کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
237824 465727 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental investigation of the grain size dependence of the hydrolysis of LiH powder
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Experimental investigation of the grain size dependence of the hydrolysis of LiH powder
چکیده انگلیسی

The hydrolysis reaction of LiH powder has been investigated in order to determine the products, rates and mechanisms of this reaction and the influence of the experimental parameters. Raman spectroscopy, X-ray diffraction and gravimetric analysis were used. It was shown that the product of hydrolysis was the hydroxide of lithium (LiOH) for low partial pressure of water (≈50 Pa) and LiOH·H2O for a higher partial pressure of water (>2000 Pa). Moreover, data obtained using gravimetric analysis inside a glove box containing a controlled partial pressure of water (500 ppmv/50 Pa at 25 °C) were used to determine the rate of the reaction versus particle size. The experimental results were consistent with the shrinking core model showing that initially, the conversion rate is controlled by the chemical reaction.

Graphical AbstractThe hydrolysis reaction of LiH powder has been investigated in order to determine the products, rates and mechanisms of this reaction and the influence of the experimental parameters. It was shown that the product of hydrolysis was the hydroxide of lithium (LiOH) for low partial pressure of water (≈50 Pa) and LiOH·H2O for a higher partial pressure of water (>2000 Pa). The experimental results obtained by gravimetric analysis were consistent with the shrinking core model.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 208, Issue 2, 25 March 2011, Pages 318–323
نویسندگان
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