Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Ludmila Kubelková"'
Publikováno v:
Applied Catalysis A: General. 169:119-125
Reductive amination of cyclohexanol over acidic and nickel containing metallosilicates was studied at atmospheric pressure and different temperatures. Pure H + as well as Ni 2+ charge-compensating cations were found to be inactive in this reaction. E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8dfaf6a0be7b6c05ed7473dada75718
https://doi.org/10.1016/s0926-860x(98)00011-8
https://doi.org/10.1016/s0926-860x(98)00011-8
Autor:
Jana Nováková, J Meusinger, V. Bosacek, Ludmila Kubelková, Libor Brabec, R Klik, Dieter Freude, M Jeschke
Publikováno v:
Applied Catalysis A: General. 167:309-320
Ga was introduced into MFI structures in three ways: direct synthesis, postsynthetic modification of boralites, and `solid state exchange' with HZSM-5. The state of Ga species was characterized by 71 Ga MAS NMR, XRD and TPR; additional information wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd115deb1ed11e76f945ca5e11b4c2bf
https://doi.org/10.1016/s0926-860x(97)00325-6
https://doi.org/10.1016/s0926-860x(97)00325-6
Publikováno v:
The Journal of Physical Chemistry B. 102:1437-1443
The adsorption of acetonitrile on H-[Fe]ZSM-5 and H-[Al]ZSM-5 was studied using microcalorimetry, temperature-programmed desorption (TPD), and FTIR in order to characterize the differences between the Bronsted acid sites in these two materials. Each
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ddce3144a0bd870653b889f2cc34ef4
https://doi.org/10.1021/jp9727299
https://doi.org/10.1021/jp9727299
Publikováno v:
Zeolites. 19:343-348
High-field 71 Ga MAS n.m.r. spectroscopy shows that gallium occupies preferentially the framework positions in Ga-MFI structures prepared by direct synthesis from a gel. However, modifications of boralite with Ga 3+ in autoclave experiments provide s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a233f7218ecac2387df1eeb24da2fb62
https://doi.org/10.1016/s0144-2449(97)00089-4
https://doi.org/10.1016/s0144-2449(97)00089-4
Publikováno v:
Zeolites. 19:279-287
The XPS method is employed to compare the behavior of [Pt(NH3)4]2+ ions in the surface layers of KX and KY zeolites with that in the zeolite bulk. FT i.r. and MS-t.p.d. methods are used to characterize the bulk properties. XPS and FT i.r. reveal the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba4c069036484b5e9e0fcba3bd49f6ee
https://doi.org/10.1016/s0144-2449(97)00066-3
https://doi.org/10.1016/s0144-2449(97)00066-3
Autor:
Ludmila Kubelková, Lucie Drozdová
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 93:2597-2602
[{Pt 3 (CO) 3 (µ-CO) 3 } n ] 2- complexes (Chini complexes) have been synthesized by the ‘ship-in-bottle’ technique in X and Y zeolites with different charge-compensating alkali-metal cations. The reaction kinetics of the reductive carbonylation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fc73af582ea01b1e3741c9440d731d3
https://doi.org/10.1039/a701021d
https://doi.org/10.1039/a701021d
Autor:
Jana Nováková, Ludmila Kubelková
Publikováno v:
Collection of Czechoslovak Chemical Communications. 62:299-308
Pt/NaX zeolite (3 Pt atoms per unit cell) was prepared by vacuum decomposition of [Pt(NH3)4]2+. NO + 13CO and N2O + 13CO reactions were studied under static conditions at 180, 205 and 230 °C and followed by temperature programmed desorption (TPD) of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::058fc1afb576c389bf1de193e41714a6
https://doi.org/10.1135/cccc19970299
https://doi.org/10.1135/cccc19970299
Autor:
Jacques Fraissard, Claudine Dorémieux-Morin, Ludmila Kubelková, Lara Heeribout, Robert Vincent
Publikováno v:
Catalysis Letters. 43:143-147
The simulation of 4 K 1H broad-line NMR spectra of CD3OH interacting with the acidic OH groups of H-mordenite zeolite shows no CD3OH2 + ions but hydrogen-bonded complexes. For high CD3OH concentrations, clusters of hydrogen-bonded methanol molecules
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4e748a78677b82bbf24a29a9424a059
https://doi.org/10.1023/a:1018986405482
https://doi.org/10.1023/a:1018986405482
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 111:123-133
Pt carbonyls were created via reaction of Pt tetraamine complexes in KX and NaX zeolites with CO. The anionic [Pt 3 (CO) 6 ] 2− n Chini complexes formed inside the zeolites were thermally decomposed in vacuum and the residual carbon was combusted u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85851019c5ccf6b175169d3d8b097d38
https://doi.org/10.1016/1381-1169(96)00175-6
https://doi.org/10.1016/1381-1169(96)00175-6
Autor:
Libor Brabec, Zdeněk Bastl, Jana Nováková, Ludmila Kubelková, Günter Schulz-Ekloff, Nils I. Jaeger
Publikováno v:
Zeolites. 16:173-183
Pt2+ autoreduction during the thermal vacuum decomposition of [Pt(NH3)4]2+Me+ faujasites as well as the reaction of CO+NO were studied in dependence on the zeolite composition (effect of different alkali ions Me+: Li, Na, K, Cs, and zeolite Si/Al rat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b64db41861d4fc99504ca8fd5ce0966
https://doi.org/10.1016/0144-2449(95)00125-5
https://doi.org/10.1016/0144-2449(95)00125-5