Microporous carbon nitride as an effective solid base catalyst for Knoevenagel condensation reactions
Microporous carbon nitride as an effective solid base catalyst for Knoevenagel condensation reactions
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微孔氮化碳作为 Knoevenagel 缩合反应的有效固体碱催化剂
DOI：
10.1016/j.molcata.2013.02.019
复制
发表时间：
2013-06
期刊：
影响因子：
--
通讯作者：
Li, Yong-Xin
中科院分区：
文献类型：
--
作者：
Xu, Jie;Shen, Kang;Xue, Bing;Li, Yong-Xin
以四氯化碳和乙二胺为前驱体，以硅质微孔MCM-22为硬模板剂，制备了微孔石墨氮化碳（CN-Mic）材料。在CN-Mic样品上进行了一系列Knoevenagel缩合反应，并考察了反应条件对相应催化行为的影响。结果表明，该材料对缩合反应具有较高的催化活性和通用性。XPS和FT-IR分析表明，CN-Mic表面含有大量的含氮基团，这是该氮化碳材料作为新型多相刘易斯碱催化剂具有良好的上级催化活性的原因。结果表明，CN-Mic的催化活性远高于介孔g-CN材料。同时，CN-Mic的催化效果优于以前报道的其他g-CN材料对Knoevenagel反应的催化效果。此外，还初步探讨了CN-Mic催化Knoevenagel缩合反应的机理。
Microporous graphitic carbon nitride (CN-Mic) material has been prepared using carbon tetrachloride and ethylene diamine as precursors, and a siliceous microporous MCM-22 as a hard template. A series of Knoevenagel condensation reactions have been performed over the CN-Mic sample, and the influences of reaction conditions on the corresponding catalytic behavior have been investigated. The results showed that the CN-Mic material exhibited high catalytic activity and versatility for the condensation reactions. XPS and FT-IR analysis reveal a high abundance of the N-containing groups located on the surface of CN-Mic, which accounts for the superior catalytic activity of the carbon nitride material as a promising new type of heterogeneous Lewis base catalyst for the condensation reactions. It is also revealed that the activity of CN-Mic is much higher than those obtained over mesoporous g-CN materials. Meanwhile, the catalytic results of CN-Mic compared favorably with those of other g-CN materials for Knoevenagel reactions reported previously. In addition, a mechanism for the CN-Mic catalyzed Knoevenagel condensation was tentatively proposed.
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DOI：
10.1016/s0167-2991(08)80128-0
发表时间：
2008
期刊：
Studies in Surface Science and Catalysis
影响因子：
--
作者：
F. Amarante;A. G. S. Filho;J. Filho;P. Lima-Neto;Elisane Longhinotti;A. C. H. Oliveira
通讯作者：
F. Amarante;A. G. S. Filho;J. Filho;P. Lima-Neto;Elisane Longhinotti;A. C. H. Oliveira
影响因子：
2.8
作者：
R. M. Freire;A. H. Morais Batista;A. G. Souza Filho;J. Filho;G. D. Saraiva;Alcineia C. Oliveira
通讯作者：
R. M. Freire;A. H. Morais Batista;A. G. Souza Filho;J. Filho;G. D. Saraiva;Alcineia C. Oliveira
影响因子：
16.6
作者：
Jin, Xin;Balasubramanian, Veerappan V.;Vinu, Ajayan
通讯作者：
Vinu, Ajayan
影响因子：
3.2
作者：
J. C. Sánchez-López;C. Donnet;F. Lefebvre;C. Fernández-Ramos;Arnaud Fernandez
通讯作者：
J. C. Sánchez-López;C. Donnet;F. Lefebvre;C. Fernández-Ramos;Arnaud Fernandez
影响因子：
7.3
作者：
Ono, Y
通讯作者：
Ono, Y