A series of H3PO4-modified CeO2 samples were prepared by impregnation of CeO2 with H3PO4solution,and evaluated for the selective catalytic reduction of NOx by *** samples were characterized by X-ray diffraction,N2 ads...
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A series of H3PO4-modified CeO2 samples were prepared by impregnation of CeO2 with H3PO4solution,and evaluated for the selective catalytic reduction of NOx by *** samples were characterized by X-ray diffraction,N2 adsorption-desorption,infrared spectroscopy,Raman spectroscopy,X-ray photoelectron spectroscopy,temperature-programmed desorption of NH3,and temperature-programmed reduction of *** results showed that more than 80%NO conversion was achieved in the temperature range 250-550℃ over the H3PO4-CeO2 *** enhanced catalytic performance could be ascribed to the increase in acidic strength,especially Bronsted acidity,and reduction in redox properties of the CeO2 after H3PO4 modification.
Highly dispersed metals,metal oxides and their composites on substrates have received considerable interest in catalysis and lithium-ion batteries,because of their superior properties compared with their single-compon...
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Highly dispersed metals,metal oxides and their composites on substrates have received considerable interest in catalysis and lithium-ion batteries,because of their superior properties compared with their single-component *** this review,we introduce the properties of supercritical carbon dioxide（scCO2） expanded ethanol,such as low viscosity,near-zero surface tension and high *** discuss the deposition procedure and formation mechanism of carbon-based composites in scCO2-expanded *** method has been used to fabricate several carbon-based composites,such as metal and metal oxide composites deposited on zero-dimensional colloidal carbon,one-dimensional carbon nanotubes,two-dimensional graphene,and three-dimensional hierarchical porous *** materials and their performance as anodic materials for lithium-ion batteries will also be reviewed.
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