Cu supported on ZnAl-LDHs precursor prepared by in-situ synthesis method on γ-Al2O3 as catalytic material with high catalytic activity for methanol steam reforming |
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Authors: | Jianping He Zhanxu Yang Lei Zhang Yue Li Liwei Pan |
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Affiliation: | 1. College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, Liaoning, China;2. School of Foreign Languages, Liaoning Shihua University, Fushun 113001, Liaoning, China;3. College of Environmental and Chemical Engineering, Dalian University, Dalian 116622, Liaoning, China |
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Abstract: | A novel catalyst precursor ZnAl-LDHs/γ-Al2O3 was prepared by in-situ synthesis method, and the copper was supported on calcined hydrotalcite catalyst precursor by wet impregnation. The correlation between the structure and the catalytic activity for methanol steam reforming was studied by XRD, SEM, TPR, chemisorption N2O, IR and N2 adsorption techniques. The results showed that the ZnAl-LDHs was successfully synthesized by in-situ synthesis method on γ-Al2O3 and the copper mass fraction had a great effect on the interactions between support and copper species. Furthermore, the catalyst reducibility and copper surface area evidently influenced catalytic activity for methanol steam reforming. The 10% Cu/γ-Al@MMO exhibited the best catalytic activity, that was, the methanol conversion was 99.98% and the CO concentration was only 0.92% at 300 °C in hydrogen production by methanol steam reforming. |
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Keywords: | Methanol steam reforming Hydrogen ZnAl-LDHs In-situ synthesis |
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