CAJ | 학술논문

从气相、固相、液相3个方面分别评述了纳米CeO2制备技术的最新研究进展,并对各种制备方法进行了比较分析,得出了各种制备方法的优缺点.与气相法相比,液相沉淀法具有设备简单、无需高真空等苛刻物理条件、易放大等优点;与固相法相比,液相沉淀法制备的粉体纯度高、团聚少,易实现工业化生产,发展前景广阔.但液相沉淀法也存在纳米CeO2产品颗粒团聚、粒度分布不均匀、单分散性差等缺点,可以通过研究纳米CeO2的成核和生长机制、过程影响因素等来改善产品质量.
종기상、고상、액상3개방면분별평술료납미CeO2제비기술적최신연구진전,병대각충제비방법진행료비교분석,득출료각충제비방법적우결점.여기상법상비,액상침정법구유설비간단、무수고진공등가각물리조건、역방대등우점;여고상법상비,액상침정법제비적분체순도고、단취소,역실현공업화생산,발전전경엄활.단액상침정법야존재납미CeO2산품과립단취、립도분포불균균、단분산성차등결점,가이통과연구납미CeO2적성핵화생장궤제、과정영향인소등래개선산품질량.
The research progress of nano-CeO2 preparation is reviewed separately from the gas phase, solid phase and liquid-phase. Advantages and disadvantages of above preparation methods are obtained through comparing and analyzing. Compared with the gas-phase, liquid phase precipitation method exhibits simple equipment, no need of high vacuum,easy to enlarge. Compared with the solid phase method, liquid-phase deposition has the following disadvantages:particle agglomeration, non-uniform particle size distribution, poor monodispersity. It is suggested that studies of nucleation and growth mechanisms and influencing factors of synthesis process can improve product quality.