Bulk modulus of basic sodalite, Na8[AlSiO4]6(OH)2·2H2O, a possible zeolitic precursor in coal-fly-ash-based geopolymers

Handle URI:
http://hdl.handle.net/10754/597700
Title:
Bulk modulus of basic sodalite, Na8[AlSiO4]6(OH)2·2H2O, a possible zeolitic precursor in coal-fly-ash-based geopolymers
Authors:
Oh, Jae Eun; Moon, Juhyuk; Mancio, Mauricio; Clark, Simon M.; Monteiro, Paulo J.M.
Abstract:
Synthetic basic sodalite, Na8[AlSiO4] 6(OH)2•2H2O, cubic, P43n, (also known as hydroxysodalite hydrate) was prepared by the alkaline activation of amorphous aluminosilicate glass, obtained from the phase separation of Class F fly ash. The sample was subjected to a process similar to geopolymerization, using high concentrations of a NaOH solution at 90 °C for 24 hours. Basic sodalite was chosen as a representative analogue of the zeolite precursor existing in Na-based Class F fly ash geopolymers. To determine its bulk modulus, high-pressure synchrotron X-ray powder diffraction was applied using a diamond anvil cell (DAC) up to a pressure of 4.5 GPa. A curve-fit with a truncated third-order Birch-Murnaghan equation of state with a fixed K'o = 4 to pressure-normalized volume data yielded the isothermal bulk modulus, K o = 43 ± 4 GPa, indicating that basic sodalite is more compressible than sodalite, possibly due to a difference in interactions between the framework host and the guest molecules. © 2010 Elsevier Ltd.
Citation:
Oh JE, Moon J, Mancio M, Clark SM, Monteiro PJM (2011) Bulk modulus of basic sodalite, Na8[AlSiO4]6(OH)2·2H2O, a possible zeolitic precursor in coal-fly-ash-based geopolymers. Cement and Concrete Research 41: 107–112. Available: http://dx.doi.org/10.1016/j.cemconres.2010.09.012.
Publisher:
Elsevier BV
Journal:
Cement and Concrete Research
KAUST Grant Number:
KUS-l1-004021
Issue Date:
Jan-2011
DOI:
10.1016/j.cemconres.2010.09.012
Type:
Article
ISSN:
0008-8846
Sponsors:
This publication was based on work supported in part by Award No. KUS-l1-004021 made by the King Abdullah University of Science and Technology (KAUST) and the by NIST Grant 60NANB10D014. The work for the Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
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Full metadata record

DC FieldValue Language
dc.contributor.authorOh, Jae Eunen
dc.contributor.authorMoon, Juhyuken
dc.contributor.authorMancio, Mauricioen
dc.contributor.authorClark, Simon M.en
dc.contributor.authorMonteiro, Paulo J.M.en
dc.date.accessioned2016-02-25T12:44:40Zen
dc.date.available2016-02-25T12:44:40Zen
dc.date.issued2011-01en
dc.identifier.citationOh JE, Moon J, Mancio M, Clark SM, Monteiro PJM (2011) Bulk modulus of basic sodalite, Na8[AlSiO4]6(OH)2·2H2O, a possible zeolitic precursor in coal-fly-ash-based geopolymers. Cement and Concrete Research 41: 107–112. Available: http://dx.doi.org/10.1016/j.cemconres.2010.09.012.en
dc.identifier.issn0008-8846en
dc.identifier.doi10.1016/j.cemconres.2010.09.012en
dc.identifier.urihttp://hdl.handle.net/10754/597700en
dc.description.abstractSynthetic basic sodalite, Na8[AlSiO4] 6(OH)2•2H2O, cubic, P43n, (also known as hydroxysodalite hydrate) was prepared by the alkaline activation of amorphous aluminosilicate glass, obtained from the phase separation of Class F fly ash. The sample was subjected to a process similar to geopolymerization, using high concentrations of a NaOH solution at 90 °C for 24 hours. Basic sodalite was chosen as a representative analogue of the zeolite precursor existing in Na-based Class F fly ash geopolymers. To determine its bulk modulus, high-pressure synchrotron X-ray powder diffraction was applied using a diamond anvil cell (DAC) up to a pressure of 4.5 GPa. A curve-fit with a truncated third-order Birch-Murnaghan equation of state with a fixed K'o = 4 to pressure-normalized volume data yielded the isothermal bulk modulus, K o = 43 ± 4 GPa, indicating that basic sodalite is more compressible than sodalite, possibly due to a difference in interactions between the framework host and the guest molecules. © 2010 Elsevier Ltd.en
dc.description.sponsorshipThis publication was based on work supported in part by Award No. KUS-l1-004021 made by the King Abdullah University of Science and Technology (KAUST) and the by NIST Grant 60NANB10D014. The work for the Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.en
dc.publisherElsevier BVen
dc.subjectBasic sodaliteen
dc.subjectBulk modulusen
dc.subjectFly ashen
dc.subjectGeopolymeren
dc.subjectHigh pressureen
dc.titleBulk modulus of basic sodalite, Na8[AlSiO4]6(OH)2·2H2O, a possible zeolitic precursor in coal-fly-ash-based geopolymersen
dc.typeArticleen
dc.identifier.journalCement and Concrete Researchen
dc.contributor.institutionUC Berkeley, Berkeley, United Statesen
dc.contributor.institutionLawrence Berkeley National Laboratory, Berkeley, United Statesen
kaust.grant.numberKUS-l1-004021en
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