Preparation method of super-macroporous gel material with high specific surface area
A high specific surface area, cryogel technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problems of small adsorption capacity, low specific surface area of cryogel, etc. Hydrothermal stability, strong acid effect
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Embodiment 1
[0027] In parts by weight, 30 parts of epoxy resin, 10 parts of zeolite molecular sieve, 1 part of Tween-80, 1 part of n-pentane, and 5 parts of sulfuric acid with a mass fraction of 20% were weighed respectively, and epoxy resin, zeolite molecular sieve, Mix Tween-80 and n-pentane, stir at a high speed of 1000r / min for 10min to obtain the mixture, add sulfuric acid with a mass fraction of 20% to the mixture, and continue stirring for 1h at a temperature of 50°C to obtain the reactant , keep the reactants at a temperature of 55°C for 20 hours to obtain a semi-finished product, soak the semi-finished product in acetone for 20 hours and take it out to obtain a soaked semi-finished product, mix the soaked semi-finished product with acetone at a mass ratio of 1:10, seal it, and place it in Treat in an oven at a temperature of 50°C for 20 hours to obtain a composite foam material; put the composite foam material in a muffle furnace, and heat it from room temperature to 300°C at a ra...
Embodiment 2
[0029] In parts by weight, 40 parts of epoxy resin, 15 parts of zeolite molecular sieve, 3 parts of Tween-80, 2 parts of n-pentane, and 7 parts of sulfuric acid with a mass fraction of 20% were weighed respectively, and epoxy resin, zeolite molecular sieve, Mix Tween-80 and n-pentane, stir at a high speed of 1100r / min for 13min to obtain the mixture, add sulfuric acid with a mass fraction of 20% to the mixture, and continue stirring at 55°C for 1.5h to obtain the reaction The reactant is kept at a temperature of 60°C for 22 hours to obtain a semi-finished product. The semi-finished product is soaked in acetone for 20-24 hours and then taken out to obtain a soaked semi-finished product. The soaked semi-finished product and acetone are mixed according to the mass ratio of 1:10, and sealed. And put it in an oven with a temperature of 55°C for 22 hours to obtain a composite foam material; place the composite foam material in a muffle furnace, and heat it from room temperature to 32...
Embodiment 3
[0031] In parts by weight, take respectively 50 parts of epoxy resin, 20 parts of zeolite molecular sieve, 5 parts of Tween-80, 3 parts of n-pentane, 10 parts of mass fraction of 20% sulfuric acid, epoxy resin, zeolite molecular sieve, Mix Tween-80 and n-pentane, stir at a high speed of 1200r / min for 15min to obtain the mixture, add sulfuric acid with a mass fraction of 20% to the mixture, and continue stirring at 60°C for 2h to obtain the reactant , heat the reactant at 65°C for 24 hours to obtain a semi-finished product, soak the semi-finished product in acetone for 24 hours and take it out to obtain a soaked semi-finished product, mix the soaked semi-finished product with acetone at a mass ratio of 1:10, seal it, and place it in Treat in an oven at a temperature of 60°C for 24 hours to obtain a composite foam material; place the composite foam material in a muffle furnace, and heat it from room temperature to 350°C at 10°C / min in a nitrogen atmosphere, keep the temperature a...
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