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~今天给大家分享的是2014年7月份 《applied catalysis b: environmental》上发表的一篇名为：self-sustained combustion of carbon monoxide promoted by the cu-ce/zsm-5 catalyst in co/o2/n2 atmosphere

文章摘要如下：

the cu/zsm-5, ce/zsm-5 and cu-ce/zsm-5 catalysts were prepared and characterized in this investigation and the catalytic activity of carbon monoxide (co) combustion under these catalysts was determined by temperature-programmed oxidation. the activity for the co combustion follows the decreasing order: cu-ce/zsm-5 > cu/zsm-5 > ce/zsm-5, indicated by lower ignition, light-off, extinction temperature and broader hysteresis determined via both heating and cooling feeding process. the co adsorbed on the copper sites to form cu –co complexes, monodentate and bidentate carbonates was considered to be the crucial step for co catalytic combustion. at the co concentration ≥ 5 vol.%, the co self-sustained combustion was achieved over the cu-ce/zsm-5 catalyst. one reason is due to formation of cu2 ions incorporated into cerium oxides, which are more reducible than the copper clusters, minicrystals and bulk cuo particles. another reason is attributable to the formation of ce4 /ce3 redox couple, which facilitates oxygen transport on the catalyst surface.

该文章中材料表征采用的是美国麦克仪器autochem 2920

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