کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
194026 459783 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of γ-LiAlO2 powder on ionic conductivity of coexisting single alkali carbonates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of γ-LiAlO2 powder on ionic conductivity of coexisting single alkali carbonates
چکیده انگلیسی

The electrical conductivity of alkali molten carbonates coexisting with γ-LiAlO2 powders have been measured by ac impedance method. The temperature and composition dependence of the electrical conductivity are investigated. The effects of the solid phase upon the ionic species are discussed. The electrical conductivity varies with the liquid content and drastically increases at ca. 30 vol.%. The Arrhenius plot shows an increase of the electrical conductivity with increasing temperature. A significant value of the electrical conductivity below the salt melting point is observed. This indicates the existence of a non-frozen phase assuming conduction within the system. The activation energy increases with a decrease of apparent average thickness of the liquid layer. The influence of the solid system is conspicuous in Na2CO3 mixtures rather than in K2CO3 or Li2CO3 one. This shows that the order of magnitude of perturbations by the solid phase depends also on the cationic species associated within the system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 53, Issue 1, 20 November 2007, Pages 71–78
نویسندگان
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