The Effect of Thermal Pre-Treatment on Structure, Composition, Basicity and Catalytic Activity of Mg/Al Mixed Oxides

被引：25
|
作者：
Capek, Libor [1 ]
Kutalek, Petr [1 ]
Smolakova, Lucie [1 ]
Hajek, Martin [1 ]
Troppova, Ivana [1 ]
Kubicka, David [2 ]
机构：
[1] Univ Pardubice, Fac Chem Technol, Dept Phys Chem, Pardubice 53210, Czech Republic
[2] RENTECH UniCRE, Res Inst Inorgan Chem, Litvinov 43670, Czech Republic
来源：
TOPICS IN CATALYSIS | 2013年 / 56卷 / 9-10期
关键词：
Mg/Al mixed oxides; Structure analysis; Basic sites; Thermal pre-treatment; Transesterification; MG-AL HYDROTALCITE; SOYBEAN OIL; BIODIESEL PRODUCTION; ALDOL CONDENSATION; BASE PROPERTIES; FINE CHEMICALS; TRANSESTERIFICATION; METHANOL; ACID; DECOMPOSITION;
D O I：
10.1007/s11244-013-0008-3
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The goal of this work is to study the effect of thermal pre-treatment of Mg/Al mixed oxides (450-1,050 A degrees C) on their structure, basicity and catalytic activity in transesterification of rapeseed oil. The catalytic activity of Mg/Al catalysts was shown to depend not only on the amount of basic sites, but also on crystallite size of MgO, specific surface area and population of medium/strong basic sites. Moreover, high stability of Mg/Al-550 was established by re-using the catalyst four times. It was associated with negligible magnesium leaching from the solid catalyst to liquid phases.
引用
收藏
页码：586 / 593
页数：8
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