Number of found documents: 143
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Basic characteristics of sulfide catalysts for the direct decomposition of H2S
Bonnet, Florian; Kaluža, Luděk
2024 - English
Sulfide catalysts are crucial in the hydrodesulfurization (HDS) of petroleum fractions, facilitating the hydrogenolysis of carbon-sulfur bonds. This process generates significant volumes of hydrogen sulfide (H2S), which is typically processed in the Claus unit. However, excess H2S can overwhelm the Claus process, creating both operational and environmental challenges. Researchers are now exploring sulfide catalysts for the direct thermo-catalytic decomposition of H2S to address this issue. Supported catalysts, like Mo/Al2O3, and commercial catalysts, considered typical monolayer-type well-dispersed catalysts, show the highest O2 uptake, ranging from 41.29 μmol/g for MoS2/Al2O3 (KLO) to 58.70 μmol/g for the commercial 715. Unsupported multilayer catalysts, such as Ni/MoWS2 (KKP), exhibit lower O2 uptake at 2.54 μmol/g, though it demonstrates high HDS activity with thiophene. Moreover, O2 uptake effectively describes the sintering of the Mo monolayer phase during the thermocatalytic reaction of H2S at 800°C. These O2 uptakes clearly correlate with the XRD patterns, where the MoS2 phase is X-ray amorphous with an O2 uptake of about 19.04 μmol/g, while the MoS2 phase in the spent catalyst shows certain crystallinity exhibiting an average particle size by Scherrer equation of about 6 nm and the O2 uptake of 1.63 μmol/g. O2 chemisorption thus serves as a valuable measure of the dispersion of Mo sulfides. The results obtain with the study of CoMo/Al2O3 (KJJ-family catalysts), highlight the correlation between the increasing amount of adsorbed O2 with the increasing nominal loading of MoO3 and the increasing rate constant of thiophene kTH. This research reveals the potential of these catalysts in hydrocarbon refining. The findings underline the connection between catalytic chemistry, process engineering, and environmental sustainability, with the objective to enhance industrial refining processes. Keywords: sulfide catalyst; O2 chemisorption; H2S decomposition Available at various institutes of the ASCR
Basic characteristics of sulfide catalysts for the direct decomposition of H2S

Sulfide catalysts are crucial in the hydrodesulfurization (HDS) of petroleum fractions, facilitating the hydrogenolysis of carbon-sulfur bonds. This process generates significant volumes of hydrogen ...

Bonnet, Florian; Kaluža, Luděk
Ústav chemických procesů, 2024

Novel embedding resins for 3D-SEM II
Šlouf, Miroslav; Pavlova, Ewa; Strachota, Beata; Strachota, Adam; Nebesářová, Jana; Týč, Jiří; Krzyžánek, Vladislav; Skoupý, Radim
2023 - English
Research report for Thermo Fisher Scientific s. r. o., based on common project awarded by TA CR (program: National center of competence, TN01000008). Keywords: novel embedding resins; 3D-SEM microscopy; higher e-beam resistance Available at various institutes of the ASCR
Novel embedding resins for 3D-SEM II

Research report for Thermo Fisher Scientific s. r. o., based on common project awarded by TA CR (program: National center of competence, TN01000008).

Šlouf, Miroslav; Pavlova, Ewa; Strachota, Beata; Strachota, Adam; Nebesářová, Jana; Týč, Jiří; Krzyžánek, Vladislav; Skoupý, Radim
Ústav makromolekulární chemie, 2023

Fish stock survey of the Lake Sevan in 2023 – catch summary report
Prchalová, Marie
2023 - English
Catch summary report on survey of fish stock of the Lake Sevan in July 2023.\n Keywords: gillnets; hydroacoustics; biomass Available at various institutes of the ASCR
Fish stock survey of the Lake Sevan in 2023 – catch summary report

Catch summary report on survey of fish stock of the Lake Sevan in July 2023.\n

Prchalová, Marie
Biologické centrum, 2023

Fish stock survey of the Lake Sevan in 2023 – final report
Prchalová, Marie; Kubečka, Jan
2023 - English
Final report on survey of fish stock of the Lake Sevan in July 2023. Keywords: gillnets; hydroacoustics; biomass Available at various institutes of the ASCR
Fish stock survey of the Lake Sevan in 2023 – final report

Final report on survey of fish stock of the Lake Sevan in July 2023.

Prchalová, Marie; Kubečka, Jan
Biologické centrum, 2023

Novel embedding resins for 3D-SEM
Šlouf, Miroslav; Pavlova, Ewa; Strachota, Beata; Strachota, Adam; Nebesářová, Jana; Týč, Jiří; Krzyžánek, Vladislav; Skoupý, Radim
2022 - English
The report contains the detailed analysis of novel embedding resins for 3D-SEM. Keywords: novel embedding resins; 3D-SEM microscopy; higher e-beam resistance Available at various institutes of the ASCR
Novel embedding resins for 3D-SEM

The report contains the detailed analysis of novel embedding resins for 3D-SEM.

Šlouf, Miroslav; Pavlova, Ewa; Strachota, Beata; Strachota, Adam; Nebesářová, Jana; Týč, Jiří; Krzyžánek, Vladislav; Skoupý, Radim
Ústav makromolekulární chemie, 2022

Methodical procedures for preparation and observation of various types of biological samples using a CL detector
Vancová, Marie; Horodyský, P.; Kolouch, A.; Krzyžánek, Vladislav; Skoupý, Radim
2021 - English
Aplikační příklady využití funkčního vzorku katodoluminescenčního detektoru firmy Crytur pro jeho využití v biologickém výzkumu Keywords: Cathodoluminescence; scanning electron microscopy; biological specimens; Katodoluminescence; skenovací elektronový mikroskop; biologické vzorky Available at various institutes of the ASCR
Methodical procedures for preparation and observation of various types of biological samples using a CL detector

Aplikační příklady využití funkčního vzorku katodoluminescenčního detektoru firmy Crytur pro jeho využití v biologickém výzkumu

Vancová, Marie; Horodyský, P.; Kolouch, A.; Krzyžánek, Vladislav; Skoupý, Radim
Biologické centrum, 2021

EDWork Manual IV. User Guide to EDWork 4.1
Sobolík, Václav; Wein, Ondřej
2020 - English
The presen report would serve as a user guide to the software package EDWork 4.1. Keywords: electrodiffusion technique; edwork manual; user guide Available at various institutes of the ASCR
EDWork Manual IV. User Guide to EDWork 4.1

The presen report would serve as a user guide to the software package EDWork 4.1.

Sobolík, Václav; Wein, Ondřej
Ústav chemických procesů, 2020

Souhrnná výzkumná zpráva Aalto 1903
Hanuš, Jan; Fabiánek, Tomáš; Fajmon, Lukáš
2019 - English
Within the airborne hyperspectral campaign for a Finnish university Aalto University were scanned two locations - Hyytiälä (FI) - Järvselja (EST). The scanned processed data is used for other scientific purposes.\nAbstrakt: V rámci letecké hyperspektrální kampaňe pro Finskou univerzitu Aalto-yliopisto byly nasnímány dvě lokality - Hyytiälä (FI) - Järvselja (EST). Předaná zpracovaná data jsou používány pro další vědecké účely. Keywords: flis; hyperspectral; data; lidar; processing Available at various institutes of the ASCR
Souhrnná výzkumná zpráva Aalto 1903

Within the airborne hyperspectral campaign for a Finnish university Aalto University were scanned two locations - Hyytiälä (FI) - Järvselja (EST). The scanned processed data is used for other ...

Hanuš, Jan; Fabiánek, Tomáš; Fajmon, Lukáš
Ústav výzkumu globální změny , 2019

Hydroacoustic assessment of the fish stock in Lake Balaton in 2017
Tušer, Michal; Muška, Milan
2018 - English
This report describes a study of open-water fish assemblage in Lake Balaton, Hungary, in 2017. The lake was acoustically surveyed using two horizontally-oriented 120 kHz transducers. The observed fish stock was assessed on the basis of fish sizes, abundance, biomass, and spatial distribution in the lake. Keywords: biomass; abundance; open-water distribution Available at various institutes of the ASCR
Hydroacoustic assessment of the fish stock in Lake Balaton in 2017

This report describes a study of open-water fish assemblage in Lake Balaton, Hungary, in 2017. The lake was acoustically surveyed using two horizontally-oriented 120 kHz transducers. The observed fish ...

Tušer, Michal; Muška, Milan
Biologické centrum, 2018

Phenotypic Analyses of the HD Transgenic Minipig Model (A11609)
Ellederová, Zdeňka
2018 - English
The transgenic Huntington's disease minipigs (TgHD) express N‐terminal part of human mutated huntingtin (124Q) under the control of human huntingtin promoter. The founder animal, born in 2009, gave birth to four subsequent generations with an equal contribution of wild‐type (WT) and transgenic (TgHD) piglets in all litters. The model is being used for preclinical huntingtin lowering studies. Here we take different non-invasive and invasive approaches, some of which are unique for large animal models, to study the phenotype development comparing WT and TgHD siblings. We show gradual progression of the disease in these TgHD animals. Moreover, some biomarkers were identified. These markers could serve for monitoring of organism response to HD treatment to assess efficacy and safety in preclinical studies prior to human clinical trials. Keywords: minipig Available at various institutes of the ASCR
Phenotypic Analyses of the HD Transgenic Minipig Model (A11609)

The transgenic Huntington's disease minipigs (TgHD) express N‐terminal part of human mutated huntingtin (124Q) under the control of human huntingtin promoter. The founder animal, born in 2009, gave ...

Ellederová, Zdeňka
Ústav živočišné fyziologie a genetiky, 2018

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