今天给大家分享的�?014�?月份 《Applied Catalysis A: General》上发表的一篇名为：Mechanistic insights into the effects of support on the reaction pathway for aqueous-phase hydrogenation of carboxylic acid over the supported Ru catalysts

文章摘要如下９�br /> Several supported Ru catalysts, Ru/TiO2, Ru/ZrO2, Ru/SiO2, Ru/��-Al2O3 and Ru/SiO2-Al2O3, were prepared and investigated for propanoic acid aqueous-phase hydrogenation. H2-TPR, NH3-TPD, pyridine-FTIR and propanoic acid-DRIFTS techniques were performed to explore the metal�Csupport interaction, acid sites and key adsorption species. The effect of support on the reaction pathway of CO hydrogenation and decarbonylation of acyl species was discussed. Compared with Ru/ZrO2 and Ru/SiO2 catalysts, high selectivity of CO hydrogenation was obtained over the catalysts with more Lewis acid sites, such as Ru/��-Al2O3 and Ru/SiO2-Al2O3 catalysts. The DRIFTS results suggest that the formation of adsorption species (acyl, carboxylate and carboxylic acid) is strongly depended on the nature of support. The metal�Cacid bifunctional sites are indispensable for the CO hydrogenation of acyl. However, the decarbonylation of acyl on the metal sites requires the relatively weak metal�Csupport interaction and few of Lewis acid sites.

该文章中材料表征采用的是美国麦克仪器AutoChem 2920

详情可参考下面链接：
http://scholar.google.com.hk/scholar?start=20&q=Autochem+2920&hl=zh-CN&as_sdt=0,5&as_ylo=2014