Abstract:
This study carries out the methanol steam reforming to produce hydrogen with the simulated engine exhaust heat over non-noble Cu-Zn/Al
2O
3-ZrO
2 catalyst.An apparatus was designed to complete catalytic reforming experiments,and multiple parameters were adjusted to improve the hydrogen yield and find the better reforming method.The results showed that the reaction temperature was the key factor in the methanol steam reforming.The hydrogen volume fraction in syngas increased with the increase of temperature.Meanwhile,the gas hourly speed velocity could affect the residence time directly of methanol vapor on the surface of the catalysts.Therefore,the effect of reforming was better when the gas hourly speed velocity achieved to minimum: 376 h
-1.And the optimal water methanol molar ratio and feedstock flow rate were 6∶ 1 and 0.4 mL/min,respectively.When the reaction temperature was 600 ℃,the hydrogen volume fraction in the reformed gas could achieve to 56.61% at the best conditions.Thus,the steam reforming of methanol over Cu-Zn/Al
2O
3-ZrO
2 catalyst may become a promising and practical way for producing hydrogen on vehicles.