A kind of preparation method of multi-metal composite oxygen carrier
A technology of oxygen carrier and multi-metal, which is applied in the field of preparation of multi-metal composite oxygen carrier to achieve high conversion rate of ethane or propane, increase conversion rate and prolong reaction time
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Embodiment 1
[0035] The specific process of preparing multi-metal composite oxygen carrier in this embodiment is as follows:
[0036] (1) Preparation of alumina carrier: screen 500g of alumina particles with a particle size of 80-800 μm, add 3-6g of scallop powder, mix well, add 100ml of 2% nitric acid aqueous solution dropwise, and place in a 100°C refrigerator after fully mixing After drying in an oven for 48 hours, calcining in a muffle furnace at 500-600°C to obtain alumina carrier particles;
[0037] (2) First mix the binder and clay according to the mass ratio of 2:8 and dissolve them in deionized water to form a slurry with a mass fraction of 50%, and then fully disperse the alumina carrier prepared in step (1) In the prepared slurry, the slurry is then spray-dried, and sieved to obtain particles with a particle size of 80-600 μm;
[0038] (3) getting mass fraction is 99% ferric nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 O) 200g and 99.9% cerium nitrate hexahydrate (Ce(NO 3 ) 3 ·6H...
Embodiment 2
[0051] The specific process of preparing multi-metal composite oxygen carrier in this embodiment is as follows:
[0052] (1) Preparation of alumina carrier: screen 500g of alumina particles with a particle size of 80-800 μm, add 3-6g of scallop powder, mix well, add 100ml of 2% nitric acid aqueous solution dropwise, and place in a 100°C refrigerator after fully mixing After drying in an oven for 48 hours, calcining in a muffle furnace at 500-600°C to obtain alumina carrier particles;
[0053] (2) First mix the binder and clay according to the mass ratio of 4:6 and dissolve them in deionized water to form a slurry with a mass fraction of 60%, and then fully disperse the alumina carrier prepared in step (1) In the prepared slurry, the slurry is then spray-dried, and sieved to obtain particles with a particle size of 80-600 μm;
[0054] (3) getting mass fraction is 99% ferric nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 O) 100g and 99.5% cerium nitrate hexahydrate (Ce(NO 3 ) 3 ·6H...
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Abstract
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