Enhanced Activity of Bimetallic Pd-Based Catalysts for Methane Combustion
Enhanced Activity of Bimetallic Pd-Based Catalysts for Methane Combustion
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DOI：
10.1007/s10562-008-9528-z
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发表时间：
2008-06
影响因子：
2.8
通讯作者：
Yanan Li;Yongbing Xie;Chang‐jun Liu
中科院分区：
文献类型：
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作者：
Yanan Li;Yongbing Xie;Chang‐jun Liu
本文采用辉光放电等离子体处理和热处理相结合的方法制备了含Ag、Cu、Co和Ni的Pd/Ag催化剂。X射线光电子能谱（XPS）分析证实了等离子体处理可以有效地还原Pd 2+。等离子体形成的Pd簇的煅烧增强了被确定为甲烷燃烧的活性物种的PdO的形成。与传统的催化剂相比，在相同的温度下，所有的等离子体制备的样品显示出活性的增强。在所考察的催化剂中，Pd-Ag/HZSM-5催化剂表现出最好的甲烷燃烧活性。
In this work, the bimetallic Pd catalysts containing Ag, Cu, Co and Ni were prepared via the glow discharge plasma treatment followed by calcination thermally. The X-ray photoelectron spectroscopy (XPS) analysis confirms that the plasma treatment can reduce Pd2+effectively. The calcination of the plasma formed Pd clusters enhances the formation of PdO that was identified as the active species for methane combustion. Compared to the conventional catalysts, all the plasma prepared samples show an enhancement in the activity at the same temperature. Among the investigated catalysts, the Pd–Ag/HZSM-5 sample exhibits the best activity for methane combustion.