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Partial oxidation of methanol on Au-Pd/ceria

机译:甲醇在Au-Pd /氧化铈上部分氧化

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摘要

Partial oxidation of methanol over Au/CeO2 and Au-Pd/CeO2 catalysts is reported here.The catalysts have been characterized by using X-ray diffraction,temperature programmed reduction and temperature-programmed desorption of methanol.The studies show that the Au-Pd alloy particles are formed,and Au dispersion on CeO2 support is promoted owing to the addition of Pd to the Au-Pd/CeO2 bimetallic catalyst.Compared with Au/CeO2 catalyst,the Au-Pd./CeO2 catalyst has larger active surface area and stronger interaction between Au-Pd and support.The desorption temperature of methanol is low.The Au-Pd/CeO2 catalyst reduced by H2 before the reaction shows higher methanol conversion and hydrogen selectivity,which suggests that the metallic states of Au,Pd and Au-Pd play an important role in the partial oxidation of methanol.
机译:本文报道了Au / CeO2和Au-Pd / CeO2催化剂上甲醇的部分氧化。通过X射线衍射,程序升温还原和程序升温解吸对催化剂进行了表征。研究表明Au-Pd形成合金颗粒,并通过向Au-Pd / CeO2双金属催化剂中添加Pd促进了Au在CeO2载体上的分散。与Au / CeO2催化剂相比,Au-Pd。/ CeO2催化剂具有更大的活性表面积和Au-Pd与载体之间的相互作用更强。甲醇的解吸温度低。反应前经H2还原的Au-Pd / CeO2催化剂具有较高的甲醇转化率和氢选择性,表明Au,Pd和Au的金属态-Pd在甲醇的部分氧化中起重要作用。

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