化学
氧化剂
催化作用
无机化学
乙炔
丙酮
溶剂
金属
三氟甲磺酸
水溶液
有机化学
作者
Xuming Sun,Simon R. Dawson,Tanja E. Parmentier,Grazia Malta,Thomas E. Davies,Qian He,Lu Li,David Morgan,Nicholas Carthey,Peter Johnston,Simon A. Kondrat,Simon J. Freakley,Christopher J. Kiely,Graham J. Hutchings
出处
期刊:Nature Chemistry
[Springer Nature]
日期:2020-04-13
卷期号:12 (6): 560-567
被引量:95
标识
DOI:10.1038/s41557-020-0446-z
摘要
Single-site catalysts can demonstrate high activity and selectivity in many catalytic reactions. The synthesis of these materials by impregnation from strongly oxidizing aqueous solutions or pH-controlled deposition often leads to low metal loadings or a range of metal species. Here, we demonstrate that simple impregnation of the metal precursors onto activated carbon from a low-boiling-point, low-polarity solvent, such as acetone, results in catalysts with an atomic dispersion of cationic metal species. We show the generality of this method by producing single-site Au, Pd, Ru and Pt catalysts supported on carbon in a facile manner. Single-site Au/C catalysts have previously been validated commercially to produce vinyl chloride, and here we show that this facile synthesis method can produce effective catalysts for acetylene hydrochlorination in the absence of the highly oxidizing acidic solvents previously used. Au/C single-site catalysts have been validated commercially for acetylene hydrochlorination, but they have previously been prepared using highly oxidizing acidic solvents or additional ligands. It has now been shown that they can be made by impregnation of a metal salt from an acetone solution—generating catalysts with comparable activity to those synthesized by the other methods.
科研通智能强力驱动
Strongly Powered by AbleSci AI