Metal–Organic Framework‐Encapsulated CoCu Nanoparticles for the Selective Transfer Hydrogenation of Nitrobenzaldehydes: Engineering Active Armor by the Half‐Way Injection Method
作者:Yang Li、Yu‐Nong Li、Jian‐wei Zheng、Xiao‐yun Dong、Rong‐xiu Guo、Yi‐ming Wang、Ze‐nan Hu、Yongjian Ai、Qionglin Liang、Hong‐bin Sun
DOI:10.1002/chem.202003857
日期:2021.1.13
selective transfer hydrogenation of nitrobenzaldehydes into corresponding nitrobenzyl alcohols in high selectivity (99 %) and conversion (99 %) rather than nitro group reduction products. Notably, this method achieves the precise assembly of a MOF‐encapsulated composite, and the ingenious combination of MOF and nanoparticles exhibits excellent catalytic performance in the selective hydrogen transfer reaction
由金属-有机骨架(MOF)封装的具有Fe 3 O 4核(Fe 3 O 4 @SiO 2 -NH 2 -CoCu @ UiO-66)的新型盔甲型复合材料CoCu纳米粒子已通过设计和合成。半注入法,成功地用作选择性转移氢化的有效且可回收的催化剂。在这种中途注入方法中,合成前的Fe 3 O 4 @SiO 2 -NH 2在MOF萌芽期的中途,将CoCo注入UiO-66前体溶液中。形成的MOF装甲可以起到以下作用:除CoCu纳米颗粒外,还提供大量其他催化位点,保护CoCu纳米颗粒并提高催化剂稳定性,从而促进硝基苯甲醛以高选择性(99%)和转化率选择性转移氢化为相应的硝基苄醇( 99%)而不是硝基还原产物。值得注意的是,该方法可实现MOF封装复合材料的精确组装,并且MOF和纳米颗粒的巧妙结合在选择性氢转移反应中显示出出色的催化性能,在催化中实现了“ 1 + 1> 2”策略。