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Comparison of barium peroxide, Ba(OH)2 and Ba(NO3)2 as the precursor of BaO for the preparation of NOx-storage BaO/Al2O3 material was carried out. The as prepared materials were calcined at 550 and 800 °C and characterized by N2 physisorption, XRD, Raman and FT-IR spectroscopy. Measurements of the NOx storage performances of these BaO/Al2O3 materials by NO2 adsorption and NOx-TPD experiments...
Narrowly sized colloidal Au particles of varying average sizes (3–30 nm) were immobilized on an inert support (SiO2) to study the Au size effect on the aerobic oxidation of ethanol in aqueous solution. Au particles with an average diameter of 5 nm showed an areal activity that was about three times that of the smaller (3 nm), and 15 times that of larger (10–30 nm) Au particles. Investigation on the...
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