Reaction Kinetic Study of Heterogeneous Hydrogenations for 3D-printed Catalysts.
Ujčić, Massimo
2017 - English The goals of this work are to study the kinetics and reaction mechanism, as well as the determination of the reaction kinetic parameters. In the current stage of the investigation different reaction conditions.\n Keywords: reaction kinetic; bath reactor; catalysts Available at various institutes of the ASCR Reaction Kinetic Study of Heterogeneous Hydrogenations for 3D-printed Catalysts.

The goals of this work are to study the kinetics and reaction mechanism, as well as the determination of the reaction kinetic parameters. In the current stage of the investigation different reaction ...

Ujčić, Massimo
Ústav chemických procesů, 2017

High-Volume Municipal Solid Waste Incineration Bottom Ash Concrete.
Reiterman, P.; Holčapek, O.; Krausová, A.; Šyc, Michal; Keppert, M.
2017 - English About 50% of Municipal Solid Waste is incinerated (MSWI) in Europe what represent ca. 50 Mt/a of MSWI bottom ash (BA). Bottom ash contains several marketable components (iron scrap, non-ferrous metals, glass) which can by separated from the main BA stream and placed on the market with secondary sources. The resting material is, by its composition and properties, similar to natural aggregates and can be used in this way. The influence of metals separation form BA on its behaviour in concrete was tested by using BA from Praha Malešice Waste-to-Energy Plant. Particle size fractions 4/8 and 8/16 mm of this BA can be used as aggregates in concrete up to 50 vol. % of given fraction without any significant loss of concrete strength. The combination of valuable component separation form BA and recycling of the rest portion as aggregates feature promising way of BA management reducing the amount of BA to be landfilled to minimum. Keywords: concrete; MSWI bottom ash; recycling Available at various institutes of the ASCR High-Volume Municipal Solid Waste Incineration Bottom Ash Concrete.

About 50% of Municipal Solid Waste is incinerated (MSWI) in Europe what represent ca. 50 Mt/a of MSWI bottom ash (BA). Bottom ash contains several marketable components (iron scrap, non-ferrous ...

Reiterman, P.; Holčapek, O.; Krausová, A.; Šyc, Michal; Keppert, M.
Ústav chemických procesů, 2017

Assessment of Adsorption Isotherms of Hydrogen above the Critical Point on Activated Carbons from Agricultural Waste Materials.
Soukup, Karel; Cruz, G.J.F.; Hejtmánek, Vladimír; Šolcová, Olga
2016 - English Keywords: hydrogen storage; activated carbon; adsorption isotherms Available at various institutes of the ASCR Assessment of Adsorption Isotherms of Hydrogen above the Critical Point on Activated Carbons from Agricultural Waste Materials.

Soukup, Karel; Cruz, G.J.F.; Hejtmánek, Vladimír; Šolcová, Olga
Ústav chemických procesů, 2016

39M-IMMEDIATE Research Report: Remarks on Repeatability Experiments and Perspective Exploitation of MAE Pt/C\nElectrocatalysts.
Kaluža, Luděk; Gulková, Daniela; Soukup, Karel
2016 - English The 36-39 months of the projekt solution were devoted to summarize aspects of the most perspective results on Pt/C electrocatalysts preparation to focus on industrial expoitation. Chellenges of Pt dispersion in the Pt/C were compared with preliminary outcomes from volumetric determination of hydrogen adsorption. Keywords: Pt/c electrocatalysts; industrial exploitation; hydrogen absorption Available at various institutes of the ASCR 39M-IMMEDIATE Research Report: Remarks on Repeatability Experiments and Perspective Exploitation of MAE Pt/C\nElectrocatalysts.

The 36-39 months of the projekt solution were devoted to summarize aspects of the most perspective results on Pt/C electrocatalysts preparation to focus on industrial expoitation. Chellenges of Pt ...

Kaluža, Luděk; Gulková, Daniela; Soukup, Karel
Ústav chemických procesů, 2016

Partition Coefficients Octanol-water of Selected (–)-Menthol-Substituted Chiral Ionic Liquids.
Andresová, Adéla; Feder-Kubis, J.; Florianová, M.; Basarabová, B.; Čubová, K.; Bendová, Magdalena
2016 - English Octanol-water partition coefficients, log P, may be considered as one of the indicators for the tendency to bioaccumulation. For this reason, log P was measured as a function of the alkyl chain length on the cation for selected species of the 1–[(1R, 2S, 5R)-(–)-menthoxymethyl]-3-alkylimidazolium chloride ionic liquid series. The data were processed by means of mathematical gnostics to evaluate the relationship between the structure of the studied ionic liquids and log P. Keywords: ionic liquids; partition coefficients octanol-water; mathematical gnostics Available at various institutes of the ASCR Partition Coefficients Octanol-water of Selected (–)-Menthol-Substituted Chiral Ionic Liquids.

Octanol-water partition coefficients, log P, may be considered as one of the indicators for the tendency to bioaccumulation. For this reason, log P was measured as a function of the alkyl chain length ...

Andresová, Adéla; Feder-Kubis, J.; Florianová, M.; Basarabová, B.; Čubová, K.; Bendová, Magdalena
Ústav chemických procesů, 2016

NMR Aerosolomics: Novel Method for Organic Aerosol Analysis.
Horník, Štěpán; Schwarz, Jaroslav; Sýkora, Jan
2016 - English Keywords: NMR; aerosol Available at various institutes of the ASCR NMR Aerosolomics: Novel Method for Organic Aerosol Analysis.

Horník, Štěpán; Schwarz, Jaroslav; Sýkora, Jan
Ústav chemických procesů, 2016

Application of a Packed Bed Microreactor for Determining the Intrinsic Kinetics of the 2-Methylpropene (isobutene) Hydrogenation..
Vajglová, Zuzana; Stavárek, Petr; Jiřičný, Vladimír; Kolena, J.
2016 - English Keywords: kinetics; hydrogenation of 2-methylpropene; microreactor Available at various institutes of the ASCR Application of a Packed Bed Microreactor for Determining the Intrinsic Kinetics of the 2-Methylpropene (isobutene) Hydrogenation..

Vajglová, Zuzana; Stavárek, Petr; Jiřičný, Vladimír; Kolena, J.
Ústav chemických procesů, 2016

Planet Earth – Global Batch Bioreactor.
Hanika, Jiří; Šolcová, Olga; Kaštánek, František
2016 - English Planet Earth, precisely speaking its surface shell, might be considered as a huge, multiphase, batch, biochemical reactor heated by Sun, whose energy is a unique resource. The Sun ensures our earthly life uncondicionally; moreover, it compensated the heat losses of the land, water and ice by radiation emitted from the Earth surface to its surrounding space at night. It is evident that in this macro-reactor the complex transport phenomena occurs in phases;involving mass, heat and momentum. Obviously such a responsive batch system can be only limited by resouces of carbon materials utilized in energy produstion for industrial and chemical processes. Keywords: bioreactor; raw materials; global batch system Available at various institutes of the ASCR Planet Earth – Global Batch Bioreactor.

Planet Earth, precisely speaking its surface shell, might be considered as a huge, multiphase, batch, biochemical reactor heated by Sun, whose energy is a unique resource. The Sun ensures our earthly ...

Hanika, Jiří; Šolcová, Olga; Kaštánek, František
Ústav chemických procesů, 2016

Influence of Structure of Ionic on the Properties of Their Mixtures with Water.
Rotrekl, Jan; Bendová, Magdalena; Wagner, Zdeněk; Husson, P.
2015 - English Keywords: ionic liquids; water Available at various institutes of the ASCR Influence of Structure of Ionic on the Properties of Their Mixtures with Water.

Rotrekl, Jan; Bendová, Magdalena; Wagner, Zdeněk; Husson, P.
Ústav chemických procesů, 2015

IR Laser CVD OF Nanodisperse Ge-Si-Sn Alloys Obtained by Dielectric Breakdown of GeH4/SiH4/SnH4 Mixtures
Křenek, Tomáš; Bezdička, Petr; Murafa, Nataliya; Šubrt, Jan; Pola, Josef
2015 - English Nowadays, great attention is devoted to Ge-Si-Sn ternary system, because Si1-x-yGexSny provides the potential of band gap engineering and tuning of the optical properties. IR laser irradiation of equimolar gaseous GeH4 + SiH4 + SnH4 + Ar mixture results in simultaneous decomposition of all three compounds and it allows deposition of nanostructured solid film. Analysis of the films by FTIR and Raman spectroscopy, X-ray diffraction analysis and electron microscopy revealed crystalline nanobodies of pure beta-Sn and crystalline nanoobjects of Ge1-x-ySixSny embedded in an amorphous metastable Ge-Si-Sn alloy. This process allows co-decomposition of all silicon, germanium and tin hydrides which is caused by combination of infrared multiple photon dissociation of absorbing silane and currently proceeding LIDB. This is followed by intermixing/clustering of extruded metal atoms in the gas phase. Keywords: IR laser; thermal decomposition; Ge/Si/Sn nanoalloys Available at various institutes of the ASCR IR Laser CVD OF Nanodisperse Ge-Si-Sn Alloys Obtained by Dielectric Breakdown of GeH4/SiH4/SnH4 Mixtures

Nowadays, great attention is devoted to Ge-Si-Sn ternary system, because Si1-x-yGexSny provides the potential of band gap engineering and tuning of the optical properties. IR laser irradiation of ...

Křenek, Tomáš; Bezdička, Petr; Murafa, Nataliya; Šubrt, Jan; Pola, Josef
Ústav chemických procesů, 2015