Pd/Nb<sub>2</sub>O<sub>5</sub>/SiO<sub>2</sub>Catalyst for the Direct Hydrodeoxygenation of Biomass-Related Compounds to Liquid Alkanes under Mild Conditions
作者:Yi Shao、Qineng Xia、Xiaohui Liu、Guanzhong Lu、Yanqin Wang
DOI:10.1002/cssc.201500053
日期:2015.5.22
hydrodeoxygenation reactions of 4‐(2‐furyl)‐3‐buten‐2‐one (aldol adduct of furfural with acetone), palmitic acid, tristearin, and diphenyl ether (model compounds of microalgae oils, vegetable oils, and lignin), which gave high yields (>94 %) of alkanes with little CC bond cleavage. More importantly, owing to the significant promotion effect of NbOx species on CO bond cleavage and the mild reaction conditions
制备了一种简单的Pd负载Nb 2 O 5 / SiO 2催化剂,用于在温和条件下将生物质相关化合物加氢脱氧为烷烃。通过溶胶-凝胶法制备了分散在二氧化硅(Nb 2 O 5 / SiO 2)中的氧化铌,并通过多种技术进行了表征,包括N 2吸附,XRD,NH 3程序升温脱附(TPD),TEM,和能量色散X射线光谱(EDAX)原子映射。表征结果表明,氧化铌是无定形的,并很好地分散在二氧化硅中。与商用Nb 2 O 5相比,Nb 2O 5 / SiO 2具有显着更多的活性铌氧化物暴露在表面上。在温和的条件下(170°C,2.5 MPa),Pd / 10%Nb 2 O 5 / SiO 2对4-(2-呋喃基)-3-丁烯-2-酮(糠醛的醛醇加合物)的加氢脱氧反应有效用丙酮),棕榈酸,硬脂精和二苯醚(微藻油,植物油和木质素的模型化合物),可得到高收率(> 94%)的烷烃,几乎没有CC键断裂。更重要的是,由于NbO