摘要: The adsorption data of Gorbach et al. (Adsorption 10(1): 29–46, 2004) and Morris (J. Colloid Interface Sci. 28: 149–155, 1968) for the water on 4A zeolite pellets is re-analyzed. Model isotherms are derived considering a two site hypothesis, one α cage β cage. Four simple model fitted to data. Both dual Toth or Langmuir isotherm fit adequately. optimized standard enthalpy entropy parameters from surprising 1/3rd that observed calorimetrically, positive, physical impossibility. Substituting calorimetric corrected differential sorption values resulting in varying significantly with temperature. This variation postulated be due either hydration formation, clathrate formation clusters such as dimers, trimers, etc.
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sci-hub.se 参考文章(14)
Donald W Breck, Zeolite molecular sieves Krieger. ,(1984)
Duong D. Do, Adsorption Analysis: Equilibria and Kinetics ,(1998)
Alan L. Myers, Diego P. Valenzuela, Adsorption equilibrium data handbook ,(1989)
Douglas M. Ruthven, Principles of Adsorption and Adsorption Processes ,(1984)
A. Gorbach, M. Stegmaier, G. Eigenberger, Measurement and Modeling of Water Vapor Adsorption on Zeolite 4A—Equilibria and Kinetics Adsorption-journal of The International Adsorption Society. ,vol. 10, pp. 29- 46 ,(2004) , 10.1023/B:ADSO.0000024033.60103.FF
NEGUIB M. HASSAN, TUSHAR K. GHOSH, ANTHONY L. HINES, SUDARSHAN K. LOYALKA, ADSORPTION OF WATER VAPOR ON MOLECULAR SIEVE 13X Chemical Engineering Communications. ,vol. 105, pp. 241- 253 ,(1991) , 10.1080/00986449108911529
J.W. Carter, H. Husain, The simultaneous adsorption of carbon dioxide and water vapour by fixed beds of molecular sieves Chemical Engineering Science. ,vol. 29, pp. 267- 273 ,(1974) , 10.1016/0009-2509(74)85052-9
Masao Hino, Infrared Studies on Water Adsorption Systems with the Use of HDO. I. Molecular Sieves 13X and 4A Bulletin of the Chemical Society of Japan. ,vol. 50, pp. 574- 579 ,(1977) , 10.1246/BCSJ.50.574
Alan L. Myers, Characterization of nanopores by standard enthalpy and entropy of adsorption of probe molecules Colloids and Surfaces A: Physicochemical and Engineering Aspects. ,vol. 241, pp. 9- 14 ,(2004) , 10.1016/J.COLSURFA.2004.04.004
M. M. Dubinin, A. A. Isirikyan, G. U. Rakhmatkariev, V. V. Serpinskii, Energy of adsorption of gases and vapors on microporous adsorbents Russian Chemical Bulletin. ,vol. 21, pp. 1227- 1232 ,(1972) , 10.1007/BF00854532