کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9610445 | 47189 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization and microporosity analysis of mesoporous carbon molecular sieves by nitrogen and organics adsorption
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Novel mesoporous carbon molecular sieves have been prepared from SBA-15 materials as templates at different temperatures. This allows the synthesis of hexagonally arranged mesoporous carbons with pore diameters between 3.0Â nm (CMK-3-100) and 6.5Â nm (CMK-3-150). CMK-1 and CMK-2 have been synthesized using MCM-48 and SBA-1, respectively, as templates for comparison with the above materials. The structural order and textural properties of all the materials were studied by X-ray diffraction (XRD) and nitrogen adsorption. The microporosity analysis of different mesoporous carbons such as CMK-1, CMK-2, CMK-3, CMK-3-130 and CMK-3-150 has been studied by n-heptane and cyclohexane adsorption. It has been found that CMK-2 has a large amount of micropores (upt to 50% of the total pore volume), while the other materials studied possess smaller amounts of micropores. Moreover, it was found that the mechanical stability of CMK-3-100 is high compared to mesoporous SBA-15 silica materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volumes 102â103, 15 May 2005, Pages 189-196
Journal: Catalysis Today - Volumes 102â103, 15 May 2005, Pages 189-196
نویسندگان
A. Vinu, Martin Hartmann,