Preparation of alkaline earth carbonates and oxides by the EDTA-gel process

Hdl Handle:
http://hdl.handle.net/10149/98415
Title:
Preparation of alkaline earth carbonates and oxides by the EDTA-gel process
Authors:
Hodgson, S. N. B. (Simon); Shen, X.; Sale, F. R. (Frank)
Affiliation:
Loughborough University. Institute of Polymer Technology and Materials Engineering; University of Manchester Institute of Science and Technology (UMIST). Manchester Materials Science Centre.
Citation:
Hodgson, S. N. B., Shen, X. and Sale, F. R. (2000) 'Preparation of alkaline earth carbonates and oxides by the EDTA-gel process', Journal of Materials Science, 35 (21), pp.5275-5282.
Publisher:
Springer Verlag
Journal:
Journal of Materials Science
Issue Date:
Nov-2000
URI:
http://hdl.handle.net/10149/98415
DOI:
10.1023/A:1004826324526
Abstract:
The ethylene-diamine-tetra-acetic acid (EDTA)-gel process has been used to produce carbonates and oxides of the alkaline earth elements Ba, Sr and Ca and their solid solutions. These materials have a range of potential applications including electron emission and catalysis. Gels of composition Ba-EDTA, Sr-EDTA, [Ba0.5Sr0.5]-EDTA, [Ba0.5Sr0.45Ca0.05]-EDTA were prepared at pH 6 from aqueous solutions of the alkaline earth nitrates and EDTA and their thermal decomposition studied by TGA/DSC. The gels and the products derived from calcination of these gels at different temperatures have been characterized by FTIR, XRD and SEM, and shown to have high chemical homogeneity and fine particle size. Decomposition of the gels to the carbonate form occurred below 300 °C with subsequent formation of the oxide occurring on heat treatment at temperatures ranging from approximately 800 °C to >1000 °C depending upon gel composition. The process route is suitable for the production of particulate materials or porous coatings.
Type:
Article
Language:
en
Keywords:
calcination; carbonates; electron emission; heat treatment; pH effects; pyrolysis; scanning electron microscopy
ISSN:
0022-2461; 1573-4803
Rights:
Author can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 11/05/2010]
Citation Count:
16 [Scopus, 11/05/2010]

Full metadata record

DC FieldValue Language
dc.contributor.authorHodgson, S. N. B. (Simon)en
dc.contributor.authorShen, X.en
dc.contributor.authorSale, F. R. (Frank)en
dc.date.accessioned2010-05-11T08:17:06Z-
dc.date.available2010-05-11T08:17:06Z-
dc.date.issued2000-11-
dc.identifier.citationJournal of Materials Science; 35(21):5275-5282en
dc.identifier.issn0022-2461-
dc.identifier.issn1573-4803-
dc.identifier.doi10.1023/A:1004826324526-
dc.identifier.urihttp://hdl.handle.net/10149/98415-
dc.description.abstractThe ethylene-diamine-tetra-acetic acid (EDTA)-gel process has been used to produce carbonates and oxides of the alkaline earth elements Ba, Sr and Ca and their solid solutions. These materials have a range of potential applications including electron emission and catalysis. Gels of composition Ba-EDTA, Sr-EDTA, [Ba0.5Sr0.5]-EDTA, [Ba0.5Sr0.45Ca0.05]-EDTA were prepared at pH 6 from aqueous solutions of the alkaline earth nitrates and EDTA and their thermal decomposition studied by TGA/DSC. The gels and the products derived from calcination of these gels at different temperatures have been characterized by FTIR, XRD and SEM, and shown to have high chemical homogeneity and fine particle size. Decomposition of the gels to the carbonate form occurred below 300 °C with subsequent formation of the oxide occurring on heat treatment at temperatures ranging from approximately 800 °C to >1000 °C depending upon gel composition. The process route is suitable for the production of particulate materials or porous coatings.en
dc.language.isoenen
dc.publisherSpringer Verlagen
dc.rightsAuthor can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 11/05/2010]en
dc.subjectcalcinationen
dc.subjectcarbonatesen
dc.subjectelectron emissionen
dc.subjectheat treatmenten
dc.subjectpH effectsen
dc.subjectpyrolysisen
dc.subjectscanning electron microscopyen
dc.titlePreparation of alkaline earth carbonates and oxides by the EDTA-gel processen
dc.typeArticleen
dc.contributor.departmentLoughborough University. Institute of Polymer Technology and Materials Engineering; University of Manchester Institute of Science and Technology (UMIST). Manchester Materials Science Centre.en
dc.identifier.journalJournal of Materials Scienceen
ref.citationcount16 [Scopus, 11/05/2010]en
or.citation.harvardHodgson, S. N. B., Shen, X. and Sale, F. R. (2000) 'Preparation of alkaline earth carbonates and oxides by the EDTA-gel process', Journal of Materials Science, 35 (21), pp.5275-5282.-
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