采用室温固相反应制备纳米十二面体磷酸锌铵,用微热量法研究该反应的标准摩尔反应焓和纳米磷酸锌铵的标准摩尔生成焓,用4种热分析法研究纳米磷酸锌铵的分解动力学.结果表明,该反应制备的产物是纳米NH4ZnPO4,粒径在100~300 nm之间,属六方晶系,标准摩尔反应焓23.880 kJ/mol,纳米磷酸锌铵的标准摩尔生成焓为-1 568.784 kJ/mol,标题化合物在603~692 K区间脱去1分子氨,属于三维扩散控制,活化能210.434 kJ/mol,指前因子A为5.45×1013s-1;在692~773 K脱去1分子结构水,属于成核生长控制,活化能287.557 kJ/mol,指前因子A为9.62×1019s-1,且ln A与E之间存在明显的动力学补偿效应.
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