Zobrazeno 1 - 10
of 88
pro vyhledávání: '"H. Brumberger"'
Publikováno v:
Journal of Applied Crystallography. 38:324-332
Information about the metal phase in a supported-metal catalyst can be obtained using anomalous small-angle X-ray scattering (ASAXS). The difference between the scattering profiles for SAXS at two different wavelengths near the metal's absorption edg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e6398aa218f8f4dfe6ee98ae375c35f
https://doi.org/10.1107/s0021889805002165
https://doi.org/10.1107/s0021889805002165
Publikováno v:
Journal of Applied Crystallography. 38:147-151
A supported-metal catalyst can be considered as a mixture of three homogeneous phases: support, void and metal. Information about the metal phase alone can be obtained using anomalous small-angle X-ray scattering (ASAXS), which requires measuring the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2731fc40caf7d4e330e751bcc546741
https://doi.org/10.1107/s0021889804029000
https://doi.org/10.1107/s0021889804029000
Autor:
H. Brumberger
Proceedings of the NATO Advanced Study Institute, Como, Italy, May 12--22, 1993
Publikováno v:
Journal of Applied Crystallography. 29:526-530
Small-angle X-ray scattering observations on Pt/NaY catalysts, made in situ during calcination and reduction stages of processing, demonstrate the usefulness of this technique in following morphological changes. Observations show that the same platin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8afe0e60b2dcd32858919ef82a94b07
https://doi.org/10.1107/s0021889896002981
https://doi.org/10.1107/s0021889896002981
Autor:
H. Brumberger
Publikováno v:
Modern Aspects of Small-Angle Scattering ISBN: 9789048144990
Solid, multicomponent, multiphase catalysts, for example platinum supported on SiO2, play an important technological and economic role. The correlations between catalytic activity and the physical and chemical properties of these materials have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81ec1088dfe6663e6cb0ad56119cbd85
https://doi.org/10.1007/978-94-015-8457-9_11
https://doi.org/10.1007/978-94-015-8457-9_11
Publikováno v:
Acta Crystallographica Section A Foundations of Crystallography. 52:C488-C488
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aad5c8d6370ac7795c1c7c642c9464cf
https://doi.org/10.1107/s0108767396080026
https://doi.org/10.1107/s0108767396080026
Autor:
H. Brumberger, J. Goodisman
Publikováno v:
Journal of Applied Crystallography. 16:83-88
A structural model, based on Voronoi polyhedral cells partly filled with support and metallic catalyst, is proposed for interpreting the small-angle X-ray scattering of heterogeneous catalysts. The model's properties are described, and the model is a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b0da3fc9bfe73bcd68c6552452a3a57
https://doi.org/10.1107/s002188988300998x
https://doi.org/10.1107/s002188988300998x
Publikováno v:
Journal of Catalysis. 92:199-210
Small-angle X-ray scattering measurements have been performed on TiO2 supports and PtTiO2 catalysts reduced at low and high temperatures, the latter exhibiting a strong metal-support interaction. For the supports the small-angle scattering yielded sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07bf40ec02ed69ad0c2948bc5c2557e9
https://doi.org/10.1016/0021-9517(85)90254-4
https://doi.org/10.1016/0021-9517(85)90254-4
Publikováno v:
Journal of Applied Crystallography. 21:117-128
The Porod law states that i(h), the intensity of X-radiation scattered by an ideal multiphase noncrystalline system, for `large' momentum transfer values (≡ h) approaches lh−4 and that l is linearly related to the interphase surface areas. A more
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dc5fcc3f5a2973106f46054cb3c82aa
https://doi.org/10.1107/s0021889887010409
https://doi.org/10.1107/s0021889887010409
Publikováno v:
Journal of Applied Crystallography. 19:287-299
Small-angle X-ray scattering (SAXS) can be used to obtain interphase surface areas of a system, such as a supported-metal catalyst, composed of internally homogeneous phases with sharp interphase boundaries. Measurements of SAXS for samples of porous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef4b07cf5b51d2af1cef352d84ee973c
https://doi.org/10.1107/s0021889886089331
https://doi.org/10.1107/s0021889886089331