Preparation of Activated Ordered Mesoporous Carbons with a Channel Structure

详细信息    查看全文

• 作者：Dingcai Wu ; Yeru Liang ; Xiaoqing Yang ; Chong Zou ; Zhenghui Li ; Guifen Lv ; Xianhua Zeng ; Ruowen Fu
• 刊名：Langmuir
• 出版年：2008
• 出版时间：April 1, 2008
• 年：2008
• 卷：24
• 期：7
• 页码：2967 - 2969
• 全文大小：166K
• 年卷期：v.24,no.7(April 1, 2008)
• ISSN：1520-5827

文摘

Activated ordered mesoporous carbons with a channel structure (AOMCs-CS) were successfully prepared byimposing CO₂ activation on ordered mesopore carbon C-FDU-15. It is found that the continuous carbon frameworkof the precursor C-FDU-15 plays an important role in keeping the order structure of the resulting AOMCs-CS. Themild activation (e.g., 31 wt % burnoff) does not impair the order degree. After that, the order degree gradually decreaseswith further increasing burnoff. However, the basic hexagonal mesostructure of C-FDU-15 can still be found in theAOMCs-CS when the burnoff is up to 73 wt %, although many carbon walls are punched and thus many largermesopores and marcropores are generated. With increasing burnoff, the surface area and volume of microporesincrease first and then decrease, and the surface area and volume of mesopores continuously increase. The highestmeasured Brunaruer-Emmett-Teller (BET) surface area, micropore volume, and total pore volume of the AOMCs-CS reach 2004 m²/g, 0.50 cm³/g, and 1.22 cm³/g, respectively.