采用化学沉淀法对合成的CePO4前驱体进行了研究,探讨了不同合成试剂制备的CePO4前驱体随煅烧温度变化晶体的相变情况.TEM和SEM结果显示,H3PO4溶液和CeCl3溶液在室温下合成产物呈针状,而Na3PO4溶液和CeCl3溶液室温下的合成产物为胶状.差热-热重分析(TG-DTA)和XRD实验结果表明,H3PO4溶液和CeCl3溶液合成产物在711.5℃时发生相变,由六方晶相转变为单斜晶相,而Na3PO4和CeCl3的合成产物在231℃时会发生相变,由无定形态转变为单斜晶相.
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