English  |  正體中文  |  简体中文  |  Items with full text/Total items : 68069/68069 (100%)
Visitors : 23130899      Online Users : 154
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50798


    Title: Sugar-Assisted Synthesis of Ordered and Stable Cubic Mesoporous Silica SBA-1
    Authors: Ting,CC;Wu,HY;Pan,YC;Vetrivel,S;Fey,GTK;Kao,HM
    Contributors: 化學學系
    Keywords: INDUCED PHASE-TRANSFORMATION;MOLECULAR-SIEVES;PORE-SIZE;D-FRUCTOSE;MESOSTRUCTURES;MESOPHASE;TEMPLATE
    Date: 2010
    Issue Date: 2012-03-27 18:10:21 (UTC+8)
    Publisher: 國立中央大學
    Abstract: Highly ordered and hydrothermally stable cubic mesoporous silicas SBA-I (Pm (3) over barn mesophase) have been synthesized over a broad temperature range using tetraethoxysilane (TEOS) and cetyltriethylammonium bromide (CTEABr) as silicon source and template agent, respectively, under highly acidic conditions via addition of sugar molecules such as D-fructose or sucrose as an auxiliary agent. Various synthesis parameters such as D-fructose content, acid concentration and reaction time have been optimized under different synthesis conditions in order to obtain highly ordered mesoporous silica SBA-I materials with good hydrothermal stability. In contrast to the conventional synthesis methods requiring low synthesis temperature, this strategy allows the preservation of the SBA-I mesophase under high temperature synthesis conditions and leads to a highly cross-linked silica framework. In particular, the framework locations of the derivatives of D-fructose molecules and their interactions with the surfactant molecules were investigated by two-dimensional Ill H exchange NMR. The present NMR results confirmed that the derivatives of D-fructose are in close spatial proximity to the surfactant molecules to form stable spherical micelles with adequate curvatures for the formation of cubic mesophase in a wide range of synthesis conditions.
    Relation: JOURNAL OF PHYSICAL CHEMISTRY C
    Appears in Collections:[化學學系] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML362View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明