催化作用
纳米
材料科学
球磨机
金属
化学工程
氧化物
降水
纳米颗粒
纳米技术
冶金
化学
有机化学
复合材料
气象学
工程类
物理
作者
Hannah Schreyer,Rene Eckert,Sarah Immohr,Jacopo De Bellis,Michael Felderhoff,Ferdi Schüth
标识
DOI:10.1002/anie.201903545
摘要
Abstract Supported catalysts are among the most important classes of catalysts. They are typically prepared by wet‐chemical methods, such as impregnation or co‐precipitation. Here we disclose that dry ball milling of macroscopic metal powder in the presence of a support oxide leads in many cases to supported catalysts with particles in the nanometer size range. Various supports, including TiO 2 , Al 2 O 3 , Fe 2 O 3 , and Co 3 O 4 , and different metals, such as Au, Pt, Ag, Cu, and Ni, were studied, and for each of the supports and the metals, highly dispersed nanoparticles on supports could be prepared. The supported catalysts were tested in CO oxidation, where they showed activities in the same range as conventionally prepared catalysts. The method thus provides a simple and cost‐effective alternative to the conventionally used impregnation methods.
科研通智能强力驱动
Strongly Powered by AbleSci AI