کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
75369 49113 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mesoporous carbon confined conversion of silica nanoparticles into zeolite nanocrystals
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Mesoporous carbon confined conversion of silica nanoparticles into zeolite nanocrystals
چکیده انگلیسی

A novel synthesis method has been developed to synthesize zeolite nanocrystals with controllable size and size distribution through conversion of colloidal silica nanoparticles in a mesoporous carbon matrix. Colloidal silica nanoparticles serving as the silica source as well as the hard template were embedded in the mesoporous carbon via in situ polymerization of furfuryl alcohol in the presence of tri-block copolymer (Pluronic P123), and then reacted with an alkaline aqueous solution (Na2O–Al2O3–H2O) infiltrated through the mesoporous channels of the carbon matrix. The synthesis of zeolite NaA nanocrystals is demonstrated. SEM images reveal that the sizes of the zeolite NaA nanocrystals obtained are similar to those of the starting silica nanoparticles. As a result, this synthesis method shows the potential for controlling the nanocrystal size and size distribution of silica-containing zeolites by choosing colloidal silica nanoparticles with a desired particle size distribution.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 117, Issues 1–2, 1 January 2009, Pages 490–496
نویسندگان
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