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Article: Thermodynamics of NiAl 2O 4-NiFe 2O 4 spinel solid solutions

TitleThermodynamics of NiAl 2O 4-NiFe 2O 4 spinel solid solutions
Authors
KeywordsCation distributions
Heat of mixing
High temperature oxide melt solution calorimetry
Industrial processing
Inverse spinel
Issue Date2012
PublisherBlackwell Publishing, Inc. The Journal's web site is located at http://www.ceramicjournal.org
Citation
Journal of the American Ceramic Society, 2012, v. 95 n. 1, p. 423-430 How to Cite?
AbstractNiAl 2O 4, NiFe 2O 4, and their solid solution Ni(Fe zAl 1-z) 2O 4 have been studied using high temperature oxide melt solution calorimetry in molten 2PbO·B 2O 3 at 973 K. X-ray absorption near edge structure (XANES) measurements and Mössbauer spectroscopy investigation of the cation distribution showed that the Ni fraction in octahedral sites increases with increasing iron content. Despite the zero heat of mixing, the solid solution is not thermodynamically ideal in the sense of Raoult's law. The entropies of mixing are similar to those for a solid solution of two inverse spinels and the activities are approximated as the square of the mole fractions. The stability of the solid solutions relative to oxide components (NiO, Al 2O 3, Fe 2O 3) increases with increasing iron content. The solid solution is a suitable waste form for nickel from industrial processing with higher iron content potentially beneficial to its stability. © 2011 The American Ceramic Society.
Persistent Identifierhttp://hdl.handle.net/10722/150637
ISSN
2015 Impact Factor: 2.787
2015 SCImago Journal Rankings: 1.045
ISI Accession Number ID
Funding AgencyGrant Number
U.S. Department of Energy, Basic Energy SciencesFG0297ER-14749
Hong Kong Research Grants CouncilHKU 716310E
University Grants CouncilSEG_HKU10
Funding Information:

Financial supports from the U.S. Department of Energy, Basic Energy Sciences (Granted-FG0297ER-14749), Hong Kong Research Grants Council (HKU 716310E), and University Grants Council (SEG_HKU10) are gratefully acknowledged.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorLilova, KIen_US
dc.contributor.authorShih, Ken_US
dc.contributor.authorLilova, CWen_US
dc.contributor.authorLee, JFen_US
dc.contributor.authorNavrotsky, Aen_US
dc.date.accessioned2012-06-26T06:06:20Z-
dc.date.available2012-06-26T06:06:20Z-
dc.date.issued2012en_US
dc.identifier.citationJournal of the American Ceramic Society, 2012, v. 95 n. 1, p. 423-430en_US
dc.identifier.issn0002-7820en_US
dc.identifier.urihttp://hdl.handle.net/10722/150637-
dc.description.abstractNiAl 2O 4, NiFe 2O 4, and their solid solution Ni(Fe zAl 1-z) 2O 4 have been studied using high temperature oxide melt solution calorimetry in molten 2PbO·B 2O 3 at 973 K. X-ray absorption near edge structure (XANES) measurements and Mössbauer spectroscopy investigation of the cation distribution showed that the Ni fraction in octahedral sites increases with increasing iron content. Despite the zero heat of mixing, the solid solution is not thermodynamically ideal in the sense of Raoult's law. The entropies of mixing are similar to those for a solid solution of two inverse spinels and the activities are approximated as the square of the mole fractions. The stability of the solid solutions relative to oxide components (NiO, Al 2O 3, Fe 2O 3) increases with increasing iron content. The solid solution is a suitable waste form for nickel from industrial processing with higher iron content potentially beneficial to its stability. © 2011 The American Ceramic Society.en_US
dc.languageengen_US
dc.publisherBlackwell Publishing, Inc. The Journal's web site is located at http://www.ceramicjournal.orgen_US
dc.relation.ispartofJournal of the American Ceramic Societyen_US
dc.rightsThe definitive version is available at www.blackwell-synergy.com-
dc.subjectCation distributions-
dc.subjectHeat of mixing-
dc.subjectHigh temperature oxide melt solution calorimetry-
dc.subjectIndustrial processing-
dc.subjectInverse spinel-
dc.titleThermodynamics of NiAl 2O 4-NiFe 2O 4 spinel solid solutionsen_US
dc.typeArticleen_US
dc.identifier.emailShih, K: kshih@hkucc.hku.hken_US
dc.identifier.authorityShih, K=rp00167en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1111/j.1551-2916.2011.04941.xen_US
dc.identifier.scopuseid_2-s2.0-84855346066en_US
dc.identifier.hkuros205530-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84855346066&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume95en_US
dc.identifier.issue1en_US
dc.identifier.spage423en_US
dc.identifier.epage430en_US
dc.identifier.isiWOS:000298735300068-
dc.publisher.placeUnited Statesen_US
dc.relation.projectEnvironmental Bio-Nano Interface (EBNI) Characterization System-
dc.relation.projectSpinel Formation in Recycling Sludge-Incineration Ash for Fabrication of Ceramic Materials-
dc.identifier.scopusauthoridNavrotsky, A=35392647700en_US
dc.identifier.scopusauthoridLee, JF=7601468622en_US
dc.identifier.scopusauthoridPao, CW=8593541400en_US
dc.identifier.scopusauthoridShih, K=14072108900en_US
dc.identifier.scopusauthoridLilova, KI=14037727800en_US

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