کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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42650 | 45935 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation of porous ruthenium catalysts utilizing a silsesquioxane ligand; catalytic activity towards hydroformylation of 1-octene Preparation of porous ruthenium catalysts utilizing a silsesquioxane ligand; catalytic activity towards hydroformylation of 1-octene](/preview/png/42650.png)
The controlled calcination of ruthenium complexes together with an aminosilsesquioxane ligand (1) at 823 K in air stream for 4 h afforded porous silicas including monodispersed ruthenium oxide nanoparticles with high surface areas and uniformly controlled micropores. Bimodal porous oxides with both meso- and micropores were prepared by the impregnation of Ru complexes and 1 onto titania (JRC-TIO-4) or silica (JRC-SIO-1), followed by the careful calcination at 823 K. These bimodal catalysts showed higher activity towards hydroformylation of 1-octene (C9-aldehydes yield up to 31%, linear selectivity up to 95% in CO 20 atm, H2 25 atm at 403 K for 20 h with 1.5 mol% Ru catalyst) than the catalysts prepared without an aminosilsesquioxane ligand.
Combination of an animosilsesquioxane ligand, ruthenium complexes, and titania or silica followed by the controlled calcination afforded porous oxides having both micro- and mesopores. These oxides showed catalytic activities towards the hydroformylation of 1-octene with high linear selectivity of aldehyde.Figure optionsDownload as PowerPoint slide
Journal: Applied Catalysis A: General - Volume 356, Issue 1, 1 March 2009, Pages 72–79