Národní úložiště šedé literatury Nalezeno 48 záznamů.  předchozí11 - 20dalšíkonec  přejít na záznam: Hledání trvalo 0.00 vteřin. 
Ethylene Oxychlorination over CuCl2/γ-Al2O3 Catalyst in Micro- and Milli-structured Reactors.
Vajglová, Zuzana ; Moro, A. ; Kumar, N. ; Eränen, K. ; Peurla, M. ; Peltonen, J. ; Murzin, D.Yu. ; Salmi, T.
In the microreactor, the 1,2-dichlorethane selectivities of 4.7% and 53.6% were achieved with the ethene conversions of 1.6% and 6.4%, respectively. The other important product was chloroethane. The formation of vinyl chloride by-product of 1.6% was observed only at the highest temperature 250 °C with highest ethene conversion achieved (6.4%). No other by-products were observed. In the millireactor, the 1,2-dichlorethane selectivities exceeding 96% were achieved at ethene conversions higher than 11% within the entire experimental range. Chloroethane, vinyl chloride, 1,2-dichloroethylene (trans) were formed, but only in minor amounts.
Plný tet: SKMBT_C22018100413020 - Stáhnout plný textPDF
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Ceria-Titania Support of Cobalt Oxide Catalysts: The Effect of Surfactant Addition on Physical-Chemical and Catalytic Properties.
Jirátová, Květa ; Kovanda, F. ; Balabánová, Jana
This study is focused on the effect of Pluronic P123® addition during preparation of the ceria-titania supports on the properties of cobalt oxide catalysts in the deep oxidation of ethanol. The supports with CeO2/TiO2 molar ratio of 0.25 were prepared by sol-gel reaction and subsequent heating at 500 °C.
Plný tet: SKMBT_C22017112810211 - Stáhnout plný textPDF
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Ceria-Zirconia Coated Stainless Steel Meshes as Supports of Cobalt Oxide Catalysts.
Dvořáková, M. ; Krupková, K. ; Kovanda, F. ; Balabánová, Jana ; Soukup, Karel ; Jirátová, Květa
In this study we attempted to increase stability of the cobalt oxide layer on the stainless steel support to application of ceria-zirconia interlayer.
Plný tet: SKMBT_C22017111015002 - Stáhnout plný textPDF
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Deep Oxidation of Ethanol over SiO2-Supported Heteropoly Acids Modified with Palladium.
Jirátová, Květa ; Spojakina, A. ; Balabánová, Jana ; Palcheva, R. ; Tyuliev, G. ; Karakirova, Y.
The purope of this study was to investigate the effect of silica-supported 12-phosphomolybdic acids in which molybdenum is partially substituted for vanadium on deep oxidation of ethanol and the effect of introduction of palladium to the catalysts on their activity and selectivity in total ethanol oxidation.
Plný tet: SKMBT_C22017111015001 - Stáhnout plný textPDF
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Silica-Alumina Supported Catalysts in Hydrodesulfurization of 4,6-Dimethyldibenzothiophene and 1-Benzotiophene Parallel with Hydrodeoxygenation of Octanoic Acid.
Gulková, Daniela ; Vít, Zdeněk ; Kaluža, Luděk
HDS on Pd-Pt catalysts proceeded almost exclusively by the hydrogenation (HYD) route. Activities of majority of Pd-Pt catalysts correlated with their Brønsted acidities while not with metal dispersion2. The studied sulfidic CoMo phase increased DDS route (formation of DMBP) and results in similar HDS/HDO activity and selectivity (kEB/kHC) as the reference Al2O3 supported counterpart. We believe that high acidity of MSAs positively influence hydrorafination of 4,6-DMDBT and oxygen (OA) containing feeds, which motivate our forthcoming research.
Plný tet: SKMBT_C22017111015003 - Stáhnout plný textPDF
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Reaction Kinetic Study of Heterogeneous Hydrogenations for 3D-printed Catalysts.
Ujčić, Massimo
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
Deep Oxidation of Ethanol over Co-Mn-Al Mixed Oxides Supported on Pelletized Magnesia-Alumina: Role of Acid-base Properties.
Jirátová, Květa ; Balabánová, Jana ; Kovanda, F. ; Obalová, L.
In the present study, we applied the method of impregnation using acidic solution of metal salts in combination with a support having basic properties that could limit penetration of active components into the support pellets.
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Co3O4 Supported on Different Supports for N2O Decomposition.
Klyushina, A. ; Pacultová, K. ; Jirátová, Květa ; Obalová, L.
In this work Co3O4 catalysts supported on different kind of shaped supports (rings, quadrulobes) were prepared by incipient wetness impregnation method. As support materials commercial supports made of MgAl oxides, Al2O3 and TiO2 were used. The catalysts were characterized by AAS, XRD, Raman, FTIR, SEM, H2-TPR and nitrogen adsorption methods and tested for nitrous oxide decomposition.
Plný tet: SKMBT_C22016090211341 - Stáhnout plný textPDF
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Total Oxidation of Ethanol over Au/Ce0.5Zr0.5O2 Catalysts.
Topka, Pavel ; Kaluža, Luděk ; Gaálová, Jana
The aim of this work was to investigate in a detail the effect of Au loading on the catalytic performance of ceria-zirconia supported catalysts in the total oxidation of ethanol.
Plný tet: SKMBT_C22016090211392 - Stáhnout plný textPDF
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