Zobrazeno 1 - 10
of 29
pro vyhledávání: '"G Vorbeck"'
Publikováno v:
Journal of Catalysis. 193:319-329
The oxidation of n-butane to maleic anhydride is possible under fuel-rich conditions (nC4/O2=0.6) at 400°C by modifying the vanadium phosphorus oxide (V–P–O) catalysts by doping with Co or Mo; it is impossible on the undoped V–P–O catalyst,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38e8499b81dcff6a75606dfdc973ef96
https://doi.org/10.1006/jcat.2000.2903
https://doi.org/10.1006/jcat.2000.2903
Autor:
J.A. Legarreta, de Vhj Vincent Beer, de Jw Jan Haan, Jose F. Cambra, J.L.G. Fierro, van Ra Rutger Santen, G Vorbeck, Pedro L. Arias, Bárbara Pawelec
Publikováno v:
Zeolites. 18:250-259
Ni/USY zeolite catalysts have been prepared by either an ion-exchange or an impregnation procedure. The modification of support and the effect of sulfidation on the Ni distribution were examined by various techniques (water adsorption, FT i.r. spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0f90cd907f77dbd6ae0419199ca9007
https://doi.org/10.1016/s0144-2449(97)00010-9
https://doi.org/10.1016/s0144-2449(97)00010-9
Autor:
V.H.J. de Beer, E.M. van Oers, J.W. de Haan, G. Vorbeck, R.A. van Santen, L.J.M. van de Ven, W. J. J. Welters, Hendrik Willem Zandbergen
Publikováno v:
Journal of Catalysis, 161(2), 819-828. Academic Press Inc.
NaY-supported molybdenum sulfide catalysts with increasing Mo loading have been prepared by impregnation with ammonium heptamolybdate and characterized by means of thiophene hydrodesulfurization (HDS), overall sulfur analysis, temperature programmed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d4faf63bb4f33cc1dade8e3b4755743
https://doi.org/10.1006/jcat.1996.0245
https://doi.org/10.1006/jcat.1996.0245
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 190:407-411
Ferrisilicates of MFI structure (HZSM-5) with Si/Fe ratios of 27.5, 35 and 67 have been studied by in situ Mossbauer spectroscopy, and the results are correlated with studies on catalytic conversions of toluene. Various species of iron ions are ident
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65904fcc786b4b36e2de75f7d22331f4
https://doi.org/10.1007/bf02040019
https://doi.org/10.1007/bf02040019
Autor:
Hendrik Willem Zandbergen, R.A. Vansanten, V.H.J. Debeer, W.J.J. Welters, J.W. Dehaan, G. Vorbeck
Publikováno v:
Journal of Catalysis, 150(1), 155-169. Academic Press Inc.
Catalysts of nickel sulfide supported on zeolite Y have been prepared (by impregnation or ion exchange) and characterized by means of thiophene hydrodesulfurization (HDS), sulfur analysis, temperature-programmed sulfiding, 129Xe-NMR, HREM and dynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2472e22f14eb4fdb152594f31649a472
https://doi.org/10.1006/jcat.1994.1332
https://doi.org/10.1006/jcat.1994.1332
Publikováno v:
ChemInform. 25
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdfa2dea8d335d357cb01d7b97bd244a
https://doi.org/10.1002/chin.199418258
https://doi.org/10.1002/chin.199418258
Autor:
Manfred Richter, G. Vorbeck, Hendrik Kosslick, K. Szulzewsky, K. Ehrhardt, J. Richter-Mendau, Barbara Parlitz, Vu Anh Tuan
Publikováno v:
Berichte der Bunsengesellschaft für physikalische Chemie. 96:586-597
The isomerization of meta-xylene under normal pressure was studied in the temperature range 570–770 K on three catalyst series, viz. (i) gallosilicates with a constant Si/Ga ratio of 50, but different synthesis times ranging from 5 to 96 h, (ii) ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f2511e36fa910734f64d2c2263af006
https://doi.org/10.1002/bbpc.19920960413
https://doi.org/10.1002/bbpc.19920960413
MFI ferrisilicates with different iron contents (Si/Fe ratios of 27.5, 35, 39 and 67)were investigated under reducing and catalytic conditions by in situ techniques (ESR and Mossbauer spectroscopies). Framework substituted and extra-framework iron sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26e50c617b84eedcf873e63f50e56a3e
https://doi.org/10.1016/s0167-2991(06)81225-5
https://doi.org/10.1016/s0167-2991(06)81225-5
Autor:
J.W. de Haan, L.J.M. van de Ven, R. A. Van Stanten, V.H.J. de Beer, G. Vorbeck, W. J. J. Welters, H. A. M. Verhulst
Publikováno v:
Journal of Physical Chemistry, 98(28), 7056-7062. American Chemical Society
A new assignment of the signals in the 23Na DOR NMR spectra to the different sodium sites in dehydrated NaY zeolite is presented. 23Na DOR and MASNMR measurements of dehydrated NaY, Ca2+-exchanged NaY samples, and NaY samples in which Mo(CO)6 is adso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9c9437bd9fa5aff2cc076dd35efdbe4
https://research.tue.nl/nl/publications/681a188a-7f17-46d5-82ba-3e9517e18ad0
https://research.tue.nl/nl/publications/681a188a-7f17-46d5-82ba-3e9517e18ad0
Autor:
V.H.J. de Beer, J.W. de Haan, Henny W. Zandbergen, G. Vorbeck, R.A. van Santen, W. J. J. Welters, L.J.M. van de Ven
NaY supported Mo or Ni sulfide catalysts prepared by impregnation, ion exchange or gas phase deposition followed by various pretreatment procedures show different catalytic properties in thiophene hydrodesulfurization. These differences are discussed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00c9cbd15de1ba559e812d44b1c7fb2c
https://doi.org/10.1016/s0167-2991(08)63711-8
https://doi.org/10.1016/s0167-2991(08)63711-8