کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
146336 456367 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of mercury sorbent including metal oxides with layered carbonates material
ترجمه فارسی عنوان
سنتز سوربیت جیوه شامل اکسید فلزی با مواد کربنات لایه ای
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Mercury sorbents of M–Al–CO3 (M = Mg2+, Zn2+, Cu2+, and Mn2+ ions) were prepared.
• Sorption Hg was tested at 30–400 °C by hydrothermal conditions and fixed-bed reactor.
• Mn/Al predominated the materials with embodiment of Hg compositions that were double that of MnO.
• Elemental mercury sorption on Mn/Al sorbents also exhibited a maximum slope at 300 °C.

Mercury sorbents M–Al–CO3 were synthesized by coprecipitating M2+ and Al3+ in an alkaline NaOH/Na2CO3 solution, where M2+ corresponds to Mg2+, Zn2+, Cu2+, and Mn2+ ions. The formation of a layered double hydroxide structure significantly enhanced the surface area of the synthetic materials. Mercury removal tests were conducted under hydrothermal conditions between 30 and 250 °C and in a fixed-bed reactor at 100–400 °C. Energy-dispersive X-ray spectroscopy clearly indicated that the principal elements were embedded in the spent sorbents along with Hg. This analysis showed that Mn/Al predominated the materials with compositions that were double that of MnO, followed by Zn, Mg, and Cu. The mercury sorption curve exhibited a maximum slope at 300 °C for the Mn/Al sorbent. These findings demonstrate the potential of these synthetic sorbents under medium to high temperature conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 277, 1 October 2015, Pages 79–85
نویسندگان
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