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studying the behavior of these liquids in the pores. On the one hand, relaxation measurements are used to characterize the interactions of the liquids with the pore walls. On the other hand, Pulsed Field Gradient [...] mixtures in Fischer-Tropsch synthesis. For example, the entrapment of individual products by transport pores in the catalyst structures can be prevented. NMR analysis of mass transfer during Fischer-Tropsch [...] Gradient (PFG) measurements can be used to characterize the diffusion behavior of the molecules in the pores and thus provide information about mass transport during the reactions by measurements at room temperature
Section: FB4
(< 2 nm), but little is known about the mechanisms of their influence on the gas flow in larger pores, when surface diffusion is neglected. Recent studies show that even in mesopores of 20 nm and above [...] Benjamin Besser, Universität Bremen Schematic illustration of a gas molecule propagating through pores without and with an alkyl-functionalization. enlarge image Especially for gas separation and chro [...] the influence of functionalized surfaces, we prepare mesoporous (inorganic) membranes with monomodal pore size distributions, serving as model structures. The membrane surface is then functionalized using
thermal decomposing mineral. The energy is provided by the molten residue material. A homogeneous pore size distribution is depending first on the material itself and second on the blending of molten slag
material the electric field is disturbed resulting in field inhomogeneities that pull particles to the pore wall, where they stay until the electric field is switched off. To prevent mechanical trapping the [...] the used particles (diameter: 0.2 µm – 10 µm) are at least one order of magnitude smaller than the pore diameter of the porous structures. This allows switchable filtration with low pressure loss and negligible
ting the interdependencies of porosity, permeability, fluid flow rates as well as pore space geometry and their feedback relationship in the course of dissolution and prec
Section: FB5
the Advanced Ceramics Group, where she simultaneously coordinated the DFG Research Training Groups PoreNet (GRK 137) and later MIMENIMA (GRK 1860), in which her research was also embedded. Her research
Section: Sites
of porosity and permeability. Little is known about these feedbacks between reaction sequence and pore space distribution, and this has repeatedly emerged as a problem in the assessment and prediction [...] with corrosive or supersaturated solutions. The reactions thus initiated modify the geometry of the pore space. These changes are imaged by computer tomography ( µ-CT ), while time series analyses of the
found a porous, sponge-like internal structure with elaborate channels, connected to the surface via pores. This channel system reacts different to deformation than a homogenous mass of cytoplasm and has to
Section: FB1
coatings based on a zinc(ii) phthalocyanine derivative immobilized on nanoporous gold leafs with various pore sizes D. Steinebrunner, G. Schnurpfeil, D. Wohrle, A. Wittstock, RSC Adv. 2020 , 10 , 53-59. Impact
Section: FB2