کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1490877 992335 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of potassium salts of 12-tungstophosphoric acid
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Characterization of potassium salts of 12-tungstophosphoric acid
چکیده انگلیسی

Potassium salts of 12-tungstophosphoric acid with varying amounts of cation, KxH3 − xPW12O40 (x = 1, 2, 3) have been prepared and their characteristics investigated by thermal analyses, FT-IR and micro-Raman spectroscopy and SEM-EDS analysis. It was found that the number of replaced protons by potassium ions in the 12-tungstophosphoric acid structure has influence on the presence of different protonic species, their dynamic equilibrium and on the conductivity of salts. The results reported in this study have been applied to improve the structural model of insoluble acidic salts. It is shown that an acidic potassium salt presents a mixture of neutral salt and unreacted acid. The nature of this mixture depends on the number of replaced protons-oxonium ions by cations. Preliminary measurements with synthesized compounds as solid electrolytes in fuel cells have been done, too.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 45, Issue 11, November 2010, Pages 1679–1684
نویسندگان
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