Preparation Of Nano-rare Earth Oxides And Its Catalytic Performance

Nanometer-sized REOs (Y2O3 Nd2O3) have been synthesized via two route-ethylene glycol sol-gel process and room-temperature solid reaction method, the former has not been reported in literature. The catalytic effect of nanometer-sized REOs on thermal decomposition reaction of AP has been investigated by DTA. Nanometer-sized Y2O3 and Nd2O3 could respectively decrease the higher decomposition peak temperature of AP to 344.68℃ and 357℃ by reduction of 108.4 and 97℃, and drastically increase the aparent decomposition heat of AP. Y2O3 showed sheet -shaped structure and better catalytic performance while doped with 3.4% Cu2+ or Fe3+. The structure and catalytic performance of Y2O3 did not change while doped with 3.4% Ni2+. The crystalite size of Nd2O3 decreased greatly while doped with 3.4% Cu2 + or Mn2 +. The catalytic performance of REO had relation with the amount of Co2+ doped in. REO/AP composite particles were synthesized through solvent-nonsolvent method. It was found that with the equivalent content of the catalyst, REOs in the composite particles showed better catalytic activity than that in the simply mixed sample of nanometer-sized REO and AP...