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Citation: GU Hong, XU Bo-Lian, ZHOU Jing, LI Yuan-Zhi, FAN Yi-Ning. Catalytic Properties of Supported Pd/TiO₂ and Pd-Ag/TiO₂ Catalysts for Selective Hydrogenation of Acetylene[J]. Acta Physico-Chimica Sinica, ;2006, 22(06): 712-715. doi: 10.3866/PKU.WHXB20060613 shu

Catalytic Properties of Supported Pd/TiO₂ and Pd-Ag/TiO₂ Catalysts for Selective Hydrogenation of Acetylene

1.
Key Laboratory for Mesoscopic Chemistry, Ministry of Education, Jiangsu Provincial Key Laboratory of Nanotechnology, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China

Received Date: 18 November 2005
Available Online: 31 May 2006

The structure and catalytic properties of supported Pd/TiO2 and Pd-Ag/TiO2 catalysts for selective hydrogenation of acetylene have been studied by using microreactor tests combined with temperature-programmed reduction (TPR), X-ray diffraction (XRD), infrared spectroscopy of adsorbed carbon monoxide (CO-IR), and electronic paramagnetic resonance (EPR). The results indicate that the Pd/TiO2 catalyst exhibits better catalytic performance than Pd/γ-Al2O3 catalyst for selective hydrogenation of acetylene, which can be correlated to the strong metal-support interaction (SMSI) between Pd and TiO2 in the Pd/TiO2 catalyst. Adding Ag component to Pd/TiO2 catalyst results in formation of Pd-Ag alloy, leading to an increase in selectivity of acetylene hydrogenation to ethylene, but a decrease in the activity of acetylene hydrogenation.
- Pd;Pd-Ag alloy;Titania;Acetylene;Selective catalytic hydrogenation
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沈阳化工大学材料科学与工程学院沈阳 110142

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Catalytic Properties of Supported Pd/TiO2 and Pd-Ag/TiO2 Catalysts for Selective Hydrogenation of Acetylene

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通讯作者: 陈斌, bchen63@163.com

Catalytic Properties of Supported Pd/TiO₂ and Pd-Ag/TiO₂ Catalysts for Selective Hydrogenation of Acetylene