Catalyst carrier and catalyst as well as preparation method thereof
A catalyst carrier and catalyst technology, applied in the direction of catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., can solve the problem of easy deactivation of catalysts, achieve the effects of reducing selectivity, increasing surface area, and reducing carbon deposition
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Embodiment 1
[0034] Embodiment 1 Catalyst NiO / CaO-Al 2 o 3 preparation of
[0035] Alumina pretreatment: Grind activated alumina pellets into powder in a pulverizer, put them in a muffle furnace for calcination at 800°C for 18 hours.
[0036] Catalyst support CaO-Al 2 o 3 Preparation: 52.57g Ca(NO 3 ) 2 4H 2 O plus distilled water to make Ca 2+ Aqueous solution with a concentration of 0.8mol / L, heated to 50°C, and then adding 50g of pretreated Al 2 o 3 The powder is stirred and impregnated at constant temperature for 6 hours, and then the impregnated mixture is dried in an oven at 105°C for 12 hours until the water is evaporated, cooled, then placed in a muffle furnace for calcination at 900°C for 14 hours, and crushed. The loading amount of CaO after calcination is 20% of the weight of the catalyst carrier.
[0037] Catalyst NiO / CaO-Al 2 o 3 Preparation: 10.23g Ni(NO 3 ) 2 ·6H 2 O plus distilled water to make Ni 2+ The aqueous solution with a concentration of 0.8mol / L is hea...
Embodiment 2
[0038] Embodiment 2 Catalyst NiO / CeO 2 -Al 2 o 3 preparation of
[0039] Alumina pretreatment: Grind activated alumina pellets into powder in a pulverizer, put them in a muffle furnace for calcination at 900°C for 12h.
[0040] Catalyst support CeO 2 -Al 2 o 3 Preparation: 31.52g Ce(NO 3 ) 3 ·6H 2 O plus distilled water to make Ce 3+ Aqueous solution with a concentration of 0.8mol / L, heated to 40°C, and then adding 50g of pretreated Al 2 o 3 Powder, stirred and impregnated at constant temperature for 7 hours, then dried the impregnated mixture in an oven at 105°C for 15 hours until the moisture was evaporated, cooled, then placed in a muffle furnace for calcination at 800°C for 12 hours, and then pulverized. Calcined CeO 2 The loading amount is 20% of the mass of the catalyst carrier.
[0041] Catalyst NiO / CeO 2 -Al 2 o 3 Preparation: 21.60g Ni(NO 3 ) 2 ·6H 2 O plus distilled water to make Ni 2+ Concentration of 0.8mol / L aqueous solution, heated to 60 ° C, ...
Embodiment 3
[0042] Embodiment 3 Catalyst NiO / CaO-La 2 o 3 -Al 2 o 3 preparation of
[0043] Alumina pretreatment: Grind activated alumina pellets into powder in a pulverizer, put them in a muffle furnace for calcination at 850°C for 15h.
[0044] Catalyst support CaO-La 2 o 3 -Al 2 o 3 Preparation: 28.04g Ca(NO 3 ) 2 4H 2 O and 26.57g La(NO 3 ) 3 ·6H 2 O plus distilled water to make Ca 2+ +La 3+ Aqueous solution with a concentration of 0.8mol / L, heated to 60°C, and then adding 50g of pretreated Al 2 o 3 Powder, stirred and impregnated at constant temperature for 8 hours, then dried the impregnated mixture in an oven at 110°C for 21 hours until the moisture was evaporated, cooled, then placed in a muffle furnace for calcination at 850°C for 16 hours, and then pulverized. After calcination, the loading of CaO was 10% of the mass of the catalyst support, La 2 o 3 The loading amount is 15% of the mass of the catalyst carrier.
[0045] Catalyst Ni / CaO-La 2 o 3 -Al 2 o 3...
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