Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Luděk Kaluža"'
Autor:
Radostina Palcheva, Luděk Kaluža, Tanya Petrova, Lubomir Dimitrov, Daniela Karashanova, Georgi Tyuliev, Květuše Jirátová
Publikováno v:
Crystals, Vol 13, Iss 3, p 543 (2023)
Tri-metallic NiMoW catalysts prepared by impregnating mesoporous aluminas (pore sizes of ~9 nm and surface areas of ~225 m2/g) obtained by sol-gel (NiMoW/Al) and hydrothermal (NiMoW/AlHYDT) processes were investigated in the hydrodesulfurization (HDS
Externí odkaz:
https://doaj.org/article/004b3d2351e4448792e3891aa3c66729
Autor:
Luděk Kaluža, Květa Jirátová, Alla A. Spojakina, Jana Balabánová, Dana Gulková, Martin Koštejn, Radostina Palcheva, Georgi Tyuliev, Radek Fajgar
Publikováno v:
Catalysis Letters.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6101fc5f721d52575a8c773b81a62663
https://doi.org/10.1007/s10562-023-04315-0
https://doi.org/10.1007/s10562-023-04315-0
Autor:
Miroslav Zdražil, Luděk Kaluža
Publikováno v:
Catalysis Letters. 153:311-319
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb3b8cf57568e57220f9ff9990c946c6
https://doi.org/10.1007/s10562-022-03984-7
https://doi.org/10.1007/s10562-022-03984-7
Autor:
Krasimir Tenchev, Alla Spojakina, K. Jiratova, R. Palcheva, G. Avdeev, Luděk Kaluža, Georgi Tyuliev, J. Moravčík, Lubomir Dimitrov
Publikováno v:
Catalysis Letters. 150:3276-3286
The effect of Zn/Al ratio and addition of silica to Al–Znx oxides on the structure and catalytic properties of supported NiMo catalysts in hydrodesulfurization reaction of thiophene was studied. NiMo catalysts were synthesized by simultaneous impre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05da896c7ba41011e7d61e9de6c33cf4
https://doi.org/10.1007/s10562-020-03232-w
https://doi.org/10.1007/s10562-020-03232-w
Publikováno v:
Catalysis Today. 333:190-195
0.20, 0.37, 0.83, 1.55 and 3.35 wt.% of gold was impregnated on Ce0.5Zr0.5O2 prepared by sol-gel method. Systematic characterizations of gold catalysts by atomic emission spectroscopy, N2 physisorption, X-ray powder diffraction, H2 chemisorption, tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecbc40a9fcf3bd44f6ba728b8f74f008
https://doi.org/10.1016/j.cattod.2018.04.005
https://doi.org/10.1016/j.cattod.2018.04.005
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 127:887-902
Mo, CoMo and NiMo sulfide catalysts were prepared using MgO, Al2O3, ZrO2, TiO2, MCM-41 and activated carbon supports. The catalysts were tested in parallel hydrodeoxygenation (HDO) of octanoic acid and hydrodesulfurization (HDS) of 1-benzothiophene.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95c462a15745c449e31eb280ed87a45f
https://doi.org/10.1007/s11144-019-01620-x
https://doi.org/10.1007/s11144-019-01620-x
Autor:
Jana Balabánová, Martin Koštejn, R. Palcheva, Georgi Tyuliev, Alla Spojakina, Daniela Gulková, Luděk Kaluža, K. Jiratova
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 125:319-337
The novel γ-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), amm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::806a91cc375937a5189f26a2fb1137f9
https://doi.org/10.1007/s11144-018-1436-7
https://doi.org/10.1007/s11144-018-1436-7
Autor:
Luděk Kaluža, Miroslav Zdražil
Publikováno v:
Catalysis Communications. 107:62-67
A sulphide CoMo/Nb2O5 HDS catalyst was prepared for the first time using nitrilotriacetic acid (NTA) as complexing agent, where the impregnation solution consisted of NTA, cobalt carbonate and ammonium heptamolybdate. It contained neither NH4OH nor N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9fd9db50aebf29938f4668b68fe31b8
https://doi.org/10.1016/j.catcom.2018.01.020
https://doi.org/10.1016/j.catcom.2018.01.020
Autor:
Luděk Kaluža, David Kubička
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 122:333-341
The Al2O3 supported monometallic Co, Ni and Mo and bimetallic CoMo and NiMo catalysts were compared in rapeseed oil hydrodeoxygenation (HDO) reaction after in situ sulfidation. The reaction was described by five pseudo-first order rate constants (k 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d5a5402b18822c49aa827167873194d
https://doi.org/10.1007/s11144-017-1247-2
https://doi.org/10.1007/s11144-017-1247-2
Autor:
Alla Spojakina, Lubomir Dimitrov, Luděk Kaluža, Georgi Tyuliev, Květa Jirátová, Georgi Avdeev, R. Palcheva
Publikováno v:
Applied Catalysis A: General. 520:24-34
Nb modified mesoporous SBA-15 and HMS materials were synthesized and studied as a support of NiMo. Calcined co-impregnated NiMo catalysts were prepared using ammonium heptamolybdate and nickel nitrate. Moreover, NiMo catalysts prepared in this manner
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::368a1a43b4c66ba98740cfc3788383fe
https://doi.org/10.1016/j.apcata.2016.04.008
https://doi.org/10.1016/j.apcata.2016.04.008