Recently, a new branch in the engineering design focused on the use of microreactor has received a huge scientific and industrial interest. The idea of chemical process miniaturisation in micro-structured reactors (channel width ranged between ten to several hundred µm) is mainly focused on process intensification and safety by providing high surface-to-volume ratio, high heat and mass transfer and isothermal operation. The aim of the present work was to develop a new catalytic microstructured reactor by filling the millimetres range channel with an array of carbon nanotubes. Such reactor allows a significant increase of the S/V ratio and eases the anchorage of the catalyst active phase through deposition onto oxygen functionalized CNTs materials. The carbon nanotubes arrays were generated by CCVD method with ferrocene as an iron-catalyst precursor and toluene as a carbon source [1]. The synthesis has been effectuated on the stainless steel plate with microchannel coated with a thin layer of SiO₂. The 2 mm thick CNTs carpet were strongly anchored onto the microchannel as no matter loss was observed after sonication for several hours. The (width x length x heigth 21 mm ´ 18 mm ´ 2 mm) channel can be filled completely with pattern of CNTs or the arrangement of CNTs can be controlled by lithography (hexagons) as well. The as-grown carbon nanotubes in the microreactor channel have subsequently been used as a nanoscopic support for the active phase. The higher catalytic efficiency was observed for CNTs-microreactor compared to the one obtained in microreactor without CNTs in the channel. Such results were attributed to the presence of the nanoscopic structure which favorize the contact surface between the reactants and the active sites.

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