Zobrazeno 1 - 10
of 80
pro vyhledávání: '"H. G. Jerschkewitz"'
Autor:
E. Schreier, G. Lischke, Bodo Zibrowius, W. Storek, G. Oehlmann, B. Parlitz, H.‐G. Jerschkewitz, R. Eckelt
Publikováno v:
ChemInform. 23
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20ec33723360803a4d2a3ca66a326069
https://doi.org/10.1002/chin.199203025
https://doi.org/10.1002/chin.199203025
Publikováno v:
ChemInform. 24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fb95d69f5cd4cdd2a09e3a87eec49c2
https://doi.org/10.1002/chin.199303023
https://doi.org/10.1002/chin.199303023
Autor:
H.-G. Jerschkewitz, Bodo Zibrowius, J. Jaenchen, B. Parlitz, Ursula Lohse, Michael Hunger, H. Stach
Publikováno v:
ChemInform. 24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db8741cf5858f7664c921c8f106d4bf2
https://doi.org/10.1002/chin.199303022
https://doi.org/10.1002/chin.199303022
Autor:
H.-G. Jerschkewitz, B. Zibrowius, G. Lischke, B. Parlitz, G. Öhlmann, E. Schreier, Reinhard Eckelt, W. Storek
Publikováno v:
Journal of Catalysis. 132:229-243
Acidic properties of P-modified H-ZSM-5 have been characterized by means of ammonium exchange, temperature-programmed desorption of ammonia (NH3 TPD), as well as IR, 27Al MAS NMR, and 31P MAS NMR spectroscopy. The introduction of phosphorus by impreg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aabe3cacc88f0913570a69acf05e6c1c
https://doi.org/10.1016/0021-9517(91)90259-7
https://doi.org/10.1016/0021-9517(91)90259-7
Publikováno v:
Applied Catalysis. 57:167-177
Controlled hydrothermal treatment of H-ZSM-5 at 500°C causes a transformation of framework into non-framework aluminium, as indicated by means of cation exchange and IR spectroscopy. After treatment with nitric acid, partial extraction of non-framew
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e95f0631b04148a1c9f94f8985b7b0b
https://doi.org/10.1016/s0166-9834(00)80730-7
https://doi.org/10.1016/s0166-9834(00)80730-7
Autor:
I. Schulz, H.-G. Jerschkewitz, R. Eckelt, T. Gross, K. Wehner, G. Lischke, B. Parlitz, D. Timm, G. Öhlmann
Summary Samples of P-modified ZSM-5 type zeolite previously dealuminated by steaming at different temperatures were used as catalytically active components in the conversion of methanol to lower olefins at 560°C. Results show that dealumination at 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c92c0ecdc056d03788519e5ed1105194
https://doi.org/10.1016/s0167-2991(08)62926-2
https://doi.org/10.1016/s0167-2991(08)62926-2
Autor:
H.-G. Jerschkewitz, G. O¨hlmann, E. Schreier, E. LöFfler, Barbara Parlitz, Bodo Zibrowius, G. Lischke, R. Eckelt
Modifying a template-free synthesized and hydrothermally dealuminated ZSM-5 type zeolite with orthophosphoric acid vields catalysts for the high-temperature MTO-reaction which are superior to the merely aealuminated zeolites in respect of C 2 -C 4 -o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e15f9d9ec0bfa1bd1f5cf38f88f7c275
https://doi.org/10.1016/s0167-2991(08)62896-7
https://doi.org/10.1016/s0167-2991(08)62896-7
Autor:
Harry Pfeifer, U. Lohse, Dieter Freude, Dagmar Prager, H.-G. Jerschkewitz, G. Oehlmann, Eike Brunner
Publikováno v:
Chemical Physics Letters. 139:325-330
1 H and 27 Al MAS NMR techniques are used to study the dealumination process caused by hydrothermal treatment and acid leaching of the zeolites H-Y, H-mordenite, and H-ZSM-5. Concentrations could be determined for the SiOH, AlOH and bridging OH group
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1efae4320823f4f264167ae75f27f20
https://doi.org/10.1016/0009-2614(87)80566-3
https://doi.org/10.1016/0009-2614(87)80566-3
Publikováno v:
Reaction Kinetics and Catalysis Letters. 18:479-483
The effect of alkali metal admixtures (Li, Na, K, Rb, and Cs) on V/SiO2 catalysts was studied by ESR spectroscopy. Alkali metals strongly change the VO2+ spectra. Reduction leads to spectra showing a slow rotational motion of VO2+ species on the supp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::313f801c94be97c53d8795796b3bc63a
https://doi.org/10.1007/bf02065646
https://doi.org/10.1007/bf02065646
Publikováno v:
Applied Catalysis. 9:235-250
Two series of alkali metal promoted V/SiO 2 catalysts were investigated in the catalytic oxidation of ethanol and 1-butene and by ESR spectroscopy. The influence of alkali metals is shown to be opposite for both reactions. The alkali metals increase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e46a5d753d3a15df1680d7d4216fc514
https://doi.org/10.1016/0166-9834(84)80068-8
https://doi.org/10.1016/0166-9834(84)80068-8