We are aware of an issue with certificate availability and are working diligently with the vendor to resolve. The vendor has indicated that, while users are unable to directly access their certificates, results are still being stored. Certificates will be available once the issue is resolved. Thank you for your patience.

(476bl) Steam Reforming of Methanol Using Supported Mo2c Catalysts

Lin, S. S., Northwestern University
Thomson, W. J., Washington State University

Two supported molybdenum carbide catalysts, Mo2C supported on γ-alumina (Mo2C/γ-Al2O3) and zirconia (Mo2C/ZrO2), were investigated as an alternative catalyst for steam reforming of methanol. The catalysts were prepared by a temperature-programmed reaction (TPR) method, and it was found that the supported Mo2C catalysts are superior to an unsupported catalyst, with Mo2C/ZrO2 having a higher hydrogen yield than Mo2C/γ-Al2O3. It is hypothesized that the zirconia support plays a synergistic role during methanol steam reforming, probably by altering the reaction pathway. The suppression of methanation and the promotion of the water-gas shift (WGS) reaction by the interaction between molybdenum carbide and the zirconia support resulted in the increased hydrogen yield. The optimum operating conditions were observed at a steam-to-carbon ratio of one and 400 oC. At these conditions, the reforming activity remained stable for longer than ten hours.