Process for initiation of oxidative steam reforming of methanol at room temperature
OwnerYuh-Jeen HUANG, Chuin-Tih Yeh +2inventors
InventorsYuh-Jeen HUANG, Chuin-Tih Yeh, Chien-Te Ho, Liang-Chor Chung
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Abstract
A self-started OSRM (oxidative steam reforming of methanol) process at room temperature for hydrogen production is disclosed. In the process, an aqueous methanol and oxygen are pre-mixed. The mixture is then fed to a Cu/ZnO-based catalyst to initiate an OSRM process at room temperature. The temperature of the catalyst bed, with suitable thermal isolation, may be raised automatically by the exothermic OSRM to enhance the conversion of methanol. A hydrogen yield of 2.4 moles per mole methanol from the process may be obtained.
Claims15
A self-started OSRM process at room temperature for hydrogen production, comprising:
- pre-mixing an aqueous methanol and oxygen to obtain a mixture;
- feeding the mixture to a Cu/ZnO-based catalyst at room temperature, wherein the Cu/ZnO-based catalyst comprises a CuPd/ZnO catalyst or a CuRh/ZnO catalyst;
- catalyzing an OSRM (oxidative steam reforming of methanol) process and raising a reaction temperature;
- and
- yielding hydrogen at the reaction temperature substantially equal to or greater than 140° C., wherein the hydrogen contains substantially smaller than or equal to 1% CO by mole.
A catalyst used in a self-started OSRM process at room temperature for hydrogen production, comprising:
- a Cu/ZnO-based catalyst comprising a CuPd/ZnO catalyst or a CuRh/ZnO catalyst, wherein
- the Cu/ZnO-based catalyst is a supported copper catalyst prepared with a co-precipitation method;
- a Cu content in the Cu/ZnO-based catalyst is substantially between 10% and 35% (w/w);
- and
- a ZnO content in the Cu/ZnO-based catalyst is substantially greater than 60.0% (w/w).
Dependencies are inferred from the claim text.