期刊
COMPTES RENDUS CHIMIE
卷 15, 期 6, 页码 517-523出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crci.2012.04.005
关键词
Mesoporous silica; Nanoparticles; Catalyst; Solid acid; Quinoxalines
资金
- Yazd University Research Council
The condensation reaction of 1,2-diketones and o-phenylenediamines was investigated in the presence of nano-sized mesoporous silica (MCM-41) supported 12-tungstophosphoric acid (TPA) as solid acid catalyst. Nano-sized MCM-41 was synthesized and the catalysts with different loading amounts of TPA (5-15 wt.%) were prepared and characterized by XRD, FT-IR and SEM techniques. The results confirm good dispersion of TPA on the solid support. The catalyst is reusable many times without loss in its activity. (C) 2012 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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