Aerosol synthesis and Rietveld analysis of tetragonal (beta(1)) PdZn

作者：Peterson Eric J; Halevi Barr; Kiefer Boris; Spilde Michael N; Datye Abhaya K^*; Peterson Joe; Daemen Luc; Llobet Anna; Nakotte Heinz

来源：Journal of Alloys and Compounds, 2011, 509(5): 1463-1470.

DOI：10.1016/j.jallcom.2010.09.149

• PdZn
• Catalysis
• Crystal structure
• Order-disorder effects
• Phase diagrams
• Neutron
• Diffraction
• Thermal analysis
• X-ray diffraction
• Scanning electron microscopy
• SEM
• Intermetallics
• Transition metal alloys and compounds

The beta(1) PdZn intermetallic of nominal 50:50 Pd:Zn at% was synthesized using an aerosol method. The aerosol method provided atomically mixed precursor oxy-nitrate powder that was then reduced to form beta(1) PdZn, having a surface area amenable to catalytic measurements. Formation of the beta(1) PdZn during reduction was found to occur rapidly (4 h) and at moderate temperature (500 degrees C), serving to minimize the loss of volatile Zn. Chemical and structural characterization confirms that beta(1) PdZn (95-99 wt% phase pure) of the same composition as the nitrate feedstock solution can be prepared using this method. Detailed structural analysis shows that this material contains little or no vacancies and minimal Pd/Zn disorder.

• 出版日期2011-2-3