| Pt、Pd及其双金属催化剂表面氧性能与催化活性的研究 |
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| 引用本文： | 周仁贤,郑小明.Pt、Pd及其双金属催化剂表面氧性能与催化活性的研究[J].石油化工,1995(5). |
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| 作者姓名： | 周仁贤 郑小明 |
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| 作者单位： | 杭州大学催化研究所 |
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| 摘 要： | 用ＴＰＤ－ＭＳ及ＣＯ氧化活性测定等方法研究了Ｐｔ／Ａｌ＿２Ｏ＿３、ｐｄ／Ａｌ＿２Ｏ＿３及Ｐｔ－Ｐｄ／Ａｌ＿２Ｏ＿３催化剂上表面氧的脱出－恢复性能及催化活性。结果表明，Ｐｔ、Ｐｄ单金属催化剂上的表面氧随金属负载量增加，氧脱附峰面积增大，起脱温度降低，催化氧化活性提高。双金属催化剂上的表面氧性质与单金属催化剂的不同，两种金属间可能发生相互作用，促进各自的氧化还原性能：随Ｐｄ／Ｐｔ比增加，脱附峰面积明显增大，催化活性也提高，催化活性与催化剂表面氧吸脱附性能有密切的联系。
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| 关 键 词： | Pt－Pd／Al＿2O＿3催化剂，氧化，氧脱出－恢复 |
Studies of Surface Oxygen Properties and Catalytic Activities of Pt,Pd and Pt-Pd Catalysts |
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| Zhou Renxian and Zheng Xiaoming.Studies of Surface Oxygen Properties and Catalytic Activities of Pt,Pd and Pt-Pd Catalysts[J].Petrochemical Technology,1995(5). |
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| Authors: | Zhou Renxian and Zheng Xiaoming |
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| Abstract: | The oxidation activities for CO and the surface oxygen properties of alumina- supportedPt,Pd and Pt-pd bimetallic catalysts have been studied.The resulis indicated that thesurface oxygen properties of catalysts were closely reiated to their catalytic activities.InPt-pd bimetallic catalysts, Pt metal interacted with Pd,which promoted the desorption andrenewal of oxygen on them. Thus,it inereased the oxidation activity for CO. |
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| Keywords: | Pt- Pd/Al_2O_3 catalyst oxidation behavior of desorption and renewal of oxygen |
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