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ProMiSe 2 – Control of local concentration conditions for optimization of the hydrogen peroxide direct synthesis in membrane microreactors

Project description

Within the DFG-funded Research Unit (FOR2383) „Erfassung und Steuerung dynamischer lokaler Prozesszustände in Mikroreaktoren mittels neuer In-situ-Sensorik (ProMiSe)“, we have been investigating the electrochemical monitoring of the hydrogen peroxide direct synthesis membrane microreactors for over three years. Electrochemical sensors allow the continuous monitoring of analyte concentrations in aqueous systems, with high spatial and temporal resolution. Microreactors enable the direct chemical synthesis of the “green chemistry” oxidant hydrogen peroxide from hydrogen and oxygen. Such compact process plants allow the efficient in-situ-synthesis of numerous substances, because miniaturised channels possess excellent transfer properties for mass and heat. However, the local processes within the microreactor are often not sufficiently understood, particularly for multi-phase systems. In the second phase of funding, we will advance electrochemical measurement procedures for the in situ monitoring of hydrogen, oxygen and hydrogen peroxide. The sensor technology will be expanded towards the measurement in 3D, in order to better resolve the spatial distribution of the reactants. New electrochemical measurement principles will allow the expansion of possible media in the reactor, improve long-term stability of the sensors, and enable the detection of gas bubbles. An automated measurement will, in combination with a new reactor concept, allow the model-based control of the synthesis in a connected reactor.

Start/End of project

01.08.2019 until 31.07.2022

Project manager

Dr. Andreas Weltin; Prof. Dr. Gerald Urban

Contact person

Dr. Andreas Weltin
Phone:+49 (0) 761 / 203 7263


Prof. Dr.-Ing. Roland Dittmeyer, Institut für Mikroverfahrenstechnik (IMVT), Karlsruher Institut für Technologie


Deutsche Forschungsgemeinschaft (DFG), Forschergruppe FOR 2383
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