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Investigation of hollow bimetal oxide nanomaterial and their catalytic activity for selective oxidation of alcohol
Molecular Catalysis ( IF 4.6 ) Pub Date : 2018-02-21 , DOI: 10.1016/j.mcat.2018.01.028
Wenbin Gao , Feng Li , Hongfei Huo , Yuanyuan Yang , Xiang Wang , Yu Tang , Pengbo Jiang , Shuwen Li , Rong Li

The aerobic oxidation procedure utilized sustainable non-noble-metal catalysts has been a long-standing objective in laboratory and industrial research. The synthesized hollow bimetal oxide nanoparticles catalysts (HNPs) as a stable and efficient catalyst, which was applied to the selective oxidation of alcohols with molecular oxygen as oxidant, is reported. The catalytic performance of Co3O4/Fe3O4@C HNPs was tested via selective aerobic oxidation catalytic reaction of cinnamyl alcohol in the liquid phase. The results prove that the Co3O4/Fe3O4@C HNPs exhibit ∼ 90% yield for alcohol oxidation, which can be conveniently separated and recycled from reaction system by an external magnetism. Forthrmore, the catalyst can be reutilized for at least 5 runs without a distinct activity reduction. A feasible reaction mechnism over the bimetal catalyst for the alcohol oxidation was proposed. The surface effect between metal oxide nanoparticle and carbon support, and relatively high and easy reducibility grant favorable catalytic activity of Co3O4/Fe3O4@C HNPs. This make the Co3O4/Fe3O4@C HNPs a very significant catalyst for aerobic catalytic oxidation reaction of alcohols in the liquid phase for industrial manufacture.



中文翻译:

中空双金属氧化物纳米材料及其对醇选择性氧化的催化活性研究

利用可持续的非贵金属催化剂进行的好氧氧化过程一直是实验室和工业研究的长期目标。报道了一种稳定,高效的合成中空双金属氧化物纳米粒子催化剂(HNPs),该催化剂被用于以分子氧为氧化剂对醇类进行选择性氧化。通过肉桂醇在液相中的选择性好氧氧化催化反应,对Co 3 O 4 / Fe 3 O 4 @C HNPs的催化性能进行了测试。结果证明Co 3 O 4 / Fe 3 O 4@C HNP对醇的氧化显示约90%的产率,可以通过外部磁性方便地从反应系统中分离和回收该化合物。此外,该催化剂可重复使用至少5次,而不会明显降低活性。提出了在双金属催化剂上进行醇氧化的可行反应机理。金属氧化物纳米颗粒与碳载体之间的表面效应以及相对较高且易于还原的特性赋予了Co 3 O 4 / Fe 3 O 4 @C HNPs良好的催化活性。这使得Co 3 O 4 / Fe 3 O 4@C HNPs是一种非常重要的催化剂,用于工业生产中液相中酒精的需氧催化氧化反应。

更新日期:2018-02-21
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