English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 6507/11669
造訪人次 : 29620330      線上人數 : 275
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 進階搜尋

請使用永久網址來引用或連結此文件: http://ir.ncue.edu.tw/ir/handle/987654321/16854

題名: The Role of [M+O-] Centers (M+=Group IA Ion) in the Activation of Methane on Metal Oxides
作者: Jack H. Lunsford;Lin, Chiu-Hsun;Wang, Ji-Xiang;K. D. Campbell
貢獻者: 化學系
日期: 1987
上傳時間: 2013-06-05T09:36:52Z
出版者: Materials Research Society
摘要: If the ionic radii are compatible, alkali metal ions will substitute for the divalent metal ions in magnesium oxide, calcium oxide and zinc oxide. At high temperatures in the presence of molecular oxygen, centers of the type [M+O−] are formed, where MM+– Group IA ion. The O− ions in equilibrium with these centers are effective in H” abstraction from CH4, which is the first step in the oxidative dimerization reaction. At reaction temperatures >720°C alkali metal oxides formed on the catalytic surface may themselves become active centers. Alkali metal carbonates also may inhibit the activity of the host oxide and sinter the oxide, thereby eliminating corner sites which result in complete oxidation.
關聯: MRS Proceedings, 111: 305
顯示於類別:[化學系] 專書

文件中的檔案:

沒有與此文件相關的檔案.



在NCUEIR中所有的資料項目都受到原著作權保護.

 


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋