| 摘要 |
PURPOSE:To obtain gaseous mixture having desired ratio of H2 to CO optionally by using Pd alloy film together with methanol decomposition catalyst and adjusting the H2/CO ratio by changing the amt. of H2 to be withdrawn through the film. CONSTITUTION:A reactor housing a Pd alloy film for permeating H2 together with methanol decomposing catalyst in the inside is used in the process for obtd. gaseous H2 and gaseous CO by cracking methanol vapor catalytically on a catalyst, and the ratio of H2/CO of the gaseous mixture obtd. at one end of the reactor is adjusted optionally by changing the amt. of H2 to be withdrawn through the Pd alloy film. Preferred catalyst to be used is one which produces scarcely dimethyl ether, methane, CO2, etc., as by-products. Suitable reaction temp. is 250-500 deg.C taking influences on the active life of the catalyst and the strength of the catalyst, etc., and the thermal load of the material of the reactor into consideration.
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