کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5350598 1503632 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polyethylenimine-incorporated zeolite 13X with mesoporosity for post-combustion CO2 capture
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Polyethylenimine-incorporated zeolite 13X with mesoporosity for post-combustion CO2 capture
چکیده انگلیسی
X-type zeolite with mesoporosity (Meso-13X) was prepared by using dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride as a mesopore-generating agent, and then modified with polyethylenimine (PEI) through a physical impregnation method to form a hybrid material (Meso-13X-PEI). Meso-13X with and without PEI was characterized by X-ray powder diffraction (XRD), N2 adsorption-desorption isotherm at 77 K, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Meso-13X-PEI exhibited higher CO2 capture capacity than PEI-modified zeolite 13X owing to its larger pore volume that accommodates more amine species inside the pore structure, and the mesoporosity also can facilitate dispersion of PEI molecules inside the pore channels. Compared to zeolite 13X, Meso-13X-PEI showed much higher CO2 capture selectivity (against N2) as well as higher CO2 capture capacity at relatively high temperature (e.g. 100 °C) and dilute CO2 concentration relevant to post-combustion conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 332, 30 March 2015, Pages 167-171
نویسندگان
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