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

页码：586 / 593

页数：8

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