李 阳 ,邱鹏志 ,王博威 ,曾钰耀 ,陈立功 ,闫喜龙
AuthorsHTML:李 阳 ^{1, 2, 3}，邱鹏志 ^{1, 2}，王博威 ^{1, 2, 3}，曾钰耀 ^{1, 2}，陈立功 ^{1, 2, 3}，闫喜龙 ^{1, 2, 3}
AuthorsListE:Li Yang,Qiu Pengzhi,Wang Bowei,Zeng Yuyao,Chen Ligong,Yan Xilong
AuthorsHTMLE:Li Yang^{1, 2, 3}，Qiu Pengzhi^{1, 2}，Wang Bowei^{1, 2, 3}，Zeng Yuyao^{1, 2}，Chen Ligong^{1, 2, 3}，Yan Xilong^{1, 2, 3}
Unit:1. 天津大学化工学院，天津 300350；
2. 天津化学化工协同创新中心，天津 300072；
3. 天津市功能精细化工工程研究中心，天津 300072

Unit_EngLish:1. School of Chemical Engineering and Technology，Tianjin University，Tianjin 300350，China；
2. Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)，Tianjin 300072，China；
3. Tianjin Engineering Research Center of Functional Fine Chemicals，Tianjin 300072，China

Abstract_Chinese:针对 CuO(20%)/γ-Al2O3 催化剂催化燃烧性能的欠缺，通过共沉淀捏合法制备了 CuO(20%)/CexAl100-xOy (x＝1，3，5，7，10，12)系列催化剂，并通过 XRD、BET、XPS、H2-TPR、TEM 等系列表征方法对催化剂进行了 表征，研究了 Ce 掺杂对催化燃烧效果的影响．表征结果表明，Ce 掺杂可以促进催化剂表面 CuO 的分散，为反应提 供更多活性位点，增强催化剂的低温还原性，并提供更多的表面吸附氧，这些都有利于催化燃烧活性的提高．同 时，所有催化剂均在以典型的 VOC 甲苯作为底物的催化燃烧实验中进行了评估，其中 CuO(20%)/Ce7Al93Oy 表现出 最高的催化燃烧活性，与 CuO(20%)/γ-Al2O3 相比，其 T90 降低了约 30 ℃．比较其他结果，掺杂量低时，催化剂改 性结果较差；而在掺杂量过多时，反而会严重损害催化剂性质，如催化剂中的 γ-Al2O3 骨架可能会坍塌，影响催化 燃烧活性．这可以证明 Ce 掺杂可以有效提高催化剂的燃烧活性，而合适的 Ce 掺杂量对催化剂改性是很关键的．同 时，还对所得的最优催化剂进行了稳定性和普适性的测试，并得出了较好的结果．综上，本研究集中于掺杂量对催 化剂的影响，为后续研究提供了理论基础．
Abstract_English:To improve the catalytic combustion activity of CuO(20%)/γ-Al2O3，CuO(20%)/CexAl100-xOy(x＝1，3， 5，7，10，12)catalysts were prepared by coprecipitation-kneading method. They were characterized by serial characterization methods，such as XRD，BET，XPS，H2-TPR，TEM. The characterization results showed that the Ce doping could promote CuO dispersion，provide more active sites，strengthen the low temperature reducibility and provide more oxygen adsorbed on the surface，which is beneficial for the combustion activity of the catalyst. Meanwhile，all catalysts have been evaluated for catalytic combustion of toluene，a typical VOC. Among them， CuO(20%)/Ce7Al93Oy exhibited the highest catalytic combustion activity that T90 reduced by about 30℃ compared to CuO(20%)/γ-Al2O3. It indicates that Ce doping can effectively improve the combustion activity of the catalyst. It is worth noting that an adequate amount of Ce doping is important for the modification of the catalyst. First，the modification effect is insufficient when the amount of doping is low. But when the amount of doping is excessive，the γ- Al2O3 skeleton can collapse，resulting in damage to catalytic activity. In addition，we obtained satisfactory results in tests of stability and universality of the catalysts. Therefore，this study focused on the effect of the amount of dopingon catalysts，providing a theoretical basis for further research.
Keyword_Chinese:催化燃烧；铜基；铈改性；掺杂量的影响
Keywords_English:catalytic combustion；copper-based；Ce-modified；effect of doping content

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