Mg元素掺杂磷酸铈无机颜料的制备研究

用固态化学反应法以Mg为掺杂元素制备磷酸铈无机颜料,系统地研究了掺杂量、反应温度、反应时间三个因素对反应产物颜色的影响.反应物试样分别进行X射线衍射分析(XRD)、粒度测试和色度测试.试验结果表明,Mg元素的掺杂量起关键作用,当n(Mg)/n(Ce)为0.2～0.3时,可以得到直观上的草绿色试样.经XRD分析可知掺Mg后试样为磷酸铈单斜晶系粉末；经粒度检测可知,掺杂后磷酸铈颜料粉末的平均粒径在6.m～7 μm之间；最后色度测试得出的色度坐标为L*=68.2、a*=-9.3、b*=18.7,色度坐标表示的颜色为绿色.

Synthesis of Cerium Phosphate Inorganic Pigment Doping with Magnesium

The cerium phosphate doping with magnesium used as inorganic pigment was synthesized by solid-state chemical reaction method.The impact of doping amount,reaction temperature and reaction time,on the color of products was researched systematically.The reactant samples were studied by X-ray diffraction analysis(XRD,RAX-10),granularity measurement(JL-1155 Laser Particle Analyser) and chroma test(CE-7000A Spectrophotometric Colorimeter) respectively.The results shown that the doping amount plays a key role.When the moler ratio n(Mg)/n(Ce) is from 0.2 to 0.3,the grass green samples are observed visually.The XRD analysis results show that the sample doped with magnesium is cerium phosphate monoclinic powder.The average diameter of the particle size is 6μm to 7μm.At last,the chromaticity coordinate values are L*=68.2、a*=-9.3、b*=18.7 in the chroma test,which indicate the sample color is green.