Gas–liquid and gas–liquid–solid catalysis in a mesh microreactor

Abstract

A microstructured mesh contactor that can offer residence time of more than minutes is used for gas-liquid-solid hydrogenations and gas-liquid asymmetric hydrogenations. Applications for catalyst/chiral inductor screening and for kinetic data acquisition are demonstrated.

Design and fabrication of a structured catalytic reactor at micrometer scale: Example of methylcyclohexane dehydrogenation

“…ESCA analysis reveals an oxygen 1s shift at 531 eV comparable to that of a thermally treated boehmite powder, which confirms the nature of the washcoating layer after calcination. Platinum impregnation was done by dipping the samples for 3 h in a 1 g/L toluene solution of platinum acetylacetonate (from Strem Chemicals), drying at 100 8C, calcinating at 400 8C under air for 4 h and reducing under hydrogen at 400 8C for 2-4 h. A similar procedure was used for platinum or palladium deposition on an alumina layer for gas-liquid-solid hydrogenation in a micro-structured gasliquid mesh reactor [16].…”

Microstructured Reactors for Catalytic Reactions

“…The micromesh reactor was used for gas-liquid-solid hydrogenations and gasliquid asymmetric hydrogenations. Applications for catalyst/ chiral inductor screening and for kinetic data acquisition were demonstrated [112].…”

“…The MSR presented above for multiphase systems were designed for fast reactions. Recently, Abdallah et al [112] described a microstructured mesh contactor with residence times from few seconds up to hours (Fig. 16).…”

Microstructured Reactors for Multiphase Reactions: State of the Art

“…Abdallah et al 88 studied the heterogeneous hydrogenation of R-methylstyrene to cumene using mesh MSR. Two catalysts Pd/Al 2 O 3 and Pt/Al 2 O 3 were used.…”

“…Abdallah et al 88 carried out the well-known gas-liquid asymmetric hydrogenation of Z-methylacetamidocinnamate (mac) with rhodium chiral diphosphine complexes using the mesh microreactor. The reactor has two 100 µm deep cavities (100 µL) separated by a micromesh in which the upper cavity is fed with the reacting gas while the other, the reacting chamber, contains the reacting liquid.…”