Preparation method of catalyst for preparing styrene through ethylbenzene dehydrogenation
A technology for ethylbenzene dehydrogenation and catalyst, which is applied in the direction of catalyst activation/preparation, catalyst, carbon compound catalyst, etc., can solve the problems of poor stability and low catalytic activity, reduce side reactions, improve activity and selectivity, and improve The effect of stability
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Embodiment 1
[0049]Weigh 335g iron oxide red, 66.06g potassium carbonate, 79g cerium oxalate, 20g ammonium molybdate, 30g magnesium oxide, 30g calcium oxide, 25g carboxymethyl cellulose, the catalyst preparation steps are: first 335g iron oxide red in 750 Roast at ℃ for 4 hours, then add 6.6g of potassium carbonate to deionized water to form 70ml of potassium carbonate aqueous solution A, finally dry mix 335g of iron oxide red, 15g of magnesium oxide and 15g of calcium oxide for 1 hour, then add the prepared potassium carbonate aqueous solution A, wait for Mg Form 0.5-1mm small particles with more than 90% of Ca, potassium and iron raw materials, transfer them all to a high-temperature resistant container, and roast at 750°C for 4 hours to obtain precursor I; add all the remaining potassium raw materials into deionized water to form 85ml of carbonic acid Potassium aqueous solution B, grind the precursor I to 80 mesh, add the remaining magnesium oxide, calcium oxide, cerium oxalate, ammonium...
Embodiment 2
[0051] Weigh 350g iron oxide red, 44g potassium carbonate, 63.2g cerium oxalate, 10g ammonium molybdate, 25g magnesium oxide, 25g calcium oxide, 66g lanthanum nitrate, 28g carboxymethyl cellulose, the catalyst preparation steps are: first oxidize 350g Roast iron red at 750°C for 4 hours, then add 17.6g potassium carbonate to deionized water to form 75ml potassium carbonate aqueous solution A, finally dry mix 350g iron oxide red, 10g magnesium oxide and 10g calcium oxide for 1 hour, then add the prepared potassium carbonate aqueous solution A. After more than 90% of Mg, Ca, potassium and iron raw materials form 0.5-1mm small particles, transfer them to a high-temperature resistant container, and roast at 730°C for 4 hours to obtain precursor I; add all the remaining potassium raw materials to deionization Form 90ml potassium carbonate aqueous solution B in water, grind the precursor I to 80 mesh, add the remaining magnesium oxide, calcium oxide, cerium oxalate, ammonium molybdat...
Embodiment 3
[0053] Take by weighing 375g red iron oxide, 58.7g potassium carbonate, 55g cerium oxalate, 6g ammonium molybdate, 17g magnesium oxide, 20g calcium oxide, 10.0g zinc oxide, 30g carboxymethyl cellulose, the catalyst preparation steps are: first 375g Roast iron oxide red at 700°C for 4 hours, then add 17.6g potassium carbonate to deionized water to form 75ml potassium carbonate aqueous solution A, finally dry mix 375g iron oxide red, 10.2g magnesium oxide and 12g calcium oxide for 1 hour, then add the prepared carbonate Potassium aqueous solution A, after more than 90% of Mg and Ca and potassium and iron raw materials form 0.5-1mm small particles, transfer them all to a high-temperature resistant container, and roast at 780°C for 4 hours to obtain precursor I; add all the remaining potassium raw materials Form 80ml potassium carbonate aqueous solution B in deionized water, grind the precursor I to 80 mesh, add the remaining magnesium oxide, calcium oxide, cerium oxalate, ammonium...
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