier, 47 (1995)

[13] Voekel A, Andrzejewska E, Maga R, Andrzejewski M, Polymer, 33, 3109 (1993)

[14] Voelkel A, Krysztafkiewicz A, Powder Technol., 95(2), 103 (1998)

[15] CRC Handbook of chemistry and physics, 69ed, CRC Press, Inc. (1989)

[16] Hadjar H, Balard H, Papirer E, Colloids Surf. A: Physicochem. Eng. Asp., 99, 45 (1995)

[17] Saada A, Papirer E, Balard H, Siffert B, J. Colloid Interface Sci., 175(1), 212 (1995)

[18] Solomon DH, Hawthorne DG, Chemistry of pigments and fillers, John Wiley & Sons, New York, 32 (1983)