由蒽镁真空热解合成的活性镁的加氢性能

蒽镁真空热解合成活性镁是一种原则上不消耗试剂的活化镁的方法 。这种活性镁在常压即可加氢生成氢化镁, 最适加氢温度为230℃。加氢反应的速度对镁的表面积为一级。反应的表观活化能为43kJ/mol。活性高的原因是和它的高分散性以及干净的大比表面积有关。电镜结果表明这种活性镁的基本颗粒属于nm规格范围。

Hydrogenation behaviour of active magnesium synthesized by the thermal decomposition of magnesium anthracene in vacuum

The synthesis of active Mg by the thermal decomposition of Mg anthracene in vacuum is a method which does not consume any reagents in principle. This active Mg can be hydrogenated with the formation of MgH2 under normal pressure. The optimum temperature for the hydrogenation reaction is 230? The order of the hydrogenation reaction with respect to the Mg surface area is one. The apparent activation energy is 43 kJ/mol. The reason for the high activity of this Mg is closely related to its high dispersion and its large clean surface. Electron microscopy data reveal that the size of the primary particles of the active Mg belongs to the field of nano-materials.