Hydrogen production by oxidative steam reforming of methanol over Au/CeO2 catalysts

作者：Pojanavaraphan Chinchanop; Luengnaruemitchai Apanee^*; Gulari Erdogan

来源：Chemical Engineering Journal, 2012, 192: 105-113.

DOI：10.1016/j.cej.2012.03.083

• Oxidative steam reforming
• Methanol
• Hydrogen
• Au catalyst
• CeO2

The production of hydrogen by oxidative steam reforming of methanol (OSRM) was investigated over a series of Au/CeO2 catalysts prepared by deposition-precipitation. The optimum operating conditions over 5 wt% Au/CeO2 (calcined at 400 degrees C, GHSV = 30000 mL/h-g(cat) T = 300 degrees C, H2O/CH3OH molar ratio = 2/1, and O-2/CH3OH molar ratio = 1.25/1) could be suggested to obtain 100% methanol conversion and 24.5% hydrogen yield. Additionally, the Au catalyst having an average particle size of 10.04 nm and the highest amount of Au-0 species (active sites for the OSRM reaction) on the catalyst support exhibited the highest activity. Based on the stability observation, the catalyst exhibited high catalytic activity over a long period, even though catalyst deactivation caused by both coke formation and sintering was found.

• 出版日期2012-6-1