eO2改性对CuO/γ-Al2O3氧化还原可逆性的影响
Effect of CeO2 Modification on the Redox Reversibility of CuO/γ-Al2O3
本文采用TPR1-TPO-TPR2对CuO/γ-Al2O3 和CuO-CeO2/γ-Al2O3样品的氧化还原可逆性进行了表征。结果表明，对于分别在400 ℃和800 ℃下焙烧的样品，用CeO2改性过的CuO/γ-Al2O3的氧化还原可逆性均明显优于未改性样品，具体表现为改性后样品的TPR1和TPR2峰形相似，还原峰位置偏差不大，TPR1和TPR2的耗氢量也比较接近。此外对氧化还原可逆性和催化活性以及催化剂寿命之间的关系进行了讨论。
PR1-TPO-TPR2 was used to characterize the redox reversibility of CuO/γ-Al2O3 and CuO-CeO2/γ-Al2O3 samples. The result indicates that, as calcined at 400 oC and 800 oC, the CeO2 modified samples have better redox reversibility than CuO/γ-Al2O3, for the modified samples have more similar peak shapes, reduction temperatures and H2 consumptions in TPR1 and TPR2. Relationship between redox reversibility and catalytic properties (activity and longevity) is discussed.
万海勤、董林、陈懿、于武江、李晓伟、朱捷
化学非金属元素化学工业、非金属无机化合物化学工业金属元素无机化合物化学工业
eO2改性，TPR，可逆性，催化活性
eO2 modified TPR reversibility catalytic activity
万海勤,董林,陈懿,于武江,李晓伟,朱捷.eO2改性对CuO/γ-Al2O3氧化还原可逆性的影响[EB/OL].(2006-11-24)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/200611-717.点此复制
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