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Title: Open-cell glass crystalline porous material

Abstract

An open-cell glass crystalline porous material made from hollow microspheres which are cenospheres obtained from fly ash, having an open-cell porosity of up to 90 vol. % is produced. The cenospheres are separated into fractions based on one or more of grain size, density, magnetic or non-magnetic, and perforated or non-perforated. Selected fractions are molded and agglomerated by sintering with a binder at a temperature below the softening temperature, or without a binder at a temperature about, or above, the softening temperature but below the temperature of liquidity. The porous material produced has an apparent density of 0.3-0.6 g/cm.sup.3, a compressive strength in the range of 1.2-3.5 MPa, and two types of openings: through-flow wall pores in the cenospheres of 0.1-30 micrometers, and interglobular voids between the cenospheres of 20-100 micrometers. The porous material of the invention has properties useful as porous matrices for immobilization of liquid radioactive waste, heat-resistant traps and filters, supports for catalysts, adsorbents and ion-exchangers.

Inventors:
 [1];  [1];  [1];  [1];  [2];  [2];  [3];  [3];  [4];  [4];  [4]
  1. (Krasnoyarsk, RU)
  2. (Zheleznogorsk, RU)
  3. (Saint-Petersburg, RU)
  4. (Idaho Falls, ID)
Issue Date:
Research Org.:
BECHTEL BWXT IDAHO LLC
OSTI Identifier:
874700
Patent Number(s):
6444162
Assignee:
The United States of America as represented by the United States Department (Washington, DC) INEEL
DOE Contract Number:  
AC07-99ID13727
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
open-cell; glass; crystalline; porous; material; hollow; microspheres; cenospheres; obtained; fly; ash; porosity; 90; vol; produced; separated; fractions; based; grain; size; density; magnetic; non-magnetic; perforated; non-perforated; selected; molded; agglomerated; sintering; binder; temperature; below; softening; liquidity; apparent; 03-06; gcmsup3; compressive; strength; range; 12-35; mpa; types; openings; through-flow; wall; pores; 01-30; micrometers; interglobular; voids; 20-100; properties; useful; matrices; immobilization; liquid; radioactive; waste; heat-resistant; traps; filters; supports; catalysts; adsorbents; ion-exchangers; fly ash; radioactive waste; grain size; hollow microspheres; /264/501/

Citation Formats

Anshits, Alexander G., Sharonova, Olga M., Vereshchagina, Tatiana A., Zykova, Irina D., Revenko, Yurii A., Tretyakov, Alexander A., Aloy, Albert S., Lubtsev, Rem I., Knecht, Dieter A., Tranter, Troy J., and Macheret, Yevgeny. Open-cell glass crystalline porous material. United States: N. p., 2002. Web.
Anshits, Alexander G., Sharonova, Olga M., Vereshchagina, Tatiana A., Zykova, Irina D., Revenko, Yurii A., Tretyakov, Alexander A., Aloy, Albert S., Lubtsev, Rem I., Knecht, Dieter A., Tranter, Troy J., & Macheret, Yevgeny. Open-cell glass crystalline porous material. United States.
Anshits, Alexander G., Sharonova, Olga M., Vereshchagina, Tatiana A., Zykova, Irina D., Revenko, Yurii A., Tretyakov, Alexander A., Aloy, Albert S., Lubtsev, Rem I., Knecht, Dieter A., Tranter, Troy J., and Macheret, Yevgeny. Tue . "Open-cell glass crystalline porous material". United States. https://www.osti.gov/servlets/purl/874700.
@article{osti_874700,
title = {Open-cell glass crystalline porous material},
author = {Anshits, Alexander G. and Sharonova, Olga M. and Vereshchagina, Tatiana A. and Zykova, Irina D. and Revenko, Yurii A. and Tretyakov, Alexander A. and Aloy, Albert S. and Lubtsev, Rem I. and Knecht, Dieter A. and Tranter, Troy J. and Macheret, Yevgeny},
abstractNote = {An open-cell glass crystalline porous material made from hollow microspheres which are cenospheres obtained from fly ash, having an open-cell porosity of up to 90 vol. % is produced. The cenospheres are separated into fractions based on one or more of grain size, density, magnetic or non-magnetic, and perforated or non-perforated. Selected fractions are molded and agglomerated by sintering with a binder at a temperature below the softening temperature, or without a binder at a temperature about, or above, the softening temperature but below the temperature of liquidity. The porous material produced has an apparent density of 0.3-0.6 g/cm.sup.3, a compressive strength in the range of 1.2-3.5 MPa, and two types of openings: through-flow wall pores in the cenospheres of 0.1-30 micrometers, and interglobular voids between the cenospheres of 20-100 micrometers. The porous material of the invention has properties useful as porous matrices for immobilization of liquid radioactive waste, heat-resistant traps and filters, supports for catalysts, adsorbents and ion-exchangers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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