Calcium oxide-based high-temperature CO2 adsorbent and its preparation method
A CO2, calcium oxide technology, applied in chemical instruments and methods, separation methods, other chemical processes, etc., can solve the problems of cumbersome and involved processes, and achieve the effects of improving dispersibility, inhibiting migration, and enhancing effective surface area
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[0042] Example 1
[0043] (1) Preparation of immersion liquid I: Weigh 0.772g of Ce(NO 3 ) 3 ·6H 2 O and 0.388g of La(NO 3 ) 3 ·6H 2 O, dissolve in 6.6ml of deionized water, stir to dissolve;
[0044] (2) Weigh the γ-Al with high wear resistance that has been screened 2 O 3 Carrier 8.55g, mixed with the above-mentioned impregnating solution I, immersed in equal volume at 60°C by ultrasonic vibration, aged for 2 hours, dried at 110°C for 12 hours, and calcined at 600°C for 4 hours to obtain Ce 2 O 3 / La 2 O 3 Modified γ-Al 2 O 3 Carrier
[0045] (3) Preparation of immersion liquid II: Weigh 4.214g of Ca(NO 3 ) 3 ·4H 2 O, dissolve in 5.4ml of deionized water, stir to dissolve;
[0046] (4) The Ce obtained in step (2) 2 O 3 / La 2 O 3 Modified γ-Al 2 O 3 After the carrier is mixed with the impregnating solution II, it is immersed in equal volume at 75°C by ultrasonic vibration, aged for 4 hours, dried at 150°C for 12 hours, and then calcined at 800°C for 4 hours to obtain a composition of ...
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[0049] Example 2
[0050] (1) Preparation of immersion liquid I: Weigh 3.031g of Mg(NO 3 ) 3 ·6H 2 O is dissolved in 5.5ml of deionized water and stirred to dissolve;
[0051] (2) Weigh the γ-Al with high wear resistance that has been screened 2 O 3 Carrier 7.5g, mixed with the above-mentioned impregnating solution I, immersed in equal volume by ultrasonic vibration method at 60°C, aging for 2 hours, dried at 110°C for 8 hours, and calcined at 600°C for 2 hours to obtain MgO modification Γ-Al 2 O 3 Carrier
[0052] (3) Preparation of immersion solution II: Weigh 5.643 calcium acetate, dissolve it in 6.8ml deionized water, stir to dissolve;
[0053] (4) The MgO modified γ-Al obtained in step (2) 2 O 3 After the carrier is mixed with the impregnating solution II, it is immersed in equal volume at 70°C by ultrasonic vibration, aged for 4 hours, dried at 110°C for 12 hours, and then calcined at 800°C for 3 hours to obtain a composition of 20% CaO·5 %MgO·75%γ-Al 2 O 3 High wear resistance...
Example Embodiment
[0056] Example 3
[0057] (1) Preparation of immersion solution I: Weigh 2.056g magnesium gluconate and 0.258g La(NO 3 ) 3 ·6H 2 Dissolve O in 6.8ml deionized water, stir to dissolve;
[0058] (2) Weigh the γ-Al with high wear resistance that has been screened 2 O 3 Carrier 7.7g, mixed with the above-mentioned impregnating solution I, immersed in an equal volume at 60°C for 4 hours by ultrasonic vibration, dried at 100°C for 10 hours, and calcined at 800°C for 2 hours to obtain MgO / La 2 O 3 Modified γ-Al 2 O 3 Carrier
[0059] (3) Preparation of immersion solution II: Weigh 5.643g calcium acetate [Ca(CH 3 COO) 2 ], dissolved in 6.8ml deionized water, stirred to dissolve;
[0060] (4) The MgO / La obtained in step (2) 2 O 3 Modified γ-Al 2 O 3 After the carrier is mixed with the impregnating solution II, it is immersed in an equal volume at 60°C for 6 hours by ultrasonic vibration, then dried at 200°C for 10 hours, and then calcined at 800°C for 4 hours to obtain a composition of 20%CaO·2...
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