Chemical fixation of carbon dioxide to propylene carbonate over amine-functionalized silica catalysts

被引：99
|
作者：
Zhang, Xuehong
Zhao, Ning
Wei, Wei
Sun, Yuhan [1 ]
机构：
[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
CATALYSIS TODAY | 2006年 / 115卷 / 1-4期
关键词：
functionalized silica; ultrasonic technique; catalyst; chemical fixation; CO2; propylene carbonate;
D O I：
10.1016/j.cattod.2006.02.028
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Amine-functionalized silica catalysts (NH2/SiO2, NH(CH2)(2)NH2/SiO2 and 1,5,7-triazabicyclo[4,4,0]dec-5-ene/SiO2 (TBD/SiO2)), which were characterized by Si-29 NMR, elemental analysis, N-2 adsorption-desorption method and indicator dye adsorption, were prepared by ultrasonic technique under mild conditions. Such hybrid solid bases showed high catalytic activity towards CO2 coupling with epoxide. However, it was found that the reaction conditions had a great influence on the performance. Furthermore, silanols on the surface played an important role in the chemical fixation of CO2. Based on these, the possible reaction mechanism was proposed for CO2 coupling with epoxide over such type of catalysts. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：102 / 106
页数：5
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