Applications of cerium hydrogen iodate tetrahydrate
A technology of tetrahydration and iodic acid, which is applied in the field of environmental pollution control, achieves high durability, simple preparation method, and is conducive to popularization and application
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[0022] (1) CeHIO 6 ·4H 2 Preparation of O
[0023] 1.37 g (2.5 mmol) cerium ammonium nitrate ((NH 4 ) 2 Ce(NO 3 ) 6 ) and 0.2 mL of concentrated nitric acid were dissolved in 35 mL of deionized water to obtain a solution of ceric ammonium nitrate. Add 0.57 g (2.5 mmol) periodic acid (H 5 IO 6 ) was dissolved in 15 mL of deionized water to obtain a periodic acid solution. At room temperature, while stirring the ceric ammonium nitrate solution, the periodate solution was added dropwise to the ceric ammonium nitrate solution. After the dropwise addition was completed, stirring was continued for 1 h. The obtained precipitate was washed twice with deionized water (50 mL of deionized water each time), centrifuged, and placed at a temperature of 60 o C in an oven for 12 h to obtain CeHIO 6 ·4H 2 O sample.
[0024] (2) CeHIO 6 ·4H 2 Characterization of O
[0025] from figure 1 The SEM image of the CeHIO can be seen 6 ·4H 2 The O samples have a random morphology with...
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