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	Preparation of monolayer and multilayer MoS2 catalysts for decoposition of H2S Kaluža, Luděk ; Zdražil, Miroslav ; Gulková, Daniela ; Soukup, Karel Monolayer catalyst MoS2/Al2O3 and multilayer (crystalline) catalysts MoS2/Al2O3 and MoS2/TiO2 were prepared. The basic structural-textural parameters of the catalysts were determined by N2 physisorption and X-ray diffraction analysis. Detailed record
	Preparation and Activity on Unsupported Hydrotreating Catalysts. Moravčík, Jan ; Gulková, Daniela ; Kaluža, Luděk The aim of the present work is to investigate reactivity of precursors of CoMo and NiMo catalysts (molar ratio 0.3- Co/(Co-iMo) ol'Co or Ni) in aqueous solution with intention to prepare high surface area (ST) sulfides. Detailed record
	Hydrotreating over Silica-Alumina Supported Catalysts Gulková, Daniela ; Vít, Zdeněk ; Kaluža, Luděk They are studied for possible use in deep hydrodesulfurization (HDS)1 while they have not been investigated for the HDS parallel with hydrodeoxygenation (HDO)2. The aim was to find the effect of active phase and support of Pd and PdPt catalysts on activity and selectivity in HDS of 4,6-dimethyldibenzothiophene (DMDBT) and HDS/HDO of l-benzothiophene/octanoic acid (BT/OA). Fulltext: content.csg - DOC Plný tet: 00206B6C274C191104130820 - DOC Detailed record
	The Novel Preparation of Hydrotreating Catalysts Using Machanochemical Activation of Aluminum Nitrate and NiMo Complexes. Kaluža, Luděk ; Jirátová, Květa ; Tyuliev, G. ; Gulková, Daniela ; Balabánová, Jana ; Palcheva, R. ; Koštejn, Martin ; Spojakina, A. The novel Al2O3 synthesis by mechanochemical activation of aluminum nitrate hydrate was applied to prepare hydrodesulfurization (HDS) NiMo catalysts. Impregnation techniques using the complex made by dissolution of nitrilotriacetic acid (NTA), ammonium heptamolybdate and nickel nitrate and the Anderson-type heteropolyoxymolybdate ((NH4)4Ni(OH)6Mo6O18) complex were compared with conventional impregnation using subsequent deposition of ammonium heptamolybdate (first) and nickel nitrate (second) with calcination in between. Properties of the support and HDS catalysts were studied by N2 physisorption, Raman spectroscopy, H2 temperature-programmed reduction (H2-TPR), O2 chemisorption and X-ray photoelectron spectroscopy (XPS). Fulltext: PDF Detailed record
	Preparation and Relative Activity of Nobia-Supported CoMo Hydrodesulfurization Catalysts. Kaluža, Luděk ; Zdražil, Miroslav Evaluation of new supports alternative to alumina, for instance: ZrO2, TiO2, active carbon or zeolites, is an important topic of recent research on hydrodesulfurization catalysts. Nb2O5 was also considered as the support of Mo and Co(Ni)Mo sulfides and as a precursor of the active phase, niobium sulfide. Fulltext: content.csg - PDF Plný tet: SKMBT_C22018110914040 - PDF Detailed record
	Nitrilotriacetic Acid Assisted Deposition of Cobalt Carbonate for the Preparation of Niobia Supported CoMo Hydrodesulfurization Catalysts. Kaluža, Luděk ; Zdražil, Miroslav In the present work, we have prepared the impregnation solution by the new method not using volatile and corrosive NH4OH. Briefly, NTA is practically insoluble in water (0.13 g/100 ml) and pH of its water suspension is about 2.1. Newly, we applied cobalt carbonate, which is also almost insoluble in water (0.3 g/100 ml) and pH of its water suspension is about 8.3. However, we have found that very low solubilities of NTA and cobalt carbonate were sufficient for their mutual reaction in suspension. Fulltext: content.csg - PDF Plný tet: SKMBT_C22018100509420 - PDF Detailed record
	Hydrodesulfurization NiMo Catalysts over Mechanochemically Prepared Gamma-Alumina. Kaluža, Luděk ; Jirátová, Květa ; Tyuliev, G. ; Palcheva, R. ; Koštejn, Martin ; Spojakina, A. The aim of the present work is to explore optimum preparation route of NiMo catalysts for the novel mechanochemically prepared Al2O3 in order to achieve high HDS activity. Specifically, the goals are: i) to up-scale the support synthesis to provide sufficient amount ofAl2O3, ii) to deposit NiMo from solutions of highly soluble precursors by conventional impregnation techniques (I), i.e. sequential impregnation using Mo (first) and Ni (second), and by co-impregnation (Ni+Mo together), i.e. using chelating agent NTA or nickel heteropolyoxomolybdate (HPO), iii) to deposit NiMo from solutions ofslightly soluble precursors by slurry impregnation (SI).\n Fulltext: content.csg - PDF Plný tet: SKMBT_C22018100509420 - PDF Detailed record
	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. Fulltext: content.csg - PDF Plný tet: SKMBT_C22017111015003 - PDF Detailed record
	The Comparison of Sulfide Alumina-Supported Cytalysts in Rapeseed OIl HydrodeOxygenation. Kaluža, Luděk ; Kubička, D. The empirical pseudo-first order rate constant of the hydrocarbons (Hcs) product formation (kHc) increased in the order Ni/Al2O3, Co/Al2O3,CoMo/Al2O3, Mo/Al2O3, NiMo/Al2O3 showing hence a significant synergy between Ni and Mo. Fulltext: content.csg - PDF Plný tet: SKMBT_C22017111015004 - PDF Detailed record
	Effect of Promotion Metals on Activity of Zirconia Supported Molybdenum Sulfide Catalyst in Parallel Hydrodesulfurization of 1-Benzotiophene and Hydrogenation of 1-Methyl-Cyklohex-1-ene. Kaluža, Luděk ; Gulková, Daniela Promotion of hydrodesulfurization and hydrogenation activity of MoS2 supported on unconventional support ZrO2 (baddeleyite, SBET = 108 m2g-1) by Co, Ni, Ru, Rh, Pd, Ir, and Pt was studied. Fulltext: content.csg - PDF Plný tet: SKMBT_C22016112410220 - PDF Detailed record

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