可回收和空气稳定的胶体锰纳米颗粒催化烯烃与叔硅烷†的硅氢化反应

IF 4.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

RSC Advances Pub Date : 2025-01-20 DOI:10.1039/D4RA08380F

Nobuki Katayama, Kazuki Tabaru, Tatsuki Nagata, Miku Yamaguchi, Takeyuki Suzuki, Takashi Toyao, Yuan Jing, Zen Maeno, Ken-ichi Shimizu, Takeshi Watanabe and Yasushi Obora

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引用次数: 0

摘要

以氯化锰为前驱体，在空气条件下一步合成了N，N-二甲基甲酰胺（DMF）稳定的锰纳米颗粒（Mn NPs）。利用环形暗场扫描透射电子显微镜（ADF-STEM）、x射线光电子能谱（XPS）和x射线吸收光谱（XAS）对Mn NPs的粒径、氧化态和局部结构进行了表征。结果表明，Mn - NPs是具有Mn - o键的二价纳米粒子。Mn NPs表现出较高的催化活性，在烯烃硅氢化反应中达到15 800的周转率（TON），超过了以前的锰催化剂。此外，Mn NPs在反应后保持其催化活性，使其能够多次回收。

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Recyclable and air-stable colloidal manganese nanoparticles catalyzed hydrosilylation of alkenes with tertiary silane†

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Recyclable and air-stable colloidal manganese nanoparticles catalyzed hydrosilylation of alkenes with tertiary silane†

We synthesized N,N-dimethylformamide (DMF)-stabilized manganese nanoparticles (Mn NPs) in a one-step process under air using manganese(II) chloride as the precursor. The Mn NPs were characterized in terms of particle size, oxidation state, and local structure using annular dark-field scanning transmission electron microscopy (ADF-STEM), X-ray photoelectron spectroscopy (XPS), and X-ray absorption spectroscopy (XAS). The results indicate that Mn NPs are divalent nanosized particles with Mn–O bonds. The Mn NPs exhibited high catalytic activity, achieving a turnover number (TON) of 15 800, surpassing previous manganese catalysts in alkene hydrosilylation. Furthermore, the Mn NPs maintained their catalytic activity after the reaction, enabling multiple recycling.

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来源期刊

RSC Advances chemical sciences-

CiteScore

7.50

自引率

2.60%

发文量

3116

审稿时长

1.6 months

期刊介绍： An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.