A kind of oxygen carrier preparation method for propane chemical chain dehydrogenation to propylene
A chemical chain, oxygen carrier technology, applied in chemical instruments and methods, organic chemistry, metal/metal oxide/metal hydroxide catalysts, etc. High temperature carbon deposition inactivation and other problems, to achieve the effect of increasing wear resistance, high dehydrogenation activity, and high propylene selectivity
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[0029] The specific process of preparing the manganese-based oxygen carrier with core-shell structure in this embodiment is as follows:
[0030] (1) Preparation of alumina carrier: screen 500g of alumina particles with a particle size of 100-500 μm, add 3-5g 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;
[0031] (2) Preparation of manganese-containing alumina carrier: get 200 g of alumina carrier particles obtained in step (1), immerse in 500 ml of manganese nitrate deionized aqueous solution with a mass fraction of 50%, obtain the impregnated carrier after 24 hours of immersion, and then drying the impregnated particles at 90-120°C for 48 hours, and calcining at 650°C for 3-5 hours to obtain the manganese-containing alumina carrier;
[0032] (3) Preparation of manganese...
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