| Pd－Cu／Al_2O_3双金属及其单金属催化剂的TPR特性 |
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| 引用本文： | 施介华,徐慧珍,过中儒.Pd－Cu／Al_2O_3双金属及其单金属催化剂的TPR特性[J].石油化工,1994(7). |
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| 作者姓名： | 施介华 徐慧珍 过中儒 |
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| 作者单位： | 浙江工学院化工系 |
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| 摘 要： | 采用程序升温还原技术研究Ｐｄ－Ｃｕ／Ａｌ＿２Ｏ＿３双金属及其单金属催化剂的还原特性以及热处理气氛和温度对Ｐｄ－Ｃｕ／Ａｌ＿２Ｏ＿３双金属催化剂还原性能的影响。发现不同金属负载量的Ｐｄ／Ａｌ＿２Ｏ＿３和Ｃｕ／Ａｌ＿２Ｏ＿３催化剂的还原性能有明显的差异，Ｐｄ－Ｃｕ／Ａｌ＿２Ｏ＿３催化剂的ＴＰＲ峰形和峰位与相应的单金属催化剂的ＴＰＲ曲线亦有明显的差异，其还原峰位发生位移。同时还发现热处理气氛对Ｐｄ－Ｃｕ／Ａｌ＿２Ｏ＿３催化剂的还原性能有明显的影响。讨论了负载于Ａｌ＿２Ｏ＿３载体上的Ｐｄ－Ｃｕ双金属及其单金属催化剂在还原过程中金属与载体、金属与金属间的相互作用以及热处理条件对其还原性能的影响。
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| 关 键 词： | 程序升温还原，Pd－Cu／Al＿2O＿3催化剂，Pd／Al＿2O＿3催化剂，Cu／Al＿2O＿3催化 |
The TPB Characteristics of Catalysts of Pd,Cu and Pd-Cu Supported on Al_2O_3 |
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| Shi Jiehua, Xu Huizhen and Cuo Zhongru.The TPB Characteristics of Catalysts of Pd,Cu and Pd-Cu Supported on Al_2O_3[J].Petrochemical Technology,1994(7). |
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| Authors: | Shi Jiehua Xu Huizhen and Cuo Zhongru |
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| Abstract: | The reducibility of the Al_2O_3-supported Pd-Cu bimetallic and the individual mono-metallic catalysts and the effect of thermal treatment on the reducibility of Pd-Cu supported Al_2O_3 have been investigated with the temperature-programmed reduction (TPR)technique. It is found that different TPR profiles are produced with different metal contents. And there is obvious difference between the TPR profiles of Al_2O_3-supported Pd-Cu bimetallic and the mono-metallic catalysts. Displacement in reduction peaks is also observed.The results showed that the reducibility of Pd-Cu supported on Al_2O_3 is affected by variation inthe thermal treatment of gases. |
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| Keywords: | temperature-programmed reduction(TPR) Pd/Al_2O_3 catalyst Cu/Al_2O_3 catalyst Pd-Cu/Al_2O_3 catalyst interaction |
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