Preparation method of room-temperature ball-milling solid phase chemical reaction of rare earth mixing with nano stannic oxide
A technology of nano-tin dioxide and solid-phase chemical reaction, which is applied in the direction of tin oxide, etc., can solve the problems of antimony and tin ion hydrolysis out of synchronization, difficulty in achieving uniform mixing, and difficulty in large-scale industrial production, achieving shortened chemical reaction time, The effect of speeding up the chemical reaction and preventing the hydrolysis of tin ions
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Embodiment 1
[0026] In this embodiment, the reactants are stannous chloride and cerium chloride, and the ligand is oxalic acid. The process flow is as follows: figure 1 As shown, there are the following steps in sequence
[0027] 1. Ingredients
[0028] The molar ratio of the total amount of stannous chloride, cerium chloride and oxalic acid is 1:2, wherein the molar ratio of tin and cerium ions is 94:6
[0029] 2. Mixing
[0030] Mix the proportioned stannous chloride, cerium chloride and oxalic acid until uniform;
[0031] 3. Preparation of precursors by ball milling solid-phase chemical reaction at room temperature
[0032] The uniformly mixed stannous chloride, cerium chloride and oxalic acid are ball milled at room temperature and normal pressure, so that they react to form precursors under the action of mechanical shear force and impact force generated during the ball milling process, and the speed of the ball mill is controlled at 300 rpm, ball milling for 60 minutes can complet...
Embodiment 2
[0040] In this embodiment, the reactants are stannous sulfate and cerium sulfate, and the ligand is ammonium carbonate. The process flow is as follows: figure 1 As shown, there are the following steps in sequence:
[0041] 1. Ingredients
[0042] The molar ratio of stannous sulfate, cerium sulfate total amount and ammonium carbonate is 1: 3, wherein tin, cerium ion molar ratio is 93: 7;
[0043] 2. Mixing
[0044] Mix the proportioned stannous sulfate, cerium sulfate and ammonium carbonate until uniform;
[0045] 3. Preparation of precursors by ball milling solid-phase chemical reaction at room temperature
[0046] The uniformly mixed stannous sulfate, cerium sulfate and ammonium carbonate are ball milled at room temperature and normal pressure, so that they can react to form precursors under the action of mechanical shear force and impact force generated during the ball milling process. The speed of the ball mill is 350 rpm / min, ball milling for 50 minutes can completely...
Embodiment 3
[0054] In this embodiment, the reactants are tin chloride and lanthanum chloride, and the ligand is oxalic acid. The process flow is as follows: figure 1 As shown, there are the following steps in sequence:
[0055] 1. Ingredients
[0056] The molar ratio of tin chloride, lanthanum chloride total amount and oxalic acid is 1: 4, wherein tin, lanthanum ion molar ratio is 96: 4;
[0057] 2. Mixing
[0058] Mix tin chloride, lanthanum chloride and oxalic acid in proportion until uniform;
[0059] 3. Preparation of precursors by ball milling solid-phase chemical reaction at room temperature
[0060]The uniformly mixed reaction system is ball milled at room temperature and normal pressure, so that it reacts to form a precursor under the action of mechanical shear force and impact force generated during the ball milling process. It can completely react tin chloride, lanthanum chloride and oxalic acid to form precursors;
[0061] 4. Precursor removal
[0062] The precursor is re...
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