Pd NPs@Fe3O4/chitosan/pumice hybrid beads: A highly active, magnetically retrievable, and reusable nanocatalyst for cyanation of aryl halides
Pd NPs@Fe3O4/chitosan/pumice hybrid beads: A highly active, magnetically retrievable, and reusable nanocatalyst for cyanation of aryl halides
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DOI：
10.1016/j.carbpol.2020.116105
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发表时间：
2020-06-01
影响因子：
11.2
通讯作者：
Baran, Talat
中科院分区：
文献类型：
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作者：
Baran, Talat
本研究采用Fe 3 O 4/壳聚糖/浮石杂化微球作为稳定剂，在不添加任何有毒还原剂的情况下，成功地将钯纳米粒子（PdNPs）修饰在所设计的稳定剂上。然后，以K4 [Fe（CN）（6）]为催化剂，考察了PdNPs@Fe3O4/壳聚糖/浮石杂化微球作为非均相催化剂在不同卤代芳烃氰化反应中的潜在应用.在这些反应中，Pd NPs@Fe3O4/壳聚糖/浮石杂化珠通过将芳基卤化物转化为所需的苯甲腈而显示出高催化活性，具有高产物产率（80%-98%）。由于Pd NPs@Fe3O4/壳聚糖/浮石混合珠的磁性可分离性质，它们被重复使用多次，并且即使在六次连续运行之后也获得86%的产率。本文揭示了PdNPs@Fe3O4/壳聚糖/浮石杂化微球由于其优异的催化和可回收能力而具有很高的潜力来合成宽范围的腈。
In this study, Fe3O4/chitosan/pumice hybrid beads were developed as a new stabilizer agent, and palladium nanoparticles (Pd NPs) were successfully decorated on the designed stabilizer without adding any toxic reducing resource. Then, the potential use of Pd NPs@Fe3O4/chitosan/pumice hybrid beads as a heterogeneous catalyst against different aryl halide cyanations was investigated with K-4[Fe(CN)(6)]. In these reactions, Pd NPs@Fe3O4/chitosan /pumice hybrid beads showed high catalytic activity by converting aryl halides to the desired benzonitriles with high product yields (80 %-98 %). Due to the magnetically separable nature of Pd NPs@Fe3O4/chitosan/pumice hybrid beads, they were reused several times, and 86 % yield was obtained even after six successive runs. This paper reveals that Pd NPs@Fe3O4/chitosan/pumice hybrid beads have a high potential to synthesis a broad range of nitriles due to their excellent catalytic and retrievable capability.