99超碰中文字幕在线观看-天天干天天日天天舔婷婷-我看操逼的好看的女人的-日本一二三四五区日韩精品

今天給大家分享的是2014年4月份 《Comptes Rendus Chimie》上發(fā)表的一篇名為：Oxidation of carbon black, propene and toluene on highly reducible Co/SBA-15 catalysts

文章摘要如下：

Different cobalt loadings (3, 6, 12, 24 wt%) were impregnated using the double-solvent technique on SBA-15 calcined at 500 °C presenting a high specific surface area. The impregnated solids were stabilized at 450 °C in the air. The impregnation of cobalt led to the incorporation of cobalt oxide nanoparticles in the mesoporosity of the SBA-15. The cobalt nanoparticles were easily reducible compared to similar solids prepared by different methods. The presence of these nanoparticles enhanced significantly the reactivity of the catalysts in the considered reaction. The addition of more than 12 wt% of cobalt did not enhance the catalytic reactivity due to the deposition of cobalt oxide species on the surface of the support. The cobalt-impregnated solids are efficient in decreasing the oxidation temperature of different probe molecules and are totally selective towards the formation of CO2 and H2O.

該文章中材料表征采用的是美國麥克儀器AutoChem 2920

詳情可參考下面鏈接：

http://www.sciencedirect.com/science/article/pii/S163107481300341X