05 مهر 1400

محمدهاشم صدق کردار

مرتبه علمی:
نشانی: دانشکده مهندسی نفت، گاز و پتروشیمی - گروه مهندسی شیمی
تحصیلات: مهندسی شیمی
تلفن:
دانشکده: دانشکده مهندسی نفت، گاز و پتروشیمی

مشخصات پژوهش

عنوان Coreshell structured CaObased pellets protected by mesoporous ceramics shells for hightemperature CO2 capture
نوع پژوهش مقالات در نشریات
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مجله CANADIAN JOURNAL OF CHEMICAL ENGINEERING
شناسه DOI
پژوهشگران محمدهاشم صدق کردار (نفر اول) ، نادر مهین پی (نفر دوم) ، امیر حسن سلیمانی نسب (نفر سوم) ، Zhenkun Sun (نفر چهارم) ، Zhiewi Chen (نفر پنجم) ، Kaliagunie Serge (نفر ششم به بعد) ، Jim Lim (نفر ششم به بعد)

چکیده

In this study, a series of core-shell structured spheriform CO2 sorbents were synthesized by using CaO-based pellets as cores and different mesoporous metal oxides (e.g. alumina, ceria, and yttrium-stabilized zirconia) as shells through a repeated wet impregnation coating process. Cyclic CO2 capture performance of the obtained sorbents was investigated using a thermogravimetric analyzer. Among all the core/shell sorbents under study, the pellets coated with a layer of alumina exhibit the best performance in the retention of CO2 uptake over 20 cycles with the lowest activity loss of only 30.4?%, attributed to the existence of the thermal stable porous alumina shell which prevents the sintering and the aggregation of the CaO grains. Moreover, the attrition study using an air-jet apparatus and a standard test method reveals that such sorbents exhibit enhanced attrition resistance due to the protection of the porous shell providing them with a great potential for application in fluidized bed conditions.