A facile, simple and rapid preparation method of cerim orthophosphate was presented. The synthesis of low-crystalline CePO4 occurred upon mixing of cerium （Ⅲ） nitrate and sodium phosphate, and was an exchange-type ...A facile, simple and rapid preparation method of cerim orthophosphate was presented. The synthesis of low-crystalline CePO4 occurred upon mixing of cerium （Ⅲ） nitrate and sodium phosphate, and was an exchange-type reaction. The phase composition of the obtained powder was checked by the XRD and FTIR methods, indicating the presence of cerium phosphate. Further investigations on thermal behavior of the synthesized cerium salt had shown that the obtained orthophosphate crystallized at first in rhabdophane-type structure. It converted to monazite （monoclinic symmetry） during heating at the temperatures of above 600℃. Oxidation of Ce3＋ to Ce4＋ was avoided during the syntheses, as confirmed by the XPS experiments.展开更多
基金supported by Ministry of Science and Higher Education (1 PO3B 078 29)
文摘A facile, simple and rapid preparation method of cerim orthophosphate was presented. The synthesis of low-crystalline CePO4 occurred upon mixing of cerium （Ⅲ） nitrate and sodium phosphate, and was an exchange-type reaction. The phase composition of the obtained powder was checked by the XRD and FTIR methods, indicating the presence of cerium phosphate. Further investigations on thermal behavior of the synthesized cerium salt had shown that the obtained orthophosphate crystallized at first in rhabdophane-type structure. It converted to monazite （monoclinic symmetry） during heating at the temperatures of above 600℃. Oxidation of Ce3＋ to Ce4＋ was avoided during the syntheses, as confirmed by the XPS experiments.
