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Increased gas solubility in nanoliquids: Improved performance in interfacial catalytic membrane contactors by Marc Pera-Titus; Sylvain Miachon; Jean-Alain Dalmon is a Engineering article available to read on EtoBox.

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## Abstract The kinetics of gas‐liquid catalytic reactions can be strongly promoted when these are performed in interfacial catalytic membrane reactors instead of other three‐phase reactors such as slurry stirrers or trickle beds. The well‐defined gas‐liquid‐catalyst contact in this system avoiding diffusional limitations is usually argued as the main reason for such enhancement. In this work, using nitrobenzene hydrogenation as a model reaction, we propose that this increased catalytic performance might also be attributed, at least partially, to increased gas solubilities in mesoconfined solvents (or simply “nanoliquids”) in interfacial contactors overcoming the values predicted by Henry's Law. To support this hypothesis, we provide experimental evidence of a dramatic increase of H~2~ solubility in confined ethanol using mesoporous γ‐Al~2~O~3~ as confining solid. Gas‐liquid solubilities can be enhanced up to five times over the corresponding bulk values for nanoliquid sizes lower than 15 nm as long as the gas‐liquid interface is confined in a mesoporous array. In such a situation, the volume of the gas‐liquid interface is no longer negligible compared to the total volume of the co

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Author

Marc Pera-Titus; Sylvain Miachon; Jean-Alain Dalmon

Publisher

American Institute of Chemical Engineers; Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley (ISSN 0001-1541)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)