Error Analysis in Assessment of Single-Component Permeability and Ideal Separation Selectivity of Low-Permeability Membrane Materials

Authors

  • O. Prokopová J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague
  • B. Bernauer Department of Inorganic Technology, Institute of Chemical Technology, Prague
  • V. Fíla Department of Inorganic Technology, Institute of Chemical Technology, Prague
  • P. Čapek Department of Inorganic Technology, Institute of Chemical Technology, Prague
  • P. Sysel Department of Inorganic Technology, Institute of Chemical Technology, Prague
  • P. Hrabánek J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague
  • A. Zikánová J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague
  • L. Brabec J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague
  • M. Kočiřík J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague

Keywords:

permeability, composite membranes, constant volume method, permeability determination uncertainty

Abstract

Composite membranes containing molecular sieve particles embedded in a polyimide matrix are promising due to their increased permeability and high selectivity in gas separation processes. Determination of permeability of dense membranes is time-consuming and the resulting values are loaded with experimental errors. The impact of uncertainty in various quantities on the reliability of the permeability values measured by the constant volume/variable pressure method was analyzed. The total uncertainty of the measurements on polyimide/Silicalite-1 membranes is 7–13 %, the errors in membrane thickness and permeation coefficient being the main contributing factors.

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Published

2013-03-15

How to Cite

Prokopová, O., Bernauer, B., Fíla, V., Čapek, P., Sysel, P., Hrabánek, P., Zikánová, A., Brabec, L., & Kočiřík, M. (2013). Error Analysis in Assessment of Single-Component Permeability and Ideal Separation Selectivity of Low-Permeability Membrane Materials. Chemické Listy, 107(3), 214–218. Retrieved from http://blog.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/743

Issue

Vol. 107 No. 3 (2013)

Section

Articles

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