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具有酸性和氧化还原性质的双金属纳米固体用于催化活化C-C键和C-H键。

Bimetallic nanosized solids with acid and redox properties for catalytic activation of C-C and C-H bonds.

作者信息

Cabrero-Antonino Jose R, Tejeda-Serrano María, Quesada Manuel, Vidal-Moya Jose A, Leyva-Pérez Antonio, Corma Avelino

机构信息

Instituto de Tecnología Química , Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas , Avda. de los Naranjos s/n , 46022 , Valencia , Spain . Email:

King Fahd University of Petroleum and Minerals , P. O. Box 989 , Dhahran 31261 , Saudi Arabia.

出版信息

Chem Sci. 2017 Jan 1;8(1):689-696. doi: 10.1039/c6sc03335k. Epub 2016 Aug 26.

DOI:10.1039/c6sc03335k
PMID:28451218
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5297923/
Abstract

A new approach is presented to form self-supported bimetallic nanosized solids with acid and redox catalytic properties. They are water-, air- and H-stable, and are able to activate demanding C-C and C-H reactions. A detailed mechanistic study on the formation of the Ag-Fe bimetallic system shows that a rapid redox-coupled sequence between Ag, O (air) and Fe occurs, giving monodisperse Ag nanoparticles supported by O-bridged diatomic Fe triflimides. The system can be expanded to Ag nanoparticles embedded within a matrix of Cu, Bi and Yb triflimide.

摘要

本文提出了一种制备具有酸催化和氧化还原催化性能的自支撑双金属纳米固体的新方法。这些固体在水、空气和氢气环境下稳定，能够催化具有挑战性的碳-碳和碳-氢键反应。对银-铁双金属体系形成过程的详细机理研究表明，银、氧（空气）和铁之间发生了快速的氧化还原偶联反应，生成了由氧桥联双原子三氟甲磺酸铁负载的单分散银纳米颗粒。该体系可以扩展到嵌入铜、铋和镱三氟甲磺酸盐基质中的银纳米颗粒。

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