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

Abstract : A silicon micro-structured reactor has been designed for gas-solid heterogeneous catalysis, in particular for the dehydrogenation of methylcyclohexane. Two types of catalyst deposition on silicon have been evaluated: the first consists of a washcoat deposition of a gamma-alumina layer followed by Pt impregnation, the second is a cathodic Pt film sputtering. The Pt/Al2O3 catalyst reveals a higher activity for this reaction and was selected for further investigation. Since the micro-structured reactor is composed of pillars of typical dimension 5 × 100 μm, a special washcoat method has been developed leading to the controlled deposition of a homogeneous gamma-alumina layer of thickness <1 μm. Because the dehydrogenation reaction is endothermic (204 kJ mol−1) and conducted at ca. 380 °C, heaters have been integrated using screen-printing methods. FEMLAB simulations have helped to integrate the hot reaction zone and a low temperature section for connectors (<200 °C) in a 10 × 30 mm chip.
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https://hal-emse.ccsd.cnrs.fr/emse-00431857
Contributor : Andrée-Aimée Toucas <>
Submitted on : Friday, November 13, 2009 - 12:29:55 PM
Last modification on : Wednesday, June 24, 2020 - 4:18:29 PM

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Marilyne Roumanie, Valérie Meille, Christophe Pijolat, Guy Tournier, Claude de Bellefon, et al.. Design and fabrication of a structured catalytic reactor at micrometer scale: example of methylcyclohexane dehydrogenation. Catalytis Todays, 2005, 110 (1-2), pp.164-170. ⟨10.1016/j.cattod.2005.09.013⟩. ⟨emse-00431857⟩

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