Catalyst and method for preparing maleic anhydride by normal butane oxidization
A technology of n-butane and catalyst, which is applied in the field of catalysts for the production of maleic anhydride by n-butane oxidation, can solve the problems of low reaction yield and poor selectivity, and achieves the effects of large specific surface area, reduced influence and good catalyst strength
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Embodiment 1
[0038] 9.7g TiCl 4 and 16.05 g ZrOCl 2 ·8H 2 O was dissolved in deionized water to make a solution with a concentration of 0.5M. The resulting solution was dripped into a 5 wt% hydrochloric acid solution with stirring and the pH value in the solution was detected. When the pH value reached about 9, the dropwise addition and stirring were stopped, left to age at room temperature for 12h, and then filtered, and used Wash with deionized water until no Cl ions are detected in the silver nitrate solution, and dry at 120°C for 16 hours. Add the dried composite oxide into a phosphoric acid solution with a concentration of about 1M and raise the temperature to 70°C and keep stirring for 8 hours. After the obtained acid-treated composite oxide is filtered and washed, it is dried in an oven at 120°C and placed in a muffle furnace. Calcined at 500°C for 6h to obtain a composite oxide support.
[0039] Put 2.5g V 2 o 5 Add to the mixed solution of 61.5ml isobutanol and 13.8ml benzyl...
Embodiment 2
[0045] 9.7g TiCl at room temperature 4 and 25g ZrOCl 2 ·8H 2 O was dissolved in deionized water to make a solution with a concentration of 0.5M. The resulting solution was dripped into 25 wt% ammonia solution under agitation and the pH value in the solution was detected. When the pH value reached about 9, the dropwise addition and stirring were stopped, left to age at room temperature for 12 h, filtered, and used Wash with deionized water until no Cl ions are detected in the silver nitrate solution, and dry at 120°C for 16 hours. Add the dried oxide into a phosphoric acid solution with a concentration of about 1M and raise the temperature to 70°C and keep stirring for 8 hours. After the obtained acid-treated oxide is filtered and washed, it is dried in an oven at 120°C and placed in a muffle furnace at 500°C. Calcined for 6h under the condition of 2 -ZrO 2 Composite carrier.
[0046] Put 2.5g V 2 o 5 Add to the mixed solution of 61.5ml isobutanol and 13.8ml benzyl alco...
Embodiment 3
[0049] 14.3g TiCl 4 and 16.05 g ZrOCl 2 ·8H 2 O was dissolved in deionized water to make a solution with a concentration of 0.5M. The resulting solution was dripped into a 5 wt% hydrochloric acid solution with stirring and the pH value in the solution was detected. When the pH value reached about 9, the dropwise addition and stirring were stopped, left to age at room temperature for 12h, and then filtered, and used Wash with deionized water until no Cl ions are detected in the silver nitrate solution, and dry at 120°C for 16 hours. Add the dried precipitate into a phosphoric acid solution with a concentration of about 1M and raise the temperature to 70°C and keep stirring for 8 hours. After the obtained acid-treated precipitate is filtered and washed, it is dried in an oven at 120°C and placed in a muffle furnace at 500°C. Roast 6h to get TiO 2 -ZrO 2 Composite carrier.
[0050] Put 2.5g V 2 o 5 Add to the mixed solution of 61.5ml isobutanol and 13.8ml benzyl alcohol, ...
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