A preparation of tio by titanium-based binder 2 Method for forming catalyst support
A technology of catalyst carrier and binder, which is applied in the field of preparation of catalyst molding carrier, can solve the problems of easy powder falling, large specific surface area, low purity, etc., and achieve the effects of solving pollution problems, improving powder falling problems, and increasing strength
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Embodiment 1
[0035] Add 60g of titanyl sulfate into 600ml of water, and dissolve it at 80°C to obtain a clear and transparent solution. Add 340g of metatitanic acid to the solution, stir vigorously for 40 minutes, then transfer the mixture to a tetrafluoroethylene-lined hydrothermal reactor, and react at 120°C for 4 hours under autogenous pressure. Quench with water, cool down to room temperature with NH 3 ·H 2 Adjust the PH value of the mixed solution to about 7 and form a gel. The colloid is subjected to solid-liquid separation by suction filtration to obtain a colloidal filter cake, and the colloidal filter cake is washed repeatedly with deionized water until no sulfate ion is detected in the washing liquid. Place the washed colloidal filter cake in a microwave oven for heating and dehydration, adjust the microwave power to 800W, and heat for a total of 40 minutes, divided into 8 times, 5 minutes each time, with an interval of 3 minutes between adjacent two times, to obtain solid cont...
Embodiment 2
[0037] Add 70g of titanium tetrachloride to 400ml of water at room temperature, then add 360g of nano-TiO 2 , after vigorous stirring, the mixture was transferred to a tetrafluoroethylene-lined hydrothermal reactor and reacted at 150°C for 4 hours under autogenous pressure. Quench with water, cool down to room temperature with NH 3 ·H 2 O Adjust the PH value of the mixture to about 5 and form a gel. The solid-liquid separation of the colloid is carried out by suction filtration to obtain a colloidal filter cake, and the colloidal filter cake is repeatedly washed with deionized water until chloride ions are detected in the washing liquid. Place the washed colloidal filter cake in a microwave oven for heating and dehydration, adjust the microwave power to 800W, and heat for a total of 40 minutes, divided into 8 times, 5 minutes each time, with an interval of 3 minutes between adjacent two times, to obtain solid content A cement-like dough with a rate of 70%. The clay-like do...
Embodiment 3
[0039] Add 30g of titanyl sulfate into 300ml of water, and dissolve it at 80°C to obtain a clear and transparent solution. Add 370g nano TiO to the solution 2 After stirring vigorously for 40 minutes, the mixture was transferred to a tetrafluoroethylene-lined hydrothermal reactor and reacted at 180°C for 4 hours under autogenous pressure. Quench with water, cool down to room temperature with NH 3 ·H 2 Adjust the PH value of the mixed solution to about 3 and form a gel. The colloid is subjected to solid-liquid separation by suction filtration to obtain a colloidal filter cake, and the colloidal filter cake is washed repeatedly with deionized water until no sulfate ion is detected in the washing liquid. Place the washed colloidal filter cake in a microwave oven for heating and dehydration, adjust the microwave power to 800W, and heat for 40 minutes in total, divided into 8 times, 5 minutes each time, with an interval of 3 minutes between adjacent two times, to obtain solid co...
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