کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1696733 1519138 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Infrared spectroscopy of NH4+-bearing and saturated clay minerals: A review of the study of layer charge
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Infrared spectroscopy of NH4+-bearing and saturated clay minerals: A review of the study of layer charge
چکیده انگلیسی

Infrared (IR) spectroscopy study of the layer charge of clay minerals demonstrates that the υ4 NH4+ band, assigned to the deformation vibrations of the NH4+ ion can be used to evaluate the charge characteristics of NH4+-bearing clay minerals. Total accessible charge, equivalent to cation exchange capacity (CEC), as well as tetrahedral and octahedral charge distribution in both dioctahedral and trioctahedral smectites are determined by quantifying the υ4 NH4+ band before and after lithium treatment. When using the KBr pressed pellets technique, the position and the shape of the υ4 NH4+ bands can distinguish exchangeable and fixed NH4+ in clay minerals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 34, Issues 1–4, October 2006, Pages 22–30
نویسندگان
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