Iron-based spinel composite oxide catalyst and its application
A composite oxide and catalyst technology, applied in physical/chemical process catalysts, hydrocarbons, hydrocarbons, etc., can solve the problem of low conversion rate of butene, low yield of butadiene, and high generation rate of alkyne by-products problem, to achieve the effect of enhanced activation
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Embodiment 1
[0050] Get 236.0g ferric nitrate (Fe(NO 3 ) 3 9H 2 O), 128.2g magnesium nitrate (Mg(NO 3 ) 2 6H 2 O), 29.4g zinc nitrate (Zn(NO 3 ) 2 6H 2 O) and 3.3g manganese nitrate (Mn(NO 3 ) 2 ) was dissolved in 400ml of deionized water, then 3.0g of glucose was added to dissolve, and then at 60°C, under vigorous stirring, slowly added dropwise ammonia water (20%) containing 0.62g of ammonium sulfide to the mixed aqueous solution, and the pH value was controlled to be 9.5 , a precipitate was formed, which was aged at room temperature for 6 hours and then filtered. The filtered solid was then washed 5 times with deionized water, adding 1.1 g of HO during the last wash 3 PO 4 , dried at 120°C, pulverized, sieved, and calcined at 700°C for 6 hours to obtain composite oxide catalyst A. Catalyst A is composed of oxides and its chemical formula is:
[0051] 59.0%Fe 2 O 3 0.8%FeS 25.7%MgO 1.0%P 2 O 5 11.5%ZnO 2.0%MnO 2
[0052] XRD diffraction spectrum proves that it conta...
Embodiment 2
[0056] Get 130.4g ferric nitrate (Fe(NO 3 ) 3 9H 2 O), 51.3g magnesium nitrate (Mg(NO 3 ) 2 6H 2 O), 36.7g zinc nitrate (Zn(NO 3 ) 2 6H 2 O) and 2.1g manganese nitrate (Mn(NO 3 ) 2 ) was dissolved in 400ml of deionized water, then 3.0g of polyvinyl alcohol was added to dissolve, and then at room temperature, under vigorous stirring, the mixed aqueous solution was slowly added dropwise to 12% ammonia water (containing 1.54g of ammonium sulfide), and the pH was controlled to be 8.0, a precipitate was formed, aged at room temperature for 6 hours, and then filtered. The filtered solid was then washed 5 times with deionized water, adding 2.8 g of H during the last wash 3 PO 4 , dried at 110°C, pulverized, sieved, and calcined at 700°C for 6 hours to obtain composite oxide catalyst B. Catalyst B is composed of oxides and its chemical formula is:
[0057] 52.3%Fe 2 O 3 2.0%FeS 17.4%MgO 4.4%P 2 O 5 21.8%ZnO 2.2%MnO 2
[0058] XRD diffraction spectrum proves that ...
Embodiment 3
[0062] Get 189.7g ferric nitrate (Fe(NO 3 ) 3 9H 2 O), 51.3g magnesium nitrate (Mg(NO 3 ) 2 6H 2 O), 40.5g zinc nitrate (Zn(NO 3 ) 2 6H 2 O) and 1.7g manganese nitrate (Mn(NO 3 ) 2 ) was dissolved in 400ml of deionized water, then 5.0g of polyvinylpyrrolidone was added to dissolve, and then the mixed aqueous solution and 18% ammonia water (containing 1.16g of ammonium sulfide) were added dropwise at 60°C under vigorous stirring, and the pH was controlled to be 9.0, a precipitate formed, aged at room temperature for 6 hours, and then filtered. The filtered solid was then washed 5 times with deionized water, adding 2.1 g of H during the last wash 3 PO 4 , dried at 120°C, pulverized, sieved, and calcined at 700°C for 6 hours to obtain composite oxide catalyst C. Catalyst C is composed of oxides and its chemical formula is:
[0063] 62.0%Fe 2 O 3 1.5%FeS 13.7%MgO 18.8%ZnO 2.6%P 2 O 5 1.4%MnO
[0064] XRD diffraction spectrum proves that it contains spinel, α-F...
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