Materials Transactions Online

Materials Transactions, Vol.58 No.05 (2017) pp.782-789
© 2017 The Japan Institute of Metals and Materials

The Application of Etched Aluminum Wires as Catalyst Supports for Methanol Steam-Reforming

Hiromi Hiramatsu1, 2, Makoto Sakurai1 and Hideo Kameyama1

1Department of Chemical Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan
2Department of Development, Japan Capacitor Industrial Co., Ltd., Tokyo 197-0013, Japan

In the present work, we investigated the alternating current (AC) etching of aluminum wires with the aim of fabricating catalyst supports. This support material was found to possess a spongy surface layer that could be subsequently filled with γ-alumina by a combination of hydration and calcination. These support wires are easily fabricated at low cost, and could be mass produced continuously. The integrated structure of the catalyst produces a strong interconnection between the wire substrate and a thick catalyst layer on the wire. This work also demonstrated that the diffusion inside the catalyst layer can be controlled by varying the etched structure of the support layer. A micro-structured catalytic wall reactor concept was developed using these wires, situated parallel to one another within a tubular device, such that microchannels were present between the wires. The steam-reforming of methanol was assessed in this type of microreactor.

[doi:10.2320/matertrans.M2016454]

(Received 2016/12/20; Accepted 2017/02/06; Published 2017/04/25)

Keywords: microreactor, aluminum wire, etching, catalyst support, internal diffusion, methanol steam-reforming

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