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Title: Sol-gel derived sorbents

Patent ·
OSTI ID:1174575

Described is a method for producing copolymerized sol-gel derived sorbent particles for the production of copolymerized sol-gel derived sorbent material. The method for producing copolymerized sol-gel derived sorbent particles comprises adding a basic solution to an aqueous metal alkoxide mixture for a pH.ltoreq.8 to hydrolyze the metal alkoxides. Then, allowing the mixture to react at room temperature for a precalculated period of time for the mixture to undergo an increased in viscosity to obtain a desired pore size and surface area. The copolymerized mixture is then added to an immiscible, nonpolar solvent that has been heated to a sufficient temperature wherein the copolymerized mixture forms a solid upon the addition. The solid is recovered from the mixture, and is ready for use in an active sampling trap or activated for use in a passive sampling trap.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-96OR22464
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
6,645,908
Application Number:
09/685,223
OSTI ID:
1174575
Country of Publication:
United States
Language:
English

References (8)

Sol−Gel Column Technology for Single-Step Deactivation, Coating, and Stationary-Phase Immobilization in High-Resolution Capillary Gas Chromatography journal November 1997
The Sol-Gel Preparation of Silica Gels journal July 1994
Infrared study of methanol adsorption on Aerosil. II. Physical adsorption at room temperature journal August 1967
Organometallic-Derived Ceramics journal January 1991
Reactive silica. I. Formation of a reactive silica by the thermal collapse of the methoxy groups of methylated Aerosil journal February 1969
Inorganic-Organic Hybrid Aerogels journal January 1994
Infrared study of methanol adsorption on Aerosil. I. Chemisorption at room temperature journal August 1967
Capture of Greenhouse Gases by Novel Aerogel Sorbents Prepared by Sol-Gel Technology
  • Attia, Yosry A.
  • Processing and Utilization of High-Sulfur Coals V - Proceedings of the Fifth International Conference on Processing and Utilization of High-Sulfur Coals, October 25–28, 1993, Lexington, Kentucky, U.S.A., p. 467-484 https://doi.org/10.1016/B978-0-444-81476-0.50043-0
book January 1993

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