Abstract
This work presents the application of microfabricated reactors to photochemical reactions. Two fabrication schemes of microreactors were realized for the integration of the reaction and the detection modules: coupling individually packaged chips, and monolithic integration of the two functions. In the latter scheme, we have successfully bonded two quartz wafers and a DRIE-patterned silicon wafer by a Teflon™-like perfluoropolymer (CYTOP™) at a low temperature (160°C). We studied the pinacol formation reaction of benzophenone in isopropanol as a model reaction to evaluate the performance of the microreactors. The reaction was continuously monitored by online UV spectroscopy. The data illustrated that controlling the flow rate of the reactant, or equivalently the residence time and irradiation time, is a viable method for controlling the extent of reaction. For photochemical reactions, miniaturization enables process intensification — the reaction is initiated on-chip, but is completed in an off-chip storage device with no further complications.
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© 2001 Springer-Verlag Berlin Heidelberg
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Lu, H., Schmidt, M.A., Jensen, K.F. (2001). Photochemical Reactions and Online Product Detection in Microfabricated Reactors. In: Matlosz, M., Ehrfeld, W., Baselt, J.P. (eds) Microreaction Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-56763-6_19
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DOI: https://doi.org/10.1007/978-3-642-56763-6_19
Publisher Name: Springer, Berlin, Heidelberg
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