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14 (0,046s)

Výsledek výzkumu

Polycrystalline silicalite-1 layers: texture and kinetics of growth

Self-supporting silicalite-1 layers were grown on mercury surface from clear solutions at temperatures 140-180oC. Synthesis time was varied. Kinetics of layer growth was measured and the corresponding apparent activation energy was estimated to 52kJ/...

CF - Fyzikální chemie a teoretická chemie

  • 2005
  • Jx
Výsledek výzkumu

Ceramic Porous Elements for Filtration of Gases and Related Applications

A technology was developed for preparation of low-cost ceramic filtration elements in the form of disks, 20 and 25 mm in diameter. The material of the elements is based on fused ?-alumina as well as ceramic and glaze binders. The lateral parts are he...

CI - Průmyslová chemie a chemické inženýrství

  • 2004
  • Jx
Výsledek výzkumu

Ceramic Porous Elements for Filtration of Gases and Related Applications

A technology was developed for preparation of low-cost ceramic filttration elements in the form of disks, 20 and 25 mm in diameter. The material of the elements is based on fused .alpha.-alumina as well as ceramic and glaze binders. The basic porous ...

CF - Fyzikální chemie a teoretická chemie

  • 2004
  • Jx
Výsledek výzkumu

Polycrystalline Wafers of Silicalite-1 etched by HF Acid and Viewed by SEM

HF etching of polycrystalline silicalite-1 wafers enables to visualize grain boundaries of non-calcined crystals by dissolution of a phase between individual crystals as well as to reveal resistant shells of calcined crystals by dissolution of a crys...

CF - Fyzikální chemie a teoretická chemie

  • 2004
  • Jx
Výsledek výzkumu

Preparation and characterization of inorganic support for microporous layer.

The presented studies is focused on the preparation of porous supports (ceramic, glass) and thin microporous layers (zeolite, Poly Aluminum chlorid (PAC), silicalite), which are suitable for application in the catalysis, membrane technology and biote...

CI - Průmyslová chemie a chemické inženýrství

  • 2003
  • D
Výsledek výzkumu

Comparison of various models for transport of binary mixtures through dense polymer membrane

The main aim of this work is the application of various models describing the transport of a penetrant during pervaporation process in the membrane and their comparison.We experimentally determined sorption isotherms of pure components, diffusion coe...

CF - Fyzikální chemie a teoretická chemie

  • 2003
  • Jx
Výsledek výzkumu

Description of binary liquid mixtures transport through non-porous membrane by modified Maxwell-Stefan equations

This paper deals with a description of transport parameters during pervaporation of binary liquid mixture through non-porous polymer membrane. The main task of this work is the application of the model that would be able to describe the transport of ...

CF - Fyzikální chemie a teoretická chemie

  • 2003
  • Jx
Výsledek výzkumu

Influence of Capillary Condensation Effects on Mass Transport through Porous Membranes.

The results indicate the occurrence of capillary condensation at a reduced pressure P/P0 of approximately 0.8 for all three gases. There is a good agreement between the volume of condensate at saturation and the pore volume determined in independent ...

CI - Průmyslová chemie a chemické inženýrství

  • 2003
  • Jx
Výsledek výzkumu

Dynamic Desorption of Adsorbing Species under Cross Membrane Pressure Difference: a New Defect Characterisation Approach in Zeolite Membranes.

Making zeolite membranes able to separate gas molecules has been a goal of many authors in the last two decades. Zeolite membranes usually have a polycrystalline structure. Permeating molecules can pass through both zeolite pores (intracrystalline pa...

CF - Fyzikální chemie a teoretická chemie

  • 2003
  • Jx
Výsledek výzkumu

Dynamics of sorption columns in dewatering of bioethanol using zeolites

Dynamics of water sorption in bed columns during dewatering of bioethanol using selected zeolites...

EI - Biotechnologie a bionika

  • 2002
  • Jx
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