Catalyst used for dehydrogenation preparation of monoolefine by saturated alkane
A technology for alkane dehydrogenation and catalysts, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, hydrocarbons, etc., can solve the problems of high investment and operating costs, and achieve high alkane single pass Conversion rate, high olefin selectivity, and good stability
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Embodiment 1
[0019] Add 338.03 g of deionized water to 84.51 g of pseudoboehmite, stir well in a water bath at 65° C., add hydrochloric acid to form a gel, and adjust the pH value to about 3-4. Weigh 144.45g of Mg(NO 3 ) 2 ·6H 2 O was added to the prepared gel, then 50g of deionized water was added, mechanically stirred evenly, dried at 120°C for 6 hours, then roasted at 700°C for 4 hours, crushed and sieved after cooling, and 80-180 mesh particles were used as the carrier spare. 72.15g of Fe(NO 3 ) 3 9H 2 O, 40.93g of Zn(NO 3 ) 2 ·6H 2 O was dissolved in 80g deionized water and stirred evenly, the prepared carrier was impregnated with the mixed solution, dried at 80°C for 6h, and then calcined at 600°C for 2h. Weigh 2.74g of NaNO 3 Prepared as an aqueous solution, impregnated on the above catalyst, then dried at 120°C for 6h, and finally calcined at 600°C for 5h.
Embodiment 2
[0021] Add 470.59g deionized water to 117.65g pseudo-boehmite, stir well in a water bath at 70°C, add hydrochloric acid to form a gel, adjust the pH value to about 3-4, stir mechanically, dry at 100°C for 8h, and then Calcined at 700°C for 2 hours, crushed and sieved after cooling, and took 80-180 mesh particles as the carrier for later use. 49.39g of Co(NO 3 ) 2 ·6H 2 O, 36.12g of Cu(NO 3 ) 2 ·3H 2 O was dissolved in 80g deionized water and stirred evenly, the prepared carrier was impregnated with the mixed solution, dried at 120°C for 6h, and then calcined at 600°C for 4h. Weigh 1.07gKNO 3 It is formulated as an aqueous solution, impregnated on the above catalyst, then dried at 140°C for 6 hours, and finally calcined at 400°C for 2 hours.
Embodiment 3
[0023] 59.46g of Ni(NO 3 ) 2 ·6H 2 O, 45.80 g of SnCl 2 2H 2 O was dissolved in 100g of absolute ethanol, after stirring evenly, weighed 75g of SiO 2 Add it to the aforementioned solution, stir and evaporate to dryness in a water bath at 80°C, then dry at 120°C for 5 hours, and bake at 600°C for 2 hours. Weigh 0.21gKNO 3 It is formulated as an aqueous solution, impregnated on the above catalyst, then dried at 100°C for 8 hours, and finally calcined at 700°C for 4 hours.
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