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The gas phase direct hydroxylation of benzene into phenol with hydrogen and oxygen, as initially described by Niwa in 2002, was realized in a newly developed double-membrane reactor. In the concept described by Niwa, a dense Pd membrane is used for the (safe) dosage of dissociated hydrogen species into the tubular reaction zone, where it reacts with gas phase oxygen to form surface species capable of directly converting benzene into phenol in a single-step process.

Pd-Membran --- Katalyse --- Phenol --- Benzol

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We have developed a microfluidic two-layered channel system based on polycarbonate to investigate the transmigration of cancer cells under flow conditions and defined shear rate using live cell microscopy. The two layers are separated by a porous membrane with an endothelial monolayer on top of the membrane to mimic the blood vessel wall. To extend the measuring capabilities of our microfluidic chip, gold electrodes were structured on the membrane using optical lithography and chemical etching.

membrane --- Krebszellen --- SensorikCancer cell --- Metastasierung --- Mikrofluidik --- Blutgefäß --- sensors --- Membran --- Blood vessel --- Impedanz --- microfluidic --- Impedance

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Polymer-Elektrolytmembran-Brennstoffzelle --- Technische Membran --- Wasserstoffenergietechnik --- 577.352 --- Membrane biophysics --- 577.352 Membrane biophysics --- Membranes (Technology) --- Artificial membranes --- Separation (Technology) --- Technology