Claims
- 1. An organic hydrophobic material selected from the group consisting of aerogels and xerogels.
- 2. The hydrophobic material of claim 1, produced by a method including sol-gel polymerization of a precursor and a solvent system.
- 3. The hydrophobic material of claim 2, additional including a drying operation selected from the group of supercritical solvent extraction for producing an aerogel and air drying for producing an xerogel.
- 4. The hydrophobic material of claim 2, wherein the precursor is 1,3-dimethoxybenzene or 1,3,5-trimethoxybenzene or methoxybenzene with formaldehyde, and wherein the solvent system is a non-aqueous solvent.
- 5. The hydrophobic material of claim 4, wherein the precursor is 1,3,5-trimethoxybenzene and formaldehyde in N,N-dimethylformamide.
- 6. The hydrophobic material of claim 2, wherein the precursor and the solvent system, comprises a solution of 1,3,5-trimethoxybenzene in N,N-dimethylformamide added to a mixture of Na2CO3H2O in at least about 35% formaldehyde solution in water.
- 7. The hydrophobic material of claim 2, wherein the precursor is 1,3,5-triydroxy benzene or 1,3-dihydroxy benzene with aldehydes, and wherein the solvent system is a non-aqueous solvent.
- 8. The hydrophobic material of claim 7, wherein the precursor is 1,3,5-trihydroxybenzene and propanal in acetonitrile.
- 9. The hydrophobic material of claim 2, wherein the precursor and solvent system comprises of 1,3,5-tirhydroxybenzene trihydrate dissolved in acetonitrile and to which is added acetonitrile with triethyleamine and to which is added propanal.
- 10. The hydrophobic material of claim 9, additionally including the addition of acetonitrile with concentrated hydrochloric acid.
- 11. A method for producing an organic hydrophobic material, which includes:
providing an alkylated phenol derivative, providing a solvent system, and carrying out sol-gel polymerization of a mixture of the alkylated phenol derivative and the solvent system.
- 12. The method of claim 11, additionally including a drying operation to produce one of a hydrophobic organic aerogel or a hydrophobic organic xerogel.
- 13. The method of claim 12, wherein the drying operation to produce the aerogel is carried out using supercritical solvent extraction.
- 14. The method of claim 12, wherein the drying operation to produce the xerogel is carried out by air drying.
- 15. The method of claim 11, wherein the alkylated phenol derivative includes a quantity of formaldehyde, and quantity of material selected form the group consisting of 1,3-diemthoxybenzene, 1,3-5-trimethoxybenzene and methoxybenzene.
- 16. The method of claim 11, wherein the sol-gel polymerization is carried out with 1,3,5-trimethoxybenzene and formaldehyde in N,N-dimethylformamide.
- 17. The method of claim 11, wherein the sol-gel polymerization is carried out using:
a solution of 1,3,5-trimethyoxybenzene in N,N-dimethylformamide, adding the solution to a mixture of Na2CO3H2O in a formaldelyde solution in water to form a combined solution, stirring the combined solution at room temperature for a time period, pouring the combined solution into at least one container, sealing the container, and curing the contained combined solution at a temperature above room temperature for a time period.
- 18. The method of claim 17, wherein the 1,3,5-trimethoxybenzene comprises at least about 15.0 g, 0.112 mol.
- 19. The method of claim 17, wherein the N,N-dimethylformamide comprises at least about 125 mL.
- 20. The method of claim 17, wherein the NagCO3H2O comprises at least about 0.125 g, 0.0011 mol.
- 21. The method of claim 17, wherein the formaldehyde solution in water, comprises at least about 35% formaldehyde solution (22.4 g, 0.224 mol) in water.
- 22. The method of claim 17, wherein the stirring time period is at least about 0.4 hr.
- 23. The method of claim 17, wherein the curing is carried out at above 75° C. for a time period of at least 2 days.
- 24. The method of claim 11, wherein the sol-gel polymerization is carried out using:
a stirring solution of 1,3,5-trihydroxybenzene trihydrate in acetonitrile, adding to the stirring solution a quantity of acetonitile with triethyleamine, adding to the thus formed solution a quantity of propanal, containing the thus formed solution in a vessel covering the vessel containing the solution, placing the vessel in an oven at a selected temperature or a specified time period, cooling the solution to room temperature, and adding to the cooled solution a quantity of acetonitrile with concentrated hydrochloric acid, thereby forming a gel.
- 25. The method of claim 24, additionally including:
extracting the gel with liquid CO2, and then supercritically extracting the CO2 to produce an aerogel.
- 26. The method of claim 25, wherein the thus produced aerogel has a density of at least about 125 mg/cc, a surface area of at least about 400 m2/g, an average pore diameter of at least about 25 nm, and a pore volume of at least about 3.00 cm3/g.
- 27. The method of claim 24, wherein the 1,3,5-trihydroxybenzene trihydrate comprises at least about 0.4 g (0.0025 mol), and the acetonitrile comprises at least about 8 g (10 mL).
- 28. The method of claim 24, wherein the added acetonitile with triethyleamine comprises at least about 0.4 g of acetonitile with at least about 0.15 mL.
- 29. The method of claim 24, wherein the quantity of propanol comprises at least about 0.3 g (0.005 mol).
- 30. The method of claim 24, wherein the temperature is at least 75° C. and the time period is at least ¾ hour.
- 31. The method of claim 24, wherein the quantity of acetonitrile with concentrated hydrochloric acid comprises at least 0.4 g of acetonitrile with at least about 0.025 mL (0.0030 mol) of concentrated hydrochloric acid.
- 32. The organic hydroophobic material of claim 1, comprising an aerogel having a density of at least about 125 mg/cc, and a surface area of at least about 400 m2/g.
- 33. The aerogel of claim 31, additionally having a pore diameter of at least about 25 nm, and a pore volume of at least about 3.00 cm3/g.
- 34. The hydrophobic material of claim 2, wherein the solvent system is selected from the group consisting of DMSO, THF, acetone, and acetonitrile.
RELATED APPLICATION
[0001] This application relates to U.S. Provisional Application No. 60/292,238 filed May 18, 2001 and claims priority thereof.
PREPARATION OF HYDROPHOBIC ORGANIC AEORGELS
[0002] The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.
Provisional Applications (1)
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Number |
Date |
Country |
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60292238 |
May 2001 |
US |