A kind of chitosan embedded palladium nanofiber catalyst and its preparation method and application
A chitosan nanometer and chitosan technology, which is applied in the field of chitosan-embedded palladium nanofiber catalyst and its preparation, can solve the problems of reducing the physical or chemical adsorption performance of a palladium catalytic center, affecting the catalytic performance, and palladium clustering. , to achieve high specific surface area, improve solubility, and improve solvent resistance.
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[0018] The present invention will be further described below in conjunction with the accompanying drawings.
[0019] The preparation method of chitosan-embedded palladium nanofiber membrane, taking 0.90g of chitosan with a molecular weight of 200,000 and 0.10g of sodium polyacrylate with a molecular weight of 4-5 million, dissolved in 24.0g of trifluoroacetic acid / acetic acid at 40°C In an aqueous solution, including 4.0 g of trifluoroacetic acid, 12 g of acetic acid, and 7 g of water, a uniform solution was obtained after stirring at 40°C. 25mgPdCl 2 and 18mgNaCl are dissolved in 1g of water to obtain red Na 2 PdCl 4 aqueous solution. Na 2 PdCl 4 Add the aqueous solution into the chitosan / sodium polyacrylate solution, and stir vigorously at 60° C. to obtain a mixed solution of palladium / chitosan / sodium polyacrylate.
[0020] Inject the spinning solution into a 20 mL syringe with a flat needle with an inner diameter of 0.51 mm, fix the syringe in the electrospinning appa...
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