کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1696002 | 1011884 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Expansion behaviour of commercial vermiculites at 1000 °C
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Expansion behaviour of commercial vermiculites at 1000 °C Expansion behaviour of commercial vermiculites at 1000 °C](/preview/png/1696002.png)
چکیده انگلیسی
Commercial vermiculites from different places were studied in order to know the cause of their different behaviour after abrupt heating at 1000 °C. Mössbauer spectroscopy provided Fe2+ and Fe3+ contents and allowed identification of both tetrahedral and octahedral iron. The Fe2+ content was higher in type-2 vermiculites (with K+− or > 1 and/or Na+ and/or Ca2+ with or without Mg2+ as the principal interlayer cations) than in type-1 vermiculites (with Mg2+ or Mg2+ and K+ (< 1) as the principal interlayer cations). The higher iron content seemed to facilitate the fixing of potassium ions. This was responsible of the larger expansion after abrupt heating at 1000 °C for 1 min.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 48, Issue 3, April 2010, Pages 492–498
Journal: Applied Clay Science - Volume 48, Issue 3, April 2010, Pages 492–498
نویسندگان
C. Marcos, I. Rodríguez,