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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:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
United States Of America, Department Of Energy
Sponsoring Org.:
USDOE
OSTI Identifier:
1174645
Patent Number(s):
6,667,261
Assignee:
United States Of America, Department Of Energy OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

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., 2003. 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. doi:. https://www.osti.gov/servlets/purl/1174645.
@article{osti_1174645,
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 = {Tue Dec 23 00:00:00 EST 2003},
month = {Tue Dec 23 00:00:00 EST 2003}
}

Patent:

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  • 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, amore » 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.« less
  • A new zeolite, designated ZSM-22, is disclosed and claimed. The new zeolite has the composition, in the anhydrous state, expressed in terms of mole ratios of oxides as follows: (x)Q/sub 2/O:(y)M/sub 2// /SUB n/ O:(z)L/sub 2/O/sub 3/:100SiO/sub 2/ wherein Q/sub 2/O is the oxide form of an organic compound containing an element of Group 5-B (as defined in the Table of the Elements-National Bureau of Standards. Fischer Scientific Co. Catalog No. 5-702-10), e.g., N or P, preferably N, containing at least one alkyl or aryl group having at least 2 carbon atoms, M is an alkali or alkaline earth metalmore » having a valence n, e.g., Na, K, Cs or Li and wherein x=0.01-2.0, y=0-2.0, z=0-5, and L=Al. The new zeolite, ZSM-22, can be used in catalytic dewaxing of petroleum stocks in the presence or absence of added hydrogen.« less
  • Disclosed is a composite superconductive body comprising a porous glass matrix having a granular system of superconductive material disposed within the pores thereof. Adjacent grains of superconductive material are spatially separated but are electrically connected by electron tunneling. The critical field of these granular superconductors can be modified by processing either the porous glass matrix or the molten superconductor prior to impregnation of the superconductive material into the matrix.
  • Particles of carbonaceous matrices containing embedded electrode active material are prepared for vibratory loading within a porous electrically conductive substrate. In preparing the particles, active materials such as metal chalcogenides, solid alloys of alkali or alkaline earth metals along with other metals and their oxides in powdered or particulate form are blended with a thermosetting resin and particles of a volatile to form a paste mixture. The paste is heated to a temperature at which the volatile transforms into vapor to impart porosity at about the same time as the resin begins to cure into a rigid, solid structure. Themore » solid structure is then comminuted into porous, carbonaceous particles with the embedded active material. 1 figure, 4 tables.« less
  • Particles of carbonaceous matrices containing embedded electrode active material are prepared for vibratory loading within a porous electrically conductive substrate. In preparing the particles, active materials such as metal chalcogenides, solid alloys of alkali or alkaline earth metals along with other metals and their oxides in powdered or particulate form are blended with a thermosetting resin and particles of a volatile to form a paste mixture. The paste is heated to a temperature at which the volatile transforms into vapor to impart porosity at about the same time as the resin begins to cure into a rigid, solid structure. Themore » solid structure is then comminuted into porous, carbonaceous particles with the embedded active material.« less