| 载体预处理及焙烧温度对CuO/γ-Al_2O_3催化剂的影响 |
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| 引用本文： | 黄星亮,殷慧龄. 载体预处理及焙烧温度对CuO/γ-Al_2O_3催化剂的影响[J]. 石油化工, 1993, 0(8) |
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| 作者姓名： | 黄星亮 殷慧龄 |
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| 作者单位： | 石油大学石油化工学部，石油大学石油化工学部 北京 100083，北京 100083 |
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| 摘 要： | 考察了载体预焙烧和La_2O_3改性及焙烧温度对CuO/γ-Al_2O_3催化剂的影响。结果表明,随着催化剂焙烧温度的升高,CuO与Al_2O_3之间的固相反应加强,CO氧化活性下降。γ-Al_2O_3经过高温预焙烧后,可减弱CuO与Al_2O_3之间的相互作用。La_2O_3对γ-Al_2O_3载体改性后,降低了催化剂的CO氧化活性。XPS和DSC结果表明La_2O_3的存在稳定了催化剂表面上的Cu以Cu~(2+)状态存在,阻碍了CuO在CO氧化反应中的还原氧化循环。
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| 关 键 词： | CuO/r-Al_2O_3 催化剂 |
Effect of the Pre-Treatment of γ-Al_2O_3 Support and Calcination Temperature on CuO-Supported Catalysts |
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| Huang Xing liang and Yin Huiling. Effect of the Pre-Treatment of γ-Al_2O_3 Support and Calcination Temperature on CuO-Supported Catalysts[J]. Petrochemical Technology, 1993, 0(8) |
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| Authors: | Huang Xing liang and Yin Huiling |
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| Abstract: | Effects of pre-calcination and La_2O_3 modification of γ-Al_2O_3 and calcination temperature on CuO-supported catalysts were investigated by DTG-TPR, XRD and XPS. It is found that although the high-temperature calcination of γ-Al_2O_3 decreases the BET surface area of γ-Al_2O_3, the amount of reducible CuO and activity of CO oxidation of CuO-supported catalysts increase. La_2O_3 modification of γ-Al_2O_3 support increases the BET surface area and amount of reducible CUO of CuO/La-γ-Al_2O_3 catalyst, but the activity of CuO/La-γ-Al_2O_3 catalyst decreases. |
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| Keywords: | CuO/γ-Al_2O_3 catalysts |
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