English  |  正體中文  |  简体中文  |  Items with full text/Total items : 68069/68069 (100%)
Visitors : 23247655      Online Users : 170
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/987654321/26453


    Title: 1-Butene isomerization over aluminophosphate molecular sieves and zeolites
    Authors: Yang,SM;Lin,JY;Guo,DH;Liaw,SG
    Contributors: 化學工程與材料工程學系
    Keywords: SKELETAL ISOMERIZATION;N-BUTENE;COKE DEPOSITS;FERRIERITE;CONVERSION;CATALYST;ACIDITY
    Date: 1999
    Issue Date: 2010-06-29 17:28:24 (UTC+8)
    Publisher: 中央大學
    Abstract: The skeletal isomerization of n-butene to isobutene is a convenient way of producing isobutene. In this study we report 1-butene isomerization over aluminophosphate molecular sieves and silicoaluminate zeolites. Pore size, acidic strength, site density and channel tortuosity are important for the selectivity of isobutene. Medium pore size is suitable for the production of isobutene, The acidic sites of medium strength are responsible for the high selectivity of SAPO-11, Acidic sites of higher acidic strength and density yield more cracking products and less isobutene. Metal (Co, Mn, Zn) substitution in AlPO4-11 (MeAPO-11) shows higher selectivity for isobutene. Metal in the framework structure of MeAPO-11 is selective for isobutene. Metal ion exchanged into SAPO-11 or impregnated into SAPO-11 or AlPO4-11 is less-selective for isobutene. The weaker acidity and the increase of tortuosity by metal ion substitution improve the selectivity of isobutene. (C) 1999 Elsevier Science B.V. All rights reserved.
    Relation: APPLIED CATALYSIS A-GENERAL
    Appears in Collections:[化學工程與材料工程研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML1470View/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