Basic zeolites as catalysts in the N-alkylation of imidazole: Activation by microwave irradiation
L Costarrosa
1
,
Javier Ruiz-Martínez
2
,
R V R A Rios
2
,
María Luisa Rojas-Cervantes
1
,
A Sepúlveda-Escribano
2
1
Departamento de Química Inorgánica y Química Técnica, UNED, Paseo Senda del Rey No. 9, 28040 Madrid, Spain
|
Тип публикации: Journal Article
Дата публикации: 2009-04-01
scimago Q1
wos Q2
БС1
SJR: 1.003
CiteScore: 11.0
Impact factor: 4.7
ISSN: 13871811, 18733093
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanics of Materials
Краткое описание
The alkylation of imidazole (C 3 H 4 N 2 ) with different alkyl halides, such as 1-Br-butane, 2-Br-butane and 1-Br-hexane, has been carried out in the absence of solvent using basic zeolites as catalysts. Catalysts were prepared by cation exchange of a commercial NaX zeolite with different alkaline-earth cations (Ca, Sr and Ba). The resulting zeolites were characterised by N 2 (77 K) and CO 2 (273 K) adsorption, immersion calorimetry, CO 2 adsorption calorimetry and CO 2 temperature-programmed desorption experiments. The influence of the irradiation time and power and the alkaline-earth exchanged cation on the catalytic activity has been studied. Conversion values as high as 95% and selectivity values of 100% were obtained at 700 W in only 5 min in most of the cases when 1-Br-butane and 2-Br-butane were used as alkylating agents. In general, NaX is the best catalyst in most of the reaction conditions studied.
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Costarrosa L. et al. Basic zeolites as catalysts in the N-alkylation of imidazole: Activation by microwave irradiation // Microporous and Mesoporous Materials. 2009. Vol. 120. No. 1-2. pp. 115-121.
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Costarrosa L., Ruiz-Martínez J., Rios R. V. R. A., Silvestre-Albero J., Rojas-Cervantes M. L., Sepúlveda-Escribano A. Basic zeolites as catalysts in the N-alkylation of imidazole: Activation by microwave irradiation // Microporous and Mesoporous Materials. 2009. Vol. 120. No. 1-2. pp. 115-121.
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TY - JOUR
DO - 10.1016/j.micromeso.2008.07.046
UR - https://doi.org/10.1016/j.micromeso.2008.07.046
TI - Basic zeolites as catalysts in the N-alkylation of imidazole: Activation by microwave irradiation
T2 - Microporous and Mesoporous Materials
AU - Costarrosa, L
AU - Ruiz-Martínez, Javier
AU - Rios, R V R A
AU - Silvestre-Albero, J
AU - Rojas-Cervantes, María Luisa
AU - Sepúlveda-Escribano, A
PY - 2009
DA - 2009/04/01
PB - Elsevier
SP - 115-121
IS - 1-2
VL - 120
SN - 1387-1811
SN - 1873-3093
ER -
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@article{2009_Costarrosa,
author = {L Costarrosa and Javier Ruiz-Martínez and R V R A Rios and J Silvestre-Albero and María Luisa Rojas-Cervantes and A Sepúlveda-Escribano},
title = {Basic zeolites as catalysts in the N-alkylation of imidazole: Activation by microwave irradiation},
journal = {Microporous and Mesoporous Materials},
year = {2009},
volume = {120},
publisher = {Elsevier},
month = {apr},
url = {https://doi.org/10.1016/j.micromeso.2008.07.046},
number = {1-2},
pages = {115--121},
doi = {10.1016/j.micromeso.2008.07.046}
}
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Costarrosa, L., et al. “Basic zeolites as catalysts in the N-alkylation of imidazole: Activation by microwave irradiation.” Microporous and Mesoporous Materials, vol. 120, no. 1-2, Apr. 2009, pp. 115-121. https://doi.org/10.1016/j.micromeso.2008.07.046.