Preparation method for tetragonal phase nano barium titanate
A technology of barium titanate and tetragonal phase, which is applied in the field of preparation of tetragonal phase nano barium titanate, can solve the problems of complex process, cumbersome operation, large particle size, etc., achieve simple and easy process, avoid particle growth, and average particle size small diameter effect
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[0043] Example 1
[0044] Weigh BaCl accurately respectively 2 ·2H 2 O27.48g, H 2 C 2 O 4 ·2H 2 O30.88g, Ti(OC 4 H 9 ) 4 39.2ml, prepare barium chloride and oxalic acid into an aqueous solution, dissolve butyl titanate in an appropriate amount of ethanol solution, then add the butyl titanate alcohol solution to the oxalic acid solution, stir to form a transparent light yellow solution, adjust the pH range with ammonia 2.5-3.0, ultrasonic vibration for 10 minutes, the total amount of solution is 2.0L. Use spiral channel type rotating bed supergravity reactor to generate supergravity field and supergravity field level, that is, control the rotation speed of supergravity reactor rotor at 700 rpm, react and circulate in the supergravity field, and drop into the supergravity field reactor Add BaCl 2 ·2H 2 O solution, the liquid volume is 0.5L, the reaction produces a white precipitate. The resulting precipitation suspension was allowed to stand in a water bath at 80°C for 2 hours and...
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[0045] Example 2
[0046] Weigh BaCl accurately respectively 2 ·2H 2 O27.48g, H 2 C 2 O 4 ·2H 2 O30.88g, Ti(OC 4 H 9 ) 4 39.2ml, prepare barium chloride and oxalic acid into an aqueous solution, dissolve butyl titanate in an appropriate amount of ethanol solution, then add the butyl titanate alcohol solution to the oxalic acid solution, stir to form a transparent light yellow solution, adjust the pH range with ammonia 2.5-3.0, ultrasonic vibration for 10 minutes, the total amount of solution is 2.0L. Use spiral channel type rotating bed supergravity reactor to generate supergravity field and supergravity field level, that is, control the rotation speed of supergravity reactor rotor at 800 rpm, react and circulate in the supergravity field, and drop into the supergravity field reactor Add BaCl 2 ·2H 2 O solution, the liquid volume is 0.5L, the reaction produces a white precipitate. The resulting precipitation suspension was allowed to stand in a water bath at 80°C for 2 hours and...
Example Embodiment
[0047] Example 3
[0048] Weigh BaCl accurately respectively 2 ·2H 2 O142.8g, H 2 C 2 O 4 ·2H 2 O162g, Ti(OC 4 H 9 ) 4 200ml, prepare barium chloride and oxalic acid into an aqueous solution, dissolve butyl titanate in an appropriate amount of ethanol solution, then add the butyl titanate alcohol solution to the oxalic acid solution, stir to form a transparent light yellow solution, adjust the pH range with ammonia 2.5-3.0, ultrasonic vibration for 10min, the total amount of solution is 2.0L. Use the spiral channel type rotating bed supergravity reactor to generate the supergravity field. The supergravity field level is to control the rotation speed of the supergravity reactor rotor at 800 rpm, and react and circulate in the supergravity field to the supergravity field reactor. Add BaCl dropwise 2 ·2H 2 O solution, the liquid volume is 0.5L, the reaction produces a white precipitate. The resulting precipitation suspension was allowed to stand in a water bath at 80°C for 2 hours ...
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