Structured Autothermal Methanol Reformer

1 Autothermal Methanol Reforming 1 [AMR 1] Micro Structured Autothermal Methanol Reformer 

The catalyst coating was reduced in a mixture of 10% hydrogen in nitrogen for 2 h at 400 °C prior to testing. The S/C ratio was 1.2 and the molar oxygen to methanol ratio was 0.3 and higher for the experiments, which were performed at reaction temperatures between 300 and 450 °C and a GHSV of 7170 h 1. 

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Autothermal Methanol Reforming 2 [AMR 2] Micro Structured String Reactor for Autothermal Methanol Reforming... 

Chen et al. [36] performed a comparison of micro structured steel and aluminum plates with a conventional monolith by varying the GHSV. Full conversion could be maintained for autothermal methanol reforming in the micro structures up to a GHSV of 40 000h 1, whereas conversion dropped to 80% at 20 000h 1 at the monolith. Even at 186 000 h, still 95% conversion could be achieved in the stainless-steel micro reactor. No significant performance differences were observed between the steel and aluminum plates. 

Schuessler et al. [85] applied sintering of copper and aluminum powder to form micro structured plates for an integrated autothermal methanol reformer (see Section 2.7.2). The powders were compressed before sintering at a pressure of 1000 bar. Sintering of copper is performed at temperatures between 500 and 700 °C, which allows for the bonding of the plates in a second sintering step (see the next section). 

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