کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
76955 49153 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The porosity of partly sintered nickel iron oxalates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
The porosity of partly sintered nickel iron oxalates
چکیده انگلیسی

The porosity of co-precipitated iron(II) and nickel(II) oxalate samples was investigated after thermolysis at different temperatures. Specific surface area values of the obtained nickel(II) ferrite samples have been determined by means of the BET method. Maximal values of the specific surface area and pore volume have been fixed for ferrite samples obtained when the thermolysis of oxalates was carried at 500 °C during an hour. Specific surface value in this case was 335 m2/g and pore volume 0.46 cm3/g. At comparatively higher temperatures of thermal decomposition (600 °C) the indicated parameters of porous structure decrease sharply: specific surface area value to 20–25 m2/g and pore volume – to 0.20 cm3/g. A similar picture observed also when thermolysis was carried at 500 °C during 2 h. In this case specific surface area value decreases to 30 m2/g and pore volume – to 0.22 cm3/g.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 89, Issues 1–3, 24 February 2006, Pages 33–38
نویسندگان
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