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103 results on '"Kočiřík, Milan"'

19. Mass transport in the hierarchical porous structure of zeolite-based composite membranes

Author

Academy of Sciences of the Czech Republic, Institute of Chemical Technology, Universität Leipzig, Zikánová, Arlette, Hrabánek, Pavel, Kočiřík, Milan, Brabec, Libor, Juristová, Klára, Čapek, Pavel, Bernauer, Bohumil, Hejtmánek, Vladimír, Šolcová, Olga, Uchytil, Petr, Academy of Sciences of the Czech Republic, Institute of Chemical Technology, Universität Leipzig, Zikánová, Arlette, Hrabánek, Pavel, Kočiřík, Milan, Brabec, Libor, Juristová, Klára, Čapek, Pavel, Bernauer, Bohumil, Hejtmánek, Vladimír, Šolcová, Olga, and Uchytil, Petr

Published
2016

20. Investigations of molecular diffusion in FCC catalysts

Author

Universität Leipzig, Cepsa Research Center, Picos de Europa, SINTEF Materials and Chemistry, National Technical University of Athens, Grace GmbH & Co. KG, Institute of Chemical Technology, J. Heyrovský Institute of Physical Chemistry, Universität Stuttgart, University of Oslo, Kortunov, Pavel, Vasenkov, Sergey, Kärger, Jörg, Fé Elía, M., Perez, M., Stöcker, Michael, Papadopoulos, George K., Theodoroud, Doros, Drescher, B., McElhiney, Gordon, Bernauer, Bohumil, Krystl, V., Zikánová, Arlette, Jirglová, Hana, Berger, C., Gläser, Roger, Weitkamp, Jens, Hansen, Eddy Walther, Kočiřík, Milan, Universität Leipzig, Cepsa Research Center, Picos de Europa, SINTEF Materials and Chemistry, National Technical University of Athens, Grace GmbH & Co. KG, Institute of Chemical Technology, J. Heyrovský Institute of Physical Chemistry, Universität Stuttgart, University of Oslo, Kortunov, Pavel, Vasenkov, Sergey, Kärger, Jörg, Fé Elía, M., Perez, M., Stöcker, Michael, Papadopoulos, George K., Theodoroud, Doros, Drescher, B., McElhiney, Gordon, Bernauer, Bohumil, Krystl, V., Zikánová, Arlette, Jirglová, Hana, Berger, C., Gläser, Roger, Weitkamp, Jens, Hansen, Eddy Walther, and Kočiřík, Milan

Published
2016

22. Helium permeation through mixed matrix membranes based on polyimides and silicalite-1

Author

J. Heyrovský Institute of Physical Chemistry of ASCR, 2Institute of Chemical Technology, Technická 3, Institute of Chemical Process Fundamentals of ASCR, Universität Leipzig, Fryčová, Marie, Sysel, Petr, Hrabánek, Pavel, Kočiřík, Milan, Brabec, Libor, Zikánová, Arlette, Bernauer, Bohumil, Pavel Čapek, Pavel, Hejtmánek, Vladimír, J. Heyrovský Institute of Physical Chemistry of ASCR, 2Institute of Chemical Technology, Technická 3, Institute of Chemical Process Fundamentals of ASCR, Universität Leipzig, Fryčová, Marie, Sysel, Petr, Hrabánek, Pavel, Kočiřík, Milan, Brabec, Libor, Zikánová, Arlette, Bernauer, Bohumil, Pavel Čapek, Pavel, and Hejtmánek, Vladimír

Abstract

Mixed matrix membranes based on modified polyimides and silicalite-1 were prepared and studied. The novel preparation approach consists in improvement of the interfacial adhesion by employment of the coupling agent 3-aminopropyltriethoxysilane in such a way which leads to forming of chemical bonds between polyimide and silicalite-1. Firstly polyimide chains were endcapped by this agent which subsequently enabled their reaction with groups naturally present on silicalite-1 surface. Membranes with silicalite-1 content up to 60 wt. % were prepared and characterized by SEM, light microscopy and permeation of gases, prevailingly of He. The accessibility of sililicalite-1 pores prior to embedding and after embedding into polymeric matrices was studied by an iodine indicator technique. The permeability of membranes for gases was measured using a semi-open permeation apparatus with a small volume. Helium permeability depended on filler content and increased monotonously with the increasing content of filler. There were, however, significant deviations of the permeability dependences on filler content from shapes predicted by Bruggeman’s model. The qualitative explanation of the data disagreement with the model was proposed based on a stratification of mixed matrix membranes found by SEM.

Published
2015

23. Simulation of N 2/CH 4 counter-diffusion in composite membranes of the type silicalite-1- alpha-alumina: Simulation of N 2/CH 4 counter-diffusion in composite membranes ofthe type silicalite-1- alpha-alumina

Author

Institute of Chemical Technology, J. Heyrovský Institute of Physical Chemistry of ASCR, Universität Leipzig, Fila, Vlastimil, Kočiřík, Milan, Hrabánek, Pavel, Zikánová, Arlette, Brabec, Libor, Bernauer, Bohumil, Institute of Chemical Technology, J. Heyrovský Institute of Physical Chemistry of ASCR, Universität Leipzig, Fila, Vlastimil, Kočiřík, Milan, Hrabánek, Pavel, Zikánová, Arlette, Brabec, Libor, and Bernauer, Bohumil

Published
2015

24. 3D stochastic replicas of porous solids: a way to improve predicted diffusivity

Author

Institute of Chemical Technology, Prague, Institute of Chemical Process Fundamentals of ASCR, J. Heyrovský Institute of Physical Chemistry of ASCR, Universität Leipzig, Čapek, Pavel, Hejtmánek, Vladimír, Brabec, Libor, Zikánová, Arlette, Kočiřík, Milan, Bernauer, Bohumil, Institute of Chemical Technology, Prague, Institute of Chemical Process Fundamentals of ASCR, J. Heyrovský Institute of Physical Chemistry of ASCR, Universität Leipzig, Čapek, Pavel, Hejtmánek, Vladimír, Brabec, Libor, Zikánová, Arlette, Kočiřík, Milan, and Bernauer, Bohumil

Published
2015

26. Helium permeation through mixed matrix membranes based on polyimides and silicalite-1

Author

1J. Heyrovský Institute of Physical Chemistry of ASCR, Institute of Chemical Technology, Technická, 3Institute of Chemical Process Fundamentals of ASCR, Universität Leipzig, Fryčová, Marie, Sysel, Petr, Hrabánek, Pavel, Kočiřík, Milan, Brabec, Libor, Zikánová, Arlette, Bernauer, Bohumil, Čapek, Pavel, Hejtmánek, Vladimír, 1J. Heyrovský Institute of Physical Chemistry of ASCR, Institute of Chemical Technology, Technická, 3Institute of Chemical Process Fundamentals of ASCR, Universität Leipzig, Fryčová, Marie, Sysel, Petr, Hrabánek, Pavel, Kočiřík, Milan, Brabec, Libor, Zikánová, Arlette, Bernauer, Bohumil, Čapek, Pavel, and Hejtmánek, Vladimír

Published
2015

27. 3D stochastic replicas of porous solids: a way to improve predicted diffusivity

Author

Institute of Chemical Process Fundamentals of ASCR, Institute of Chemical Technology, J. Heyrovský Institute of Physical Chemistry of ASCR, Universität Leipzig, Hejtmánek, Vladimír, Čapek, Pavel, Brabec, Libor, Zikánová, Arlette, Kočiřík, Milan, Bernauer, Bohumil, Institute of Chemical Process Fundamentals of ASCR, Institute of Chemical Technology, J. Heyrovský Institute of Physical Chemistry of ASCR, Universität Leipzig, Hejtmánek, Vladimír, Čapek, Pavel, Brabec, Libor, Zikánová, Arlette, Kočiřík, Milan, and Bernauer, Bohumil

Abstract

The goal of our contribution was to develop a method providing morphological (microstructural) descriptors whose values would match total porosity and specific surface obtained other independent methods. The model obtained from limited amount of statistical information, accessible by image analysis of cross-sections, offers an attractive way for the prediction of equilibrium and transport phenomena in natural and man-made macroporous media.

Published
2015

28. PFG NMR study of liquid n-hexane self-diffusion in the bed of porous glass beads

Author

Charles University in Prague, 2J. Heyrovský Institute of Physical Chemistry of ASCR, Universität Leipzig, Peksa, Mikuláš, Lang, Jan, Kočiřík, Milan, Charles University in Prague, 2J. Heyrovský Institute of Physical Chemistry of ASCR, Universität Leipzig, Peksa, Mikuláš, Lang, Jan, and Kočiřík, Milan

Published
2015

29. Helium permeation through mixed matrix membranes based on polyimides and silicalite-1

Author

Fryčová, Marie, Sysel, Petr, Hrabánek, Pavel, Kočiřík, Milan, Brabec, Libor, Zikánová, Arlette, Bernauer, Bohumil, Pavel Čapek, Pavel, Hejtmánek, Vladimír, 1J. Heyrovský Institute of Physical Chemistry of ASCR, Institute of Chemical Technology, Technická, 3Institute of Chemical Process Fundamentals of ASCR, Universität Leipzig, J. Heyrovský Institute of Physical Chemistry of ASCR, 2Institute of Chemical Technology, Technická 3, and Institute of Chemical Process Fundamentals of ASCR

Subjects
diffuision, transport, ddc:530, Diffusion, Transport
Abstract

Mixed matrix membranes based on modified polyimides and silicalite-1 were prepared and studied. The novel preparation approach consists in improvement of the interfacial adhesion by employment of the coupling agent 3-aminopropyltriethoxysilane in such a way which leads to forming of chemical bonds between polyimide and silicalite-1. Firstly polyimide chains were endcapped by this agent which subsequently enabled their reaction with groups naturally present on silicalite-1 surface. Membranes with silicalite-1 content up to 60 wt. % were prepared and characterized by SEM, light microscopy and permeation of gases, prevailingly of He. The accessibility of sililicalite-1 pores prior to embedding and after embedding into polymeric matrices was studied by an iodine indicator technique. The permeability of membranes for gases was measured using a semi-open permeation apparatus with a small volume. Helium permeability depended on filler content and increased monotonously with the increasing content of filler. There were, however, significant deviations of the permeability dependences on filler content from shapes predicted by Bruggeman’s model. The qualitative explanation of the data disagreement with the model was proposed based on a stratification of mixed matrix membranes found by SEM.

Published
2009

31. 3D stochastic replicas of porous solids: a way to improve predicted diffusivity

Author

Hejtmánek, Vladimír, Čapek, Pavel, Brabec, Libor, Zikánová, Arlette, Kočiřík, Milan, Bernauer, Bohumil, Institute of Chemical Technology, Prague, Institute of Chemical Process Fundamentals of ASCR, J. Heyrovský Institute of Physical Chemistry of ASCR, Universität Leipzig, and Institute of Chemical Technology

Subjects
diffusion, transport, ddc:530
Abstract

The goal of our contribution was to develop a method providing morphological (microstructural) descriptors whose values would match total porosity and specific surface obtained other independent methods. The model obtained from limited amount of statistical information, accessible by image analysis of cross-sections, offers an attractive way for the prediction of equilibrium and transport phenomena in natural and man-made macroporous media.

Published
2009

34. Investigations of molecular diffusion in FCC catalysts

Author

Kortunov, Pavel, Vasenkov, Sergey, Kärger, Jörg, Fé Elía, M., Perez, M., Stöcker, Michael, Papadopoulos, George K., Theodoroud, Doros, Drescher, B., McElhiney, Gordon, Bernauer, Bohumil, Krystl, V., Zikánová, Arlette, Jirglová, Hana, Berger, C., Gläser, Roger, Weitkamp, Jens, Hansen, Eddy Walther, Kočiřík, Milan, Universität Leipzig, Cepsa Research Center, Picos de Europa, SINTEF Materials and Chemistry, National Technical University of Athens, Grace GmbH & Co. KG, Institute of Chemical Technology, J. Heyrovský Institute of Physical Chemistry, Universität Stuttgart, and University of Oslo

Subjects
diffusion, transport, ddc:530
Published
2005

40. Adsorption Properties of ZSM-5 Zeolites

Author

Hudec, Pavol, primary, Smiešková, Agáta, additional, Židek, Zdenek, additional, Zúbek, Milan, additional, Schneider, Petr, additional, Kočiřík, Milan, additional, and Kozánková, Jana, additional

Published
1998
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