Abstract
Desorption processes of low-molecular-weight compounds from the surface of smectites into the gas phase determine a number of processes, e.g. those involved in drug delivery and the release of herbicides. The desorption has not been investigated thoroughly and is not well understood. The present study was undertaken in order to understand better the factors influencing these desorption mechanisms. Starting with a very pure standard (Na+-rich) montmorillonite (Kunipia-F), which was exchanged against cations with different hydration properties (Ca2+, Li+, phenyltrimethylammonium, hexyltrimethyl-ammonium), the experiments explored the rate of desorption of volatiles with different chemical functionalities (water, ethanol, ethyl acetate, and toluene). The desorption was monitored by thermogravimetry and differential scanning calorimetry under isothermal conditions, and by ramping the temperature at a constant rate. The experiments were compared with numerical calculations based on finite-element methods and with analytical models. These data point to a two-step mechanism where the desorption follows the curve of the equilibrium desorption isotherms of those molecules on the montmorillonite. The bulk-like volatiles (i.e. volatiles with release kinetics close to that of the bulk liquids) were desorbed in a first step. With a decrease in the degree of coverage of the volatile on the montmorillonite, the desorption was increasingly dominated by the strength of interaction between the volatile and the interlayer cations of the montmorillonite.
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Altshuller, A.P. and Cohen, I.R. (1960) Application of diffusion cells to the production of known concentrations of gaseous hydrocarbons. Analytical Chemistry, 32, 802–810
Ambrose, D. and Sprake, C.H.S. (1970) Thermodynamic properties of organic oxygen compounds. XXV. Vapor pressures and normal boiling temperatures of aliphatic alcohols. Journal of Chemical Thermodynamics, 2, 631–645
Arnikar, H.J., Rao, T.S., and Karmarkar, K.H. (1967) Electrodeless discharge as detector in gas chromatography III. Study of inter-diffusion of gases. International Journal of Electronics, 22, 381–385.
Arocha, M.A., Jackman, A.P., and McCoy, B.J. (1996) Adsorption kinetics of toluene on soil agglomerates: Soil as a biporous sorbent. Environmental Science & Technology, 30, 1500–1507.
Bérend, I., Cases, J.M., François, M., Uriot, J.P., Michot, L., Masion, A., and Thomas, F. (1995) Mechanism of adsorption and desorption of water vapor by homoionic montmorillonites: 2. The Li+, Na+, K+, Rb+, and Cs+-exchanged forms. Clays and Clay Minerals, 43, 324–336.
Besley, L.M. and Bottomley, G.A. (1974) Vapour pressure of toluene from 273.15 to 298.15 K. Journal of Chemical Thermodynamics, 6, 577–580.
Bharadwaj, R.K. (2001) Modeling the barrier properties of polymer-layered silicate nanocomposites. Macromolecules, 34, 9189–9192.
Boek, E.S., Coveney, P.V., and Skipper, N.T. (1995) Monte Carlo molecular modeling studies of hydrated Li-, Na-, and K-smectites: Understanding the role of potassium as a clay swelling inhibitor. Journal of the American Chemical Society, 117, 12608–12607.
Bourg, I.C., Sposito, G., and Bourg, A.CM. (2006) Tracer diffusion in compacted, water-saturated bentonite. Clays and Clay Minerals, 54, 363–374.
Bray, H.J. and Redfern, S.A.T. (1999) Kinetics of dehydration of Ca-montmorillonite. Physics and Chemistry of Minerals, 26, 591–600.
Bridgeman, O.C. and Aldrich, E.W. (1964) Vapor pressure tables for water. Journal of Heat Transfer, 86, 279–286.
Cases, J.M., Bérend, I., François, M., Uriot, J.P., Michot, L.J., and Thomas, F. (1997) Mechanism of adsorption and desorption of water vapor by homoionic montmorillonite; 3. The Mg2+, Ca2+, and Ba3+ exchanged forms. Clays and Clay Minerals, 45, 8–22.
Cebula, D.J., Thomas, R.K., and White, J.W. (1981) Diffusion of water in Li-montmorillonite studied by quasielastic neutron scattering. Clays and Clay Minerals, 29, 241–248.
Chang, F.-R.C., Skipper, N.T., and Sposito, G. (1995) Computer simulation of interlayer molecular structure in sodium montmorillonite hydrates. Langmuir, 11, 2734–2741.
Chang, M.-L., Wu, S.-C., Chen P.-J., and Cheng, S.-C. (2003) Infrared investigation of the sequestration of toluene vapor on clay minerals. Environmental Toxicology and Chemistry, 22, 1956–1962.
Clausen, P., Andreoni, W., Curioni, A., and Hughes, E., (2009a) Adsorption of low-molecular-weight molecules on a dry clay surface: An ab initio study. Journal of Physical Chemistry C, 113, 12293–12300.
Clausen, P., Signorelli, M., Schreiber, A., Hughes, E., Plummer, J.G.P., Fessas, D., Schiraldi, A., and Månson, E.J.A. (2009b) Equilibrium desorption isotherms of water, ethanol, ethyl acetate, and toluene on a sodium smectite clay. Journal of Thermal Analysis and Calorimetry, 98, 833–841.
Clausen, P., Watzke, B., Hughes, E., Plummer, J.G.P., and Månson, E.J.A. (2011) Evaporation kinetics of volatile liquids and release kinetics of water from a smectite clay: Comparison between experiments and finite element calculations. International Journal of Engineering Science, 49, 1125–1140.
Crider, W.L. (1956) The use of diffusion coefficients in the measurement of vapour pressure. Journal of the American Chemical Society, 78, 924–925.
Duval, F.P., Porion, P., Faugere, A.-M., and Van Damme, H. (1999) Microscale and macroscale diffusion of water in colloidal gels. A pulsed field gradient and NMR imaging investigation. Journal of Physical Chemistry, 103, 5730–5735.
El-Nokaly, M.A., Piatt, D.M., and Charpentier, B.A. (1993) Polymeric Delivery Systems: Properties and Applications. ACS Symposium Series, American Chemical Society.
Fairbanks, D.F. and Wilke, C.R. (1950) Diffusion coefficients in multicomponent gas mixtures. Industrial and Engineering Chemistry, 42, 471–475.
Ferrage, E., Lanson, B., Sakharov, B.A., and Drits, V.A. (2005) Investigation of smectite hydration properties by modeling experimental X-ray diffraction patterns: Part I. Montmorillonite hydration properties. American Mineralogist, 90, 1358–1374.
Frezzotti, A., Gibelli, L., and Lorenzani, S. (2005) Mean field kinetic theory description of evaporation of a fluid into vacuum. Physics of Fluids, 17, 012102, (doi: 10.1063/1.1824111).
Fujii, N., Ichikawa, Y., Katsuyuki, K., Suzuki, S., and Kitayama, K. (2003) Micro-structure of bentonite clay and diffusion coefficient given by multiscale homogeneization analysis. Materials Science Research International, 9, 117–124
Gilliland, E.R. (1934) Diffusion coefficients in gaseous systems. Industrial and Engineering Chemistry, 26, 681–685
Girard, F., Antoni, M., Faure, S., and Steinchen, A. (2006) Evaporation and marangoni driven convection in small heated water droplets. Langmuir, 22, 11085–11091.
Grismer, M.E. (1987a) Kinetics of water vapor adsorption on soils. Soil Science, 143, 367–371.
Grismer, M.E. (1987b) Vapor adsorption kinetics and vapor diffusivity. Soil Science, 144, 1–5.
Hendricks, S.B., Nelson, R.A., and Alexandre, M. (1940) Hydration mechanism of the clay mineral montmorillonite saturated with various cations. Journal of the American Chemical Society, 62, 1457–1464.
Hensen, E.J.M. and Smit, B. (2002) Why clays swell. Journal of Physical Chemistry B, 106, 12664–12667.
Hippenmeyer, B. (1949) Die Diffusion von Wasserdampf in Wasserstoff, Stickstoff und deren Gemischen. Angewandte Physik, 1, 549–557.
Ibrahim, S.H. and Kuloor, N.R. (1961) Diffusion in binary gas system. British Chemical Engineering, 6, 862–863.
Keyes, B.R. and Silicox, G.D. (1994) Fundamental study of the thermal desorption of toluene from montmorillonite clay particles. Environmental Science & Technology, 28, 840–849.
Kraehenbuehl, F., Stoeckli, H.F., Brunner, F., Kahr, G., and Müller-Vonmoos, M. (1987) Study of the water-bentonite-system by vapour adsorption, immersion calorimetry and X-ray techniques, I. Micropore volumes and internal surface areas, following Dubinin’s theory. Clay Minerals, 22, 1–9.
Kretschmer, C.B. and Wiebe, R. (1949) Li quid-vapor equilibrium of ethanol-toluene solutions. Journal of the American Chemical Society, 71, 1793–1797.
Landau, L.D. and Lifschitz, E.M. (1987) Fluid Mechanics. 2nd edition, Pergamon Press, Oxford, UK.
Lugg, G.A. (1968) Diffusion coefficients of some organic and other vapors in air. Analytical Chemistry, 40, 1072–1077.
Lusti, H.R., Gusev, A.A., and Guseva, O. (2004) The influence of platelet disorientation on the barrier properties of composites: a numerical study. Modelling and Simulation in Materials Science and Engineering, 12, 1201–1207.
Malikova, N., Cadene, A., and Marry, V. (2006) Diffusion of water in clays on the microscopic scale: modeling and experiment. Journal of Physical Chemistry B, 110, 3206–3214.
Marry, V., Malikova, N., Cadène, A., Dubois, E., Durand-Vidal, A., Turq, P., Breu, J., Longeville, S., and Zanotti, J.-M. (2008) Water diffusion in a synthetic hectorite by neutron scattering—beyond the isotropic translation model. Journal of Physics: Condensed Matter, 20, 104205–104215.
Mato, F. and Cimavilla, J.M. (1983) Determinacion de coeficientes binarios de difusion en fase gaseosa mediante el metodo experimental de Stefan. Anales De Quimica, 79, 445–448.
Meier, L.P. and Kahr, G. (1999) Determination of the cation exchange capacity (CEC) of clay minerals using the complexes of copper(II) ions with triethylenetetramine and tetraethylenepentamine. Clays and Clay Minerals, 47, 386–388.
Michot, L.J., Bihannic, I., Pelletier, M., Rinnert, E., and Robert, J.-L. (2005) Hydration and swelling of synthetic Nasaponites: Influence of layer charge. American Mineralogist, 90, 166–172.
Morodome, S. and Kawamura, K. (2009) Swelling behavior of Na- and Ca-montmorillonite up to 150ºC by in situ X-ray diffraction experiments. Clays and Clay Minerals, 57, 150–160.
Morrissey, FA. and Grismer, M.E. (1999) Kinetics of volatile organic compound sorption/desorption on clay minerals. Journal of Contaminant Hydrology, 36, 291–312.
Nagata, I. and Hasegawa, T. (1970) Gaseous interdiffusion coefficients. Journal of Chemical Engineering of Japan, 3, 143–145.
Nakashima, Y. (2000a) Effects of clay fraction and temperature on the H2O self-diffusivity in hectorite gel: A pulsed-field-gradient spin-echo nuclear magnetic resonance study. Clays and Clay Minerals, 48, 603–609.
Nakashima, Y. (2000b) Pulsed field gradient proton NMR study of the self-diffusion of H2O in montmorillonite gel: effects of temperature and water fraction. American Mineralogist, 85, 132–138.
Nakashima, Y. (2002) Diffusion of H2O and I- in expandable mica and montmorillonite gels: contribution of bound H2O. Clays and Clay Minerals, 50, 1–10.
Nakashima, Y. (2003) Diffusion of H2O in smectite gels: obstruction effects of bound H2O layers. Clays and Clay Minerals, 51, 9–22.
Nakashima, Y. (2006) H2O self-diffusion coefficient of water rich MX-80 bentonite gels. Clay Minerals, 41, 659–668.
Navier, C.L.M.H. (1822) Mémoire sur les lois du mouvement des fluides. Mémoires de lAcadémie des Sciences de l’Institut de France, 6, 389–440.
Nelson, E.T. (1956) The measurement of vapour diffusivities in coal-gas and some common gases. Journal of Applied Chemistry, 6, 286–292.
Norrish, K. (1954) The swelling of montmorillonite. Discussions of the Faraday Society, 18, 120–134.
O’Connell, J.P., Gillespie, M.D., Krostek, W.D., and Prausnitz, J.M. (1969) Diffusivities of water in nonpolar gases. Journal of Chemical Physics, 73, 2000–2004.
Ochs, M., Lothenbach, B., Shibata, M., and Mikazu, Y. (2004) Thermodynamic modeling and sensitivity analysis of porewater chemistry in compacted bentonite. Physics and Chemistry of the Earth, 29, 129–136.
Poinsignon, J., Estrade-Szwarckopf, H., Conard, J., and Dianoux, A.J. (1989) Structure and dynamics of intercalated water in clay minerals. Physica B: Physics of Condensed Matter, 156-157, 140–144.
Polak, J. and Mertl, I. (1965) Saturated vapour pressure of methyl acetate, ethyl acetate, n-propyl acetate, methyl propionate, and ethyl propionate. Collection of Czechoslovak Chemical Communications, 30, 3526–3528.
Polubesova, T., Rytwo, G., Nir, S., Serban, C., and Margulies, L. (1997) Adsorption of benzyltrimethylammonium and benzyltriethylammonium on montmorillonite: Experimental studies and model calculations. Clays and Clay Minerals, 45, 834–841.
Sato, H. and Suzuki, S. (2003) Fundamental study on the effect of an orientation of clay particles on diffusion pathway in compacted bentonite. Applied Clay Science, 23, 51–60.
Schwertz, FA. and Brow, J.E. (1951) Diffusivity of water vapor in some common gases. Journal of Chemical Physics, 19, 640–646.
Salles, F., Beurroies, I., Bildstein, O., Jullien, M., Raynal, J., Denoyel, R., and Van Damme, H. (2008) A calorimetric study of mesoscopic swelling and hydration sequence in solid Na-montmorillonite. Applied Clay Science, 39, 186–201.
Shih, Y.-H. and Wu, S.-C. (2004) Kinetics of toluene sorption and desorption in Ca- and Cu-montmorillonites investigated with Fourier transform infrared spectroscopy under two different levels of humidity. Environmental Toxicology and Chemistry, 23, 2061–2067.
Siepmann, J., Ainaoui, A., Vergnaud, J.M., and Bodmeier, R. (1998) Calculation of the dimensions of drug-polymer devices based on diffusion parameters. Journal of Pharmaceutical Sciences, 87, 827–832.
Skipper, N.T., Lock, P.A., Titiloye, J.O., and Swenson, J. (2006) The structure and dynamics of 2-dimensional fluids in swelling clays. Chemical Geology, 230, 182–196.
Suzuki, A., Sato, H., Ishidera, T., and Fujii, N. (2004) Study on anisotropy of effective diffusion coefficient and activation energy for deuterated water in compacted sodium bentonite. Journal of Contaminant Hydrology, 68, 23–37.
Steinberg, S., Fairley, J.P., and Kreamer, D. (1994) Slow vapor-phase desorption of toluene from several ion-exchanged monmorillonites. Journal of Soil Contamination, 3, 249–264.
Swenson, J., Bergman, R., and Howells, W.S. (2000) Quasielastic neutron scattering of two-dimensional water in a vermiculite clay. Journal of Chemical Physics, 113, 2873–2879.
Tambach, T.J., Bohuis, P.G., Hensen, J.M., and Smit, B. (2006) Hysteresis in clay swelling induced by hydrogen bonding: accurate prediction of swelling states. Langmuir, 22, 1223–1234.
Tamura, K., Yamada, H., and Nakazawa, H. (2000) Stepwise hydration of high-quality synthetic smectite with various cations. Clays and Clay Minerals, 48, 400–404.
Tuck, J.J., Hall, P.L., Hayes, M.H.B., Ross, D.K., and Poinsignon, J. (1984) Quasi-elastic neutron-scattering studies of intercalated molecules in charged-deficient layer silicates: part 1. Journal of the Chemical Society Faraday Transaction 1: Physical Chemistry in Condensed Phases, 80, 309–324.
Tuck, J.J., Hall, P.L., and Hayes, M.H.B. (1985) Quasi-elastic neutron-scattering studies of intercalated molecules in charged-deficient layer silicates: Part 2. Journal of the Chemical Society Faraday Transactions 1: Physical Chemistry in Condensed Phases, 81, 833–846.
Veith, S.R., Hughes, E., and Pratsinis, S.E. (2004) Restricted diffusion and release of aroma molecules from sol-gel-made porous silica particles. Journal of Controlled Release, 99, 315–327.
Ward, C.A. and Fang, G. (1999) Expression for predicting liquid evaporation flux: statistical rate theory approach. Physical Review E, 59, 429–439.
Zabat, M. and Van Damme, H. (2000) Evaluation of the energy barrier for dehydration of momionic (Li, Na, Cs, Mg, Ca, Ba, Alx(OH)yz+ and La)-montmorillonite by a differentiation method. Clay Minerals, 35, 357–363.
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Clausen, P., Meier, L., Hughes, E. et al. Kinetics of Desorption of Water, Ethanol, Ethyl Acetate, and Toluene from a Montmorillonite. Clays Clay Miner. 61, 361–374 (2013). https://doi.org/10.1346/CCMN.2013.0610414
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DOI: https://doi.org/10.1346/CCMN.2013.0610414