English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/173292
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Thorium(IV) phosphate-triphosphate: A valuable ceramic material obtained by thermal treatment of a layered ammonium-thorium(IV) phosphate. Kinetic analysis of the transformation

AuthorsIglesias, Isabel; Alfonso, Belén F.; Amghouz, Z.; Trobajo, Camino ; García, José R. ; Huidobro, José A.
KeywordsRadionuclides immobilization
Kinetics
Thorium phosphates
Thermal decomposition
Issue Date2017
PublisherElsevier
CitationCeramics International 43(14): 10776-10783 (2017)
AbstractMorphological and structural characterization of both (NH4)2Th(PO4)2·H2O (1) and Th2(PO4)(P3O10) (2) have been performed by using electron microscopy techniques (SEM, HR-TEM, DF-STEM and SAED), which reveal a morphological transformation from star-shaped particles to irregularly rhombohedral-like aggregates after thermal treatment at 1000 °C. The 1 → 2 thermal conversion is monitored by thermogravimetric analysis and the activation energy has been obtained by using isoconversional methods. A discrete model describing the kinetic process is obtained and so the original data set can be reconstructed and compared with the experimental measures. By using heating rates different from those involved for getting the model, predictions can be also made. The procedure has worked efficiently in recovering the original kinetic parameters in two theoretical simulations.
URIhttp://hdl.handle.net/10261/173292
Identifiersdoi: 10.1016/j.ceramint.2017.05.091
issn: 0272-8842
e-issn: 1873-3956
Appears in Collections:(CINN) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.