کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4908493 | 1362580 | 2017 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase transformations during the zeolitization of fly ashes
ترجمه فارسی عنوان
تغییرات فاز در طول زئولیتیزاسیون خاکسترهای پرواز
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کلمات کلیدی
خاکستر پرواز پیش درمان سنتز هیدروترمال زئولیت،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The reactivity of a fly ash discarded from a thermoelectric power station was evaluated in terms of its hydrothermal conversion into NaA-containing products. The influence of ash pretreatments and the effect of changes in the synthesis mixture composition on the evolution of the solid phase toward its conversion into zeolitic materials were studied. Activation by milling was not as effective as alkaline fusion. The highest levels of fly ash reactivity were obtained by applying an alkaline fusion treatment using sodium carbonate at 800 °C. It was observed that this particular ash activation induces a solid reordering that generates crystalline materials identified as NaAlSiO2 polymorphs that in turn are easily transformed into zeolite structures. Synthesis conditions for ash zeolitization as high as 60% were established.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 5, Issue 2, April 2017, Pages 1548-1553
Journal: Journal of Environmental Chemical Engineering - Volume 5, Issue 2, April 2017, Pages 1548-1553
نویسندگان
J.D. Monzón, A.M. Pereyra, M.S. Conconi, E.I. Basaldella,