Non-syngas direct steam reforming of methanol to hydrogen and carbon dioxide at low temperature

Kai Man Kerry Yu, Weiyi Tong, Adam West, Kevin Cheung, Tong Li, George Smith, Yanglong Guo and Shik Chi Edman Tsang ()
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Kai Man Kerry Yu: Wolfson Catalysis Centre, University of Oxford
Weiyi Tong: Wolfson Catalysis Centre, University of Oxford
Adam West: Wolfson Catalysis Centre, University of Oxford
Kevin Cheung: Wolfson Catalysis Centre, University of Oxford
Tong Li: University of Oxford
George Smith: University of Oxford
Yanglong Guo: Research Institute of Industrial Catalysis, East China University of Science & Technology
Shik Chi Edman Tsang: Wolfson Catalysis Centre, University of Oxford

Nature Communications, 2012, vol. 3, issue 1, 1-7

Abstract: Abstract A non-syngas direct steam reforming route is investigated for the conversion of methanol to hydrogen and carbon dioxide over a CuZnGaOx catalyst at 150–200 °C. This route is in marked contrast with the conventional complex route involving steam reformation to syngas (CO/H2) at high temperature, followed by water gas shift and CO cleanup stages for hydrogen production. Here we report that high quality hydrogen and carbon dioxide can be produced in a single-step reaction over the catalyst, with no detectable CO (below detection limit of 1 ppm). This can be used to supply proton exchange membrane fuel cells for mobile applications without invoking any CO shift and cleanup stages. The working catalyst contains, on average, 3–4 nm copper particles, alongside extremely small size of copper clusters stabilized on a defective ZnGa2O4 spinel oxide surface, providing hydrogen productivity of 393.6 ml g−1-cat h−1 at 150 °C.

Date: 2012
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DOI: 10.1038/ncomms2242

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