Silane-modified clay

Details Silane-modified clay Silane-modified clay

1997-02-03

1998-10-20

Bos, Steven

Liquid purification or separation

Processes

Ion exchange or selective sorption

210691, B01D 1500

Patent

active

058242260

ABSTRACT:
Clay particles with organo silane-modified surfaces are provided along with a process for their preparation. The silane-modified clay is relatively easily and reliably produced by reacting clay with a R-substituted halosilane (R being a hydrophobic group) in a polar solvent containing a tertiary amine. The produced silanized clay is stable over a wide range of storage and use conditions. Contacting processes for using the silane-modified clay to remove organic contaminants from aqueous media are also provided. After use, the silane-modified clay particles can be regenerated, treated and reused for such contaminant removal.

REFERENCES:
patent: 3725302 (1973-04-01), Shimely et al.
patent: 4517094 (1985-05-01), Beall
patent: 5151155 (1992-09-01), Cody et al.
patent: 5292908 (1994-03-01), Onikata et al.
Boyd et al., Nature 333:345-347 (1988).
Boyd et al. in "Role of Layer Change in Organic Contaminant Sorption by Organo-Clays," Clay Minerals Society Pre-Meeting Workshop on the Layer Change Characteristics of Clays, Saskatoon, Sask. CA (1992).
Chladek et al., J. Chrom. Sci. 22:313-320 (1984).
Hagen et al., Anal. Chim. Acta 236:157-164 (1990).
Hutta et al., J. Chrom. 470;223-233 (1989).
Junk et al., Anal. Chem. 60:451-454 (1988).
Lee et al., Environ. Sci & Tech. 23:1365-1372 (1989).
Lee et al., J. Chem. Soc., Far. Trans 85(9):2953-2962 (1989).
Lee et al., Clays & Clay Min. 38(2):113-120 (1990).
Plueddemann, Silane Coupling Agents, 2nd ed., Plenum Press, NY (1991), pp. 8 and 187-188.
Poole & Poole, Chromatography Today, Elsevier Pub. Co., New York, N.Y. (1991), pp. 313-338.

Affiliated with

Also associated with

Rating

Silane-modified clay does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Silane-modified clay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silane-modified clay will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-241208