Sunflower flower seed husk adsorption material and preparation method thereof
A technology for sunflower seeds and adsorption materials is applied in the field of preparation of adsorption materials, which can solve the problems of environmental pollution, waste of resources and the like, and achieve the effects of simple preparation process, low cost and environmental friendliness.
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Embodiment 1
[0026] Use sunflower seed shells to wash, mash, dry, grind, and pass through a 70-mesh sieve, and use 7% HNO 3 Reflux for 2 hours, then reflux with 3% NaOH for 1 hour, wash with water and dry; take 10 g of the obtained dried product and place it in a three-necked flask, add 20 ml of NaOH solution with a concentration of 2 mo / L and 60 ml of epichlorohydrin in sequence, and heat to reflux for 1 hour , filtered, cross-washed with acetone and water for 3-4 times, and dried at 60°C to obtain light yellow cross-linked cellulose; add a certain amount of cross-linked fiber to a three-necked bottle equipped with a reflux condenser and a stirrer Sulfonate, sodium 3-chloro-2-hydroxypropanesulfonate, 1mol / L dioxane aqueous solution and 1mol / L Na 2 CO 3 solution, stirred and reacted at 50°C for a certain period of time, and then the product was filtered out, and the product was washed three times with water and alcohol successively; after washing, it was vacuum-dried to obtain 2-hydroxy-3...
Embodiment 2
[0028] Use sunflower seed shells to wash, mash, dry, grind, and pass through a 70-mesh sieve, and use 9% HNO 3 Reflux for 3 hours, then reflux with 5% NaOH for 2 hours, wash with water and dry to obtain sunflower seed shell cellulose; take 20 g of the obtained cellulose and place it in a three-necked bottle, add 20 ml of NaOH solution with a concentration of 3 mo / L, 60 ml of ring Oxychloropropane, heated to reflux for 2 hours, filtered, cross-washed with acetone and water until neutral, dried at 80°C to obtain light yellow cross-linked cellulose; add a certain amount of The cross-linked cellulose, sodium 3-chloro-2-hydroxypropanesulfonate, 1mol / L dioxane aqueous solution and 1mol / L Na 2 CO 3 solution, shake it gently, stir and react under temperature control at 60°C for a certain period of time, then filter out the product, wash the product with water and alcohol three times successively; after washing, vacuum dry to obtain 2-hydroxy-3-sulfopropyl Cellulose ether, a sunflowe...
Embodiment 3
[0030] Use sunflower seed shells to wash, mash, dry, grind, and pass through a 70-mesh sieve, and use 8% HNO 3 Reflux for 3 hours, then reflux with 4% NaOH for 2 hours, wash with water and dry to obtain sunflower seed shell cellulose; take 20 g of the prepared cellulose and place it in a three-necked bottle, add 20 ml of NaOH solution with a concentration of 3 mo / L, 60 ml of Epichlorohydrin, heated to reflux for 2 hours, filtered; cross-washed with acetone and water until neutral, dried at 70°C to obtain light yellow cross-linked cellulose; pour 30g of the obtained cross-linked cellulose into a beaker, the beaker Put it in a water bath environment at 20°C, then add 20g of sodium bisulfite, 20g of sodium sulfite, and 100g of water into the beaker, and stir continuously with an electric stirrer. After reacting for 2 hours, add 1mol / L dioxane into the container Aqueous solution 100ml and 1mol / LNa 2 CO 3 100ml solution, reacted at 60°C for 1 hour, filtered out the product, washe...
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