Synthesis of 4H-benzo[b]pyrans in the presence of sulfated MCM-41 nanoparticles as efficient and reusable solid acid catalyst

被引：48
作者：
Abdollahi-Alibeik, Mohammad [1 ]
Nezampour, Fahime [1 ]
机构：
[1] Yazd Univ, Dept Chem, Yazd 89195741, Iran
来源：
REACTION KINETICS MECHANISMS AND CATALYSIS | 2013年 / 108卷 / 01期
关键词：
Nanoparticle; Sulfated MCM-41; Benzo[b]pyran; Multi-component reaction; Solid acid; ONE-POT SYNTHESIS; EXPANDED MESOPOROUS SILICA; VERSATILE CATALYST; MULTICOMPONENT REACTIONS; MOLECULAR-SIEVES; GREEN SYNTHESIS; IONIC LIQUID; DERIVATIVES; OXIDATION; BROMIDE;
D O I：
10.1007/s11144-012-0504-7
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：
A one-pot three-component reaction of various types of aldehydes, dimedone, and malononitrile was studied in the presence of sulfated MCM-41 (SO4 (2-)/MCM-41) nanoparticles for the synthesis of 4H-benzo[b]pyrans. MCM-41 was synthesized in nanosize by the sol-gel method and then SO4 (2-)/MCM-41 samples with different calcination temperatures were prepared and characterized by XRD, FT-IR, SEM, and BET techniques. The characterization results show the insertion of sulfate in the mesoporous structure of MCM-41 and the catalytic performance experiments show that SO4 (2-)/MCM-41 with a calcination temperature of 550 A degrees C has the best catalytic activity. The reusability experiments show that the catalyst is reusable with moderate decrease in activity.
引用
收藏
页码：213 / 229
页数：17
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