کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5438018 1398180 2017 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thorium(IV) phosphate-triphosphate: A valuable ceramic material obtained by thermal treatment of a layered ammonium-thorium(IV) phosphate. Kinetic analysis of the transformation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Thorium(IV) phosphate-triphosphate: A valuable ceramic material obtained by thermal treatment of a layered ammonium-thorium(IV) phosphate. Kinetic analysis of the transformation
چکیده انگلیسی
Morphological 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 14, 1 October 2017, Pages 10776-10783
نویسندگان
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