Inorganic phosphate and uses thereof
A technology of inorganic phosphate and action, which is applied to the preparation of the above-mentioned materials. The above-mentioned materials are used in the field of solid electrolyte and ion exchange, which can solve the problems of acid sensitivity and inability to use, and achieve good acid resistance and good ion exchange selection. sexual effect
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Embodiment 1
[0044] Mix titanium phosphate, aluminum phosphate, phosphoric acid, hydrofluoric acid, ethylenediamine, and deionized water in a molar ratio of 3:3:16:4:3:40, stir at room temperature for two hours, then add dropwise Saturated solution with sodium hydroxide, adjust pH to 8-8.5, and stir for another hour. The obtained gel was transferred into a stainless steel kettle equipped with polytetrafluoroethylene lining, and placed in an oven for crystallization at 180° C. for 7 days. The obtained product is washed three times with deionized water, and the obtained product is a mixture of white powder and large hexagonal columnar white crystals. Pick out the large hexagonal prism crystal, and the X-ray single crystal diffraction data show that the molecular formula of the crystal is Na 14.5 [Al(PO 4 ) 2 f 2 ] 2.5 [Ti(PO 4 ) 2 f 2 ] 0.5 , belongs to the P-3 space group, unit cell parameter a=10.448(2) b=10.448(2) c=6.589(3) Z=1. The basic crystallographic data are listed ...
Embodiment 2
[0046] Mix titanium sulfate, aluminum nitrate, phosphoric acid, hydrofluoric acid, ethylenediamine, and deionized water in a molar ratio of 1:3:16:4:3:40, stir at room temperature for two hours, and then dropwise add Saturated solution with sodium hydroxide, adjust pH to 8-8.5, and stir for another hour. The obtained gel was transferred into a stainless steel kettle equipped with polytetrafluoroethylene lining, and placed in an oven for crystallization at 180° C. for 7 days. The obtained product was washed three times with deionized water to obtain uniform hexagonal white crystals. The result of X-ray fluorescence elemental analysis shows that the mol ratio of aluminum element and titanium element is 7.5 in this crystal, and the powder X-ray diffraction pattern of this crystal compares with the powder X-ray diffraction pattern fitted by single crystal X-ray diffraction result (see figure 2 ), it can be seen that the basic peak positions in the two figures are in good agreeme...
Embodiment 3
[0048]Mix aluminum phosphate, phosphoric acid, hydrofluoric acid, ethylenediamine, and deionized water in a molar ratio of 3:16:4:3:40, stir at room temperature for two hours, then add saturated sodium hydroxide solution dropwise to the system , adjust the pH to 8-8.5, and stir for another hour. The obtained gel was transferred into a stainless steel kettle equipped with polytetrafluoroethylene lining, and placed in an oven for crystallization at 180° C. for 7 days. The obtained product was washed three times with deionized water to obtain uniform hexagonal white crystals. The powder X-ray diffraction pattern of this crystal is compared with the X-ray diffraction pattern of the crystal obtained in Example 2. The peak positions are well matched, and only the peak intensities of some peaks are not the same. This is due to the preferred orientation of the crystal in the diffraction process. influences. Illustrate that the structure of this crystal is the same as that of the sin...
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