Structure-sensitive biodiesel synthesis over MgO nanocrystals

被引：71

作者：

Montero, Janine M. ^{[1
]}

Gai, Pratibha ^{[2
,3
]}

Wilson, Karen ^{[1
]}

Lee, Adam F. ^{[1
]}

机构：

[1] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England

[2] Univ York, York JEOL Nanoctr, York YO10 5DD, N Yorkshire, England

[3] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

来源：

GREEN CHEMISTRY | 2009年 / 11卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

METAL-OXIDE PARTICLES; SOLID BASE CATALYST; OIL TRANSESTERIFICATION; CHEMICAL REAGENTS; AUGER PARAMETERS; SOYBEAN OIL; SURFACE; REACTIVITY; HYDROXIDE; CHEMISTRY;

D O I：

10.1039/b814357a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Size-controlled MgO nanocrystals were synthesised via a simple sol-gel method and their bulk and surface properties characterised by powder XRD, HRTEM and XPS. Small, cubic MgO single crystals, generated by low temperature processing, expose weakly basic (100) surfaces. High temperature annealing transforms these into large, stepped cuboidal nanoparticles of periclase MgO which terminate in more basic (110) and (111) surfaces. The size dependent evolution of surface electronic structure correlates directly with the associated catalytic activity of these MgO nanocrystals towards glyceryl tributyrate transesterification, revealing a pronounced structural preference for (110) and (111) facets.

引用

页码：265 / 268

页数：4

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