Eco-friendly and efficient synthesis of benzimidazole derivatives using iron oxide modified sepiolite catalyst

被引：12
|
作者：
Eren, B. [1 ]
Erdogan, G. [1 ]
机构：
[1] Bilecik Univ, Fac Sci & Arts, Dept Chem, TR-11210 Bilecik, Turkey
来源：
REACTION KINETICS MECHANISMS AND CATALYSIS | 2012年 / 107卷 / 02期
关键词：
Sepiolite; Benzimidazole; Condensation; Formic acid; Catalysis; FORMIC-ACID DECOMPOSITION; WATER-GAS SHIFT; K-10; CLAY; ANTAGONISTS; OXIDATION; SAPONITE; BEARING;
D O I：
10.1007/s11144-012-0469-6
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 fast, economic, and green synthesis of benzimidazole derivatives using iron oxide modified sepiolite (IMS) as a catalyst has been reported. IMS showed excellent catalytic properties and the reactions completed within 20-30 min to give products in high yield. The adsorption mechanism of formic acid on IMS was studied by infrared (IR) spectroscopy at temperature range 120-400 A degrees C. Thermal desorption of pyridine was followed by IR and thermal analysis techniques to estimate the acidity of IMS. Lewis acid-bound pyridine bands at 1,618-1,631 and 1,443-1,445 cm(-1) were observed even after IMS sample were heated above 400 A degrees C.
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页码：333 / 344
页数：12
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