纤维素/钯负载催化剂的构建及应用

Construction and Application of Cellulose/Pd Supported Catalyst

本研究中,我们使用可再生的生物质资源纤维素作为载体来制备高度分散的纳米钯催化剂(平均粒径~2.8 nm)。纤维素丰富的特征官能团、纳米多孔结构及相对优异的热/化学稳定性,对稳定高分散纳米钯起重要作用,且纤维素分子链上的羟基能够原位诱导金属Pd(0)的形成。所得负载催化剂用于硝基芳烃的催化氢化,与商业Pd/C和纳米钯黑催化剂相比,该催化剂显示出优异的催化活性,且在5次循环反应中几乎无活性损失,显示出潜在的工业应用前景。

In this study, we used renewable biomass resource cellulose as a carrier to prepare highly dispersed nano-palladium catalysts(average particle size~2.8 nm). The rich characteristic functional groups, nanoporous structure and relatively excellent thermal/chemical stability of cellulose play an important role in stabilizing highly dispersed nano-palladium, and the hydroxyl groups on the cellulose molecular chain can in situ induce the formation of metal Pd(0). The obtained catalyst was used for the catalytic hydrogenation of nitroaromatics. Compared with commercial Pd/C and nano-palladium catalysts, the catalyst showed excellent catalytic activity, and there was almost no activity loss in five cycles reaction, showing potential industrial application.