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pro vyhledávání: '"Kärger, Jörg"'
The use of hierarchically organized nanoporous materials has proven to be well suited for counteracting transport hindrance in micropores and the resulting reduction in their technological performance. As a typical example, we consider materials with
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Diffusion is an omnipresent, most fundamental phenomenon in nature and thus critical for the performance of numerous technologies. This is in particular true for nanoporous materials with manifold applications for matter upgrading by separation, puri
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Autor:
Chmelik, Christian, Kärger, Jörg
Diffusion is an omnipresent phenomenon in nature. In the world of molecules, it describes their irregular thermal motion. The interplay of diffusion and interaction of molecules with pore walls of nanoporous materials constitutes the benefit of using
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With reference to these advantages, the poster goes the other way round and identifies a couple of similarities where, on looking at molecular diffusion in nanoporous materials, one is able to recognize features of spreading, which may occur in quite
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The resistance perceived by guest molecules upon entering or leaving a microporous host material (the “surface barrier”) is known to often surpass the influence of diffusion in its interior on the overall rate of molecular uptake and release [1,
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Publikováno v:
Diffusion fundamentals. 25(5):1-11
Fired clay minerals rehydroxylate after firing, a phenomenon that causes the long-term mass gain and expansion seen in archaeological ceramics. During rehydroxylation, fired clay minerals react with H2O to form structural hydroxyl (OH). Recent models
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Autor:
Albers, Tony, Bauer, Michael, Borczyskowski, Christian von, Gerlach, Frank, Heidernätsch, Mario, Kärger, Jörg, Kondrashova, Daria, Radons, Günter, Schubert, Sebastian, Shakhov, Alexander, Täuber, Daniela, Valiullin, Rustem, Zeigermann, Philipp
Publikováno v:
Diffusion fundamentals. 23(3):1-25
Mass transfer processes in which specific interactions with environments lead to complex diffusion patterns, such as the occurrence of transient sub-diffusive behaviors or of heterogeneous diffusion, were studied by means of two different experimenta
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Autor:
Kärger, Jörg
Publikováno v:
Diffusion fundamentals. 1(5):1-107
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https://ul.qucosa.de/id/qucosa%3A14509
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Autor:
Kärger, Jörg
Publikováno v:
Diffusion fundamentals. 2(78):1-24
With reference to molecular transport in manifold media of porous structure, a survey is given on the ample spectrum of diffusion phenomena under confinement. The presentation is mainly based on the evidence provided by pulsed field gradient NMR and
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