The effect of ultrasound on the N-alkylation of imidazole over alkaline carbons: Kinetic aspects

被引:13
|
作者
Ferrera-Escudero, S. [2 ]
Perozo-Rondon, E. [2 ]
Calvino-Casilda, V. [3 ]
Casal, B. [4 ]
Martin-Aranda, R. M. [2 ]
Lopez-Peinado, A. J. [2 ]
Duran-Valle, C. J. [1 ]
机构
[1] Univ Extremadura, Dept Quim Organ & Inorgan, Fac Ciencias, E-06071 Badajoz, Spain
[2] Univ Nacl Educ Distancia, Dept Quim Inorgan & Quim Tecn, E-28040 Madrid, Spain
[3] Inst Catalisis & Petr Quim CSIC, E-28049 Madrid, Spain
[4] CSIC, CENIM, E-28040 Madrid, Spain
关键词
Reaction kinetic; Sonocatalysis; Basicity; Activated carbons; Imidazole; Alkylation; ACTIVATED CARBONS; SONOCATALYSIS; SONOCHEMISTRY; ADSORPTION; CATALYSTS; SOLIDS;
D O I
10.1016/j.apcata.2010.01.041
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
N-Alkylimidazoles have been synthesized by sonochemical irradiation of imidazole and 1-bromobutane using alkaline-promoted carbons. The catalysts were characterized by X-ray photoelectron spectroscopy, thermal analysis and nitrogen adsorption isotherms. Under the experimental conditions. N-alkylimidazoles can be prepared with a high activity and selectivity. It is observed that imidazole conversion increases in parallel with increasing the basicity of the catalyst. For comparison, the alkylation of imidazole has also been performed in a batch reactor system under thermal activation. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:26 / 32
页数:7
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