An up-to-date automated instrument for the characterization of microporous/mesoporous solid

Akporiaye, Duncan; Plassen, Martin
May 1997
Review of Scientific Instruments;May97, Vol. 68 Issue 5, p2111
Academic Journal
Presents a high vacuum gravimetric system for measuring adsorption and desorption processes. Description of the system; Measurement of adsorption/desorption isotherms of cyclopentane; Generation of infrared spectra of the adsorbed surfaces species under the same pressure and temperature conditions.


Related Articles

  • Some intriguing items in the history of volumetric and gravimetric adsorption measurements. Kiefer, Susanne; Robens, E. // Journal of Thermal Analysis & Calorimetry;Dec2008, Vol. 94 Issue 3, p613 

    The short survey concerns the discovery of adsorbents and the measurement of the adsorptivity. In the investigation of adsorption very sensitive instruments are needed, developed only recently. Two methods, however, are very old: the volumetric and the gravimetric measurement of the adsorbed...

  • Deduction of channel-length distribution from isothermal thermogravimetry. Saito, Kazuya; Yamamura, Yasuhisa // Journal of Thermal Analysis & Calorimetry;May2008, Vol. 92 Issue 2, p391 

    A possible deduction is proposed of channel length distribution in one-dimensional porous materials from the kinetic data obtained in isothermal thermogravimetry (TG). The method utilizes the absorption/desorption of small molecules into one-dimensional nano-channel. In the surface-controlled...

  • The jäntti approach using a two-layer model. Poulis, J. A.; Massen, C. H.; Robens, E. // Journal of Thermal Analysis & Calorimetry;2003, Vol. 71 Issue 1, p61 

    Jäntti introduced a method to calculate the adsorption equilibrium by the measurement of the actual adsorbed amount at three times after a change of the gas pressure. He applied that method for gas/solid systems in which simple adsorption processes occur and for an infinite number of...

  • Comparison of the Sorption of Trifluoromethane (R-23) on Zeolites and in an Ionic Liquid. Shiflett, Mark B.; Corbin, David R.; Yokozeki, A. // Adsorption Science & Technology;2013, Vol. 31 Issue 1, p59 

    In this study, trifluoromethane (R-23) has been adsorbed on three zeolites, namely 5A, LSX and 13X, and their adsorption isotherms have been measured at approximately 298 and 323 K using a gravimetric microbalance. All cases belong to the adsorption Type II (one of the six IUPAC...

  • MOISTURE ADSORPTION ISOTHERMS OF Lavandula officinalis L. FLOWERS AT THREE TEMPERATURES. Chenarbon, Hossein Ahmadi; Hasheminia, Seyedeh Masoomeh; Movahed, Sara // Journal of Agricultural & Biological Science;Dec2011, Vol. 6 Issue 12, p22 

    Lavander has been used as a medicinal plant and to treat several diseases. Knowledge of moisture adsorption isotherms is useful in storage condition. The equilibrium moisture content for Lavandula officinalis L. flowers were measured by using the gravimetric static method with water activity...

  • Application of Jäntti’s method for the explanation of adsorption onto rough surfaces. Poulis, J. A.; Robens, E.; Massen, C. H.; Barczak, M. // Journal of Thermal Analysis & Calorimetry;Oct2006, Vol. 86 Issue 1, p39 

    Jäntti introduced a method to calculate the final value of the adsorbed mass already in a very early stage of adsorption measurements. His method was restricted to gravimetric measurements and to adsorptions, which satisfy the simplest molecular model. One of the advantages of his method was...

  • Modeling the Effect of Glucose Syrup on the Moisture Sorption Isotherm of Figs. Ansari, Sara; Farahnaky, Asgar; Majzoobi, Mahsa; Badii, Fojan // Food Biophysics;Sep2011, Vol. 6 Issue 3, p377 

    Moisture sorption isotherms of figs with and without glucose syrup (at 20% and 40%, w/ w) were determined at 5 °C, 25 °C, and 40 °C. A static gravimetric method was used under 0.11-0.84 water activity ranges for the determination of sorption isotherms that were found to be typical type...

  • Investigation of surface properties of lunar regolith part III. Robens, E.; Bischoff, A.; Schreiber, A.; Unger, K. K. // Journal of Thermal Analysis & Calorimetry;Dec2008, Vol. 94 Issue 3, p627 

    Recently we published results of investigations of the surface properties of three lunar soil samples from the Apollo 11, 12 and 16 missions. In the present paper we summarise and supplement the results of measurements of density using a helium pycnometer, krypton and nitrogen adsorption using...

  • Inhibition by Newbouldia leavis Leaf Extract of the Corrosion of Aluminium in HCl and H2SO4 Solutions. Nnanna, L. A.; Obasi, V. U.; Nwadiuko, O. C.; Mejeh, K. I.; Ekekwe, N. D.; Udensi, S. C. // Archives of Applied Science Research;2012, Vol. 4 Issue 1, p207 

    The inhibition effect of Newbouldia leavis leaves extract on the corrosion of aluminium in 0.2- 1.0 M HCl and 0.1-1.0 M H2SO4 solutions was investigated by the gravimetric technique. The results show that Newbouldia leavis is a good inhibitor, and exhibits more efficient in 1.0 M HCl than 0.5 M...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics