Hydrodeoxygenation of Dibenzofuran Over SBA-15 Supported Pt, Pd, and Ru Catalysts
Hydrodeoxygenation of Dibenzofuran Over SBA-15 Supported Pt, Pd, and Ru Catalysts
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DOI：
10.1007/s10562-014-1236-2
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发表时间：
2014-03
影响因子：
2.8
通讯作者：
Lei Wang;Chuang Li;Shaohua Jin;Wenzheng Li;Changhai Liang
中科院分区：
文献类型：
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作者：
Lei Wang;Chuang Li;Shaohua Jin;Wenzheng Li;Changhai Liang
摘要研究了介孔氧化硅SBA-15负载Pt、Pd和Ru催化剂对二苯并呋喃加氢脱氧反应的催化性能。DBF的HDO首先通过芳环加氢，然后通过饱和C-O键氢解生成烃。对中间体2-环己基环己醇在制备的Pt催化剂上的检测表明，含芳环的氢化物种在消除杂原子氧后转化为主要脱氧产物双环己烷。在所有三种催化剂中，Pt/SBA-15催化剂表现出最高的加氢活性，得到含芳环的加氢产物。然而，Ru催化剂在形成完全脱氧的产物方面更有效。在DBF的HDO反应中，随着反应温度的升高，饱和C-O键的断裂量增加。氢压的增加促进了芳环的饱和，对DBF的转化率有明显的影响。图形摘要
AbstractHydrodeoxygenation (HDO) of dibenzofuran (DBF) has been carried out over mesoporous silica SBA-15 supported Pt, Pd, and Ru catalysts. The HDO of DBF went through hydrogenation of aromatic rings first, followed by hydrogenolysis of the saturated C–O bond to produce hydrocarbons. The detection of intermediate 2-cyclohexylcyclohexanol over as-prepared Pt catalysts illustrated that the aromatic ring-containing hydrogenated species transformed to the major deoxygenated product bicyclohexane after elimination of the heteroatom oxygen. Among all three catalysts, the Pt/SBA-15 catalysts exhibited the highest hydrogenation activity to yield aromatic ring-containing hydrogenated products. However, the Ru catalysts were more efficient in formation of completely deoxygenated products. Meanwhile, more cleavage of the saturated C–O bond took place at higher reaction temperature in the HDO of DBF. The increase of hydrogen pressure promoted the saturation of aromatic rings with an obvious influence on the conversion of DBF.Graphical Abstract