کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1505897 993776 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modifying MCM-41 as an efficient nitrosamine trap in aqueous solution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Modifying MCM-41 as an efficient nitrosamine trap in aqueous solution
چکیده انگلیسی

The attempt of preparing efficient adsorbent to capture nitrosamines in aqueous solution is reported in this paper, in order to develop new mesoporous functional materials for environment protection. Adsorption of nitrosamines in an aqueous solution containing the tobacco-extract, by zeolite and mesoporous silica was investigated in detail. The influence of structural parameters such as pore size, Si/Al ratio and cation on the adsorption of zeolite was examined. Emphatically, two modification methods, one-pot synthesis and solid state grinding were employed to incorporate aluminum in mesoporous silica MCM-41 since MCM-41 possesses the suitable pore size for the trap of tobacco specific nitrosamines (TSNAs) in solution. The resulting composites were characterized by XRD, N2 adsorption at 77 K, FTIR and NH3-TPD to inspect their property and function. The impact of modifier amount and preparative method on the actual adsorption of the Al-containing composite was investigated.

Adsorption of nitrosamines in the aqueous tobacco-extract solution by zeolite and mesoporous silica was investigated, and the impact of aluminum modifier on MCM-41 was assessed. Further, how to prepare the harmonious mesoporous adsorbent with high efficiency was suggested.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 11, Issue 2, February 2009, Pages 402–410
نویسندگان
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