Chitosan porous microballoon loaded copper iodide catalyst as well as preparation method and application thereof
A porous microsphere, cuprous iodide technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc. The production cost and environmental pollution are reduced, the equipment requirements are low, and the preparation process is simple.
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[0029] 1. Preparation of mixed solution: Take 5g of pharmaceutical grade chitosan powder (molecular weight: 100,000, degree of deacetylation: 95%) and polyethylene glycol (molecular weight: 20,000), dissolve in 2% 100ml acetic acid solution to prepare Mix the solution; add an appropriate amount of glutaraldehyde aqueous solution dropwise to the solution under high-speed stirring, with a cross-linking degree of 0.3%, continue stirring for 2 hours to form a homogeneous solution, and let it stand for 12 hours to defoam.
[0030] 2. Preparation of chitosan porous microspheres: drop the above mixed solution into a NaOH coagulation bath (concentration is 5%), and the droplets gradually precipitate in the coagulation bath to form white Semi-IPN microspheres; After the microspheres are washed with water until they are neutral, they are placed in a 90 oC water bath for continuous extraction for 6-8 hours to selectively dissolve the polymer porogen components to achieve pore formation; f...
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