Citation: XIAO Yi-Hong, XIA Xiao-Ying, YANG Yan-Ling, CAI Guo-Hui, ZHENG Yong, WEI Ke-Mei. Effect of Surface Basicity of Ceria Zirconia Solid Solution on Sintering Character of Pd[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(6): 1129-1134. doi: 10.3969/j.issn.1001-4861.2013.00.152 shu

Effect of Surface Basicity of Ceria Zirconia Solid Solution on Sintering Character of Pd

1.
National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002 China

Received Date: 28 December 2012
Available Online: 28 January 2013
Fund Project: 福建省工业科技重大项目(2010H6014) (2010H6014)福建省教育厅产学研合作课题(JA12023)资助项目。 (JA12023)

A series of Ce_xZr_1-xO₂(0≤x≤1) solid solutions were prepared by uniformity precipitation using urea as the precipitant. Supported Pd catalyst was prepared by using the above solid solution as the carrier. The effect of the carriers surface basicity on the sintering behavior of Pd in Pd/Ce_xZr_1-xO₂ catalyst was investigated by XRD, low temperature nitrogen adsorption-desorption, CO pulse chemisorption, CO₂-TPD and in situ Diffuse Reflectance IR Fourier-Transform Spectroscopy(in situ DRIFTS). The results show that the sintering inhibition of palladium relates to the weaker basic site. Owing to its relative larger amount of weak basic site,the prepared Pd/Ce_0.75Zr_0.25O₂ catalyst exhibits higher Pd dispersion and better thermal stability.
- Ce_xZr_1-xO₂ solid solutions;dispersion of Pd;sintering;basicity
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沈阳化工大学材料科学与工程学院沈阳 110142