Method for preparing mesoporous titanium dioxide powder body
A mesoporous titanium dioxide and system technology, applied in titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problem of changing the catalytic performance and photocatalytic performance of mesoporous titanium dioxide powder, affecting the popularization and application of titanium dioxide powder, carbon dioxide and other problems such as impurity residues, etc., to achieve the effect of easy scale-up experiments, low cost, and small impurity content
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Embodiment 1
[0026] (1) Fix a three-neck bottle with a capacity of 500mL in an ice-water bath, take pure water (H 2 (2) 200mL is packed in the there-necked bottle; A condenser is installed on the middle port of the there-necked bottle, and utilizes tap water to condense; A junction thermometer is installed on a mouth of the there-necked bottle, to monitor and control the temperature of the reaction system; Take TiCl 4 Put 100mL into a dry constant-pressure separating funnel, and install the constant-pressure separating funnel on the other side port of the three-necked flask; under the condition of magnetic stirring and ice-water bath cooling, turn on the switch of the constant-pressure separating funnel, The titanium chloride solution is slowly dropped into pure water, and the temperature of the entire dropping and mixing process is controlled at about 20°C by controlling the dropping speed and the temperature of the ice-water bath; with the addition of titanium tetrachloride, the color of ...
Embodiment 2
[0031] (1) adopt the device described in step (1) in embodiment 1, get pure water (H 2 (2) 300mL is packed into there-necked bottle; Get TiCl 4 Put 100mL into a dry constant-pressure separating funnel; under the conditions of magnetic stirring and ice-water bath cooling, turn on the switch of the constant-pressure separating funnel, slowly drop the titanium tetrachloride solution into pure water, and control the dropping speed and The temperature of the ice-water bath keeps the temperature of the entire dropping and mixing process at about 5°C; after the addition of titanium tetrachloride is completed, continue to stir for 2 hours. At this time, the mixed system is a light yellow-green sol. Cool it to room temperature and place it ;
[0032](2) adopt the device described in step (2) in embodiment 1, after titanium tetrachloride aqueous sol is placed 50 hours, get 100mL above-mentioned sol and pack in the there-necked bottle of 500mL; Take H 2 Put 0300mL into a dry constant-p...
Embodiment 3
[0036] (1) adopt the device described in step (1) in embodiment 1, get pure water (H 2 (2) 100mL is packed into there-necked bottle; Get TiCl 4 Put 100mL into a dry constant-pressure separating funnel; under the conditions of magnetic stirring and ice-water bath cooling, turn on the switch of the constant-pressure separating funnel, slowly drop the titanium tetrachloride solution into pure water, and control the dropping speed and The temperature of the ice-water bath keeps the temperature of the entire dropping and mixing process at about 30°C; after the titanium tetrachloride is added dropwise, continue stirring for another 2 hours. At this time, the mixed system is a light yellow-green sol. Cool it to room temperature and place it ;
[0037] (2) Adopt the device and equipment described in step (2) in Example 1, place the titanium tetrachloride aqueous sol after 30 hours, get the above-mentioned sol of 100mL and pack in the there-necked bottle of 500mL; Take H 2 Put 0350mL...
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