Influence of alkali metals on Pd/TiO2 catalysts for catalytic oxidation of formaldehyde at room temperature

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	Influence of alkali metals on Pd/TiO2 catalysts for catalytic oxidation of formaldehyde at room temperature
	Li, Yaobin; Zhang, Changbin; He, Hong; Zhang, Jianghao; Chen, Min
刊名	CATALYSIS SCIENCE & TECHNOLOGY
	2016-01
卷号	6 期号:7 页码:2289-2295
英文摘要	We previously observed that sodium (Na) addition had a dramatic promotion effect on Pd/TiO2 catalysts for formaldehyde (HCHO) oxidation. In this study, a series of alkali metal (Li, Na, K, Cs) doped Pd/TiO2 catalysts were prepared and tested for ambient temperature HCHO oxidation. The results showed that the doped alkali metals have a common promotion effect on the performance of the Pd/TiO2 catalysts for HCHO oxidation under ambient temperature, which followed the order K > Cs > Na > Li. X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), CO chemisorption, Transmission Electric Microscopy (TEM), temperature-programmed reduction by H-2 (H-2-TPR), X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption by O-2 (O-2-TPD) methods were used to characterize the alkali metal doped catalysts to investigate the mechanism of the alkali metal promotion effect. The results showed that a negatively charged and well-dispersed Pd species was induced and stabilized by alkali metal addition, which facilitates the activation of chemisorbed oxygen, and then enhances the performance of alkali metal doped Pd/TiO2 catalysts for room temperature HCHO destruction. The K-Pd/TiO2 catalyst in particular possessed the highest Pd dispersion degree with active sites, attributing to the best activity in ambient temperature HCHO oxidation.
收录类别	SCI
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35756]
专题	生态环境研究中心_大气污染控制中心
推荐引用方式 GB/T 7714	Li, Yaobin,Zhang, Changbin,He, Hong,et al. Influence of alkali metals on Pd/TiO2 catalysts for catalytic oxidation of formaldehyde at room temperature[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(7):2289-2295.
APA	Li, Yaobin,Zhang, Changbin,He, Hong,Zhang, Jianghao,&Chen, Min.(2016).Influence of alkali metals on Pd/TiO2 catalysts for catalytic oxidation of formaldehyde at room temperature.CATALYSIS SCIENCE & TECHNOLOGY,6(7),2289-2295.
MLA	Li, Yaobin,et al."Influence of alkali metals on Pd/TiO2 catalysts for catalytic oxidation of formaldehyde at room temperature".CATALYSIS SCIENCE & TECHNOLOGY 6.7(2016):2289-2295.