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以H3PMo12O4·0nH2O、H4PMo11VO4·0nH2O和(NH4)6P2Mo18O6·2nH2O3种杂多化合物为钼源,采用直接混合后陈化的方法合成了多形貌A113基钼酸盐晶体,相应A113基钼酸盐晶体的形貌和尺寸分别是斜方三棱柱形(80μm×30μm)、星形(30μm×10μm)和叶片形(500μm×150μm)。粉末X射线衍射结果表明这3种多形貌A113基钼酸盐晶体结晶较好,在2θ为6.65°、8.00°和14.16°处都有强而尖锐的衍射峰。而以Na2MoO4·2H2O为钼源时只能制得无定形簇合物。根据ICP、FTIR和TG/DTG结果给出多形貌的Al13基钼酸盐晶体的化学简式为Na[AlO4Al12(OH)24(H2O)12][MoO4]·48H2O。初步探讨了A113基钼酸盐晶体的形成机理。
The multi-morphology A113-based molybdate crystals were synthesized by direct mixing after aging with H3PMo12O4.0nH2O, H4PMo11VO4.0nH2O and (NH4) 6P2Mo18O6.2nH2O3 heteropoly compounds as molybdenum source. The corresponding A113-based molybdate crystals The morphology and size are rhombohedral (80 μm × 30 μm), star (30 μm × 10 μm) and leaf (500 μm × 150 μm), respectively. The powder X-ray diffraction results show that the crystal morphology of the three kinds of multi-morphology A113-based molybdate crystal is better, and there are strong and sharp diffraction peaks at 2θ of 6.65 °, 8.00 ° and 14.16 °. When Na2MoO4 · 2H2O is a molybdenum source, amorphous clusters can only be obtained. According to ICP, FTIR and TG / DTG results, the chemical formula of multi-morphology Al13-based molybdate crystals is Na [AlO4Al12 (OH) 24 (H2O) 12] [MoO4] 48H2O. The formation mechanism of A113 molybdate crystal was preliminarily discussed.