Hydrogen production from methanol decomposition over Pt/Al_2O_3 and ceria promoted Pt/Al_2O_3 catalysts

摘要

We present the activities and selectivities of Pt/Al_2O_3-based catalysts in the production of hydrogen from methanol through catalytic decomposition.For the decomposition reaction,the Pt and Pd catalysts promoted by ceria exhibit similar activity reaching 100% conversion at approx 315 deg C.Promoting with ceria had a positive effect on activity and selectivity.Among all catalysts,the 9% Pt 10% CeCWAlTCK catalyst demonstrated the best activity.This catalyst compares favorably to a commercial copper-based catalyst.The hydrogen selectivity is exceptionally high at 99+%.In all experiments,we found that methane formation was not a major factor.