کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
44928 | 46380 | 2016 | 8 صفحه PDF | دانلود رایگان |
• Novel low temperature catalyst for direct N2O decomposition.
• Ag nanoparticles and Yb2O3.
• Pre-organization in bimetallic coordination polymer.
Ag nanoparticles in a Yb2O3 matrix catalyzed the direct decomposition of N2O to the elements. Our investigations included X-ray powder diffraction and electron microscopy; they revealed a remarkable dependence of the catalytic activity on the catalyst preparation method that influenced the size of Ag crystallites. Simple precipitation followed by calcination resulted in the formation of a catalyst with rather large Ag crystallites, which showed low activity. In contrast, thermal decomposition of the mixed-metal Ag–Yb coordination polymer provided the Ag/Yb2O3 catalytic system with distinctly smaller Ag crystallites. The coordination-polymer derived catalyst exhibited much higher activity in the deN2O process at moderate temperature range 400–500 °C.
Hard to make but attractive as a catalyst—thermal decomposition of a mixed-metal Ag(I)/Yb(III) coordination polymer affords Ag nanoparticles in a Yb2O3 matrix. This system catalyzes the decomposition of N2O to the elements at moderate temperatures.Figure optionsDownload as PowerPoint slide
Journal: Applied Catalysis B: Environmental - Volume 190, 5 August 2016, Pages 85–92