Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 14, 2016
Previous Article Next Article

Plastically deformed Cu-based alloys as high-performance catalysts for the reduction of 4-nitrophenol

Author affiliations

Abstract

The severe plastic deformation of metals leads to the formation of nanotextured surfaces as well as the retention of significant strain energy, characteristics which are known to promote catalytic activity. Here, we demonstrate plastically deformed surfaces of copper and copper-based alloys as being highly catalytic using the well-studied model catalytic reaction which reduces 4-nitrophenol to 4-aminophenol by borohydride. Among the materials studied, the most catalytically active is formed in a two-step process where metal chips are mechanically sheared from a Cu–Sn alloy containing precipitates and then exposed to an etchant which removes the precipitates from the exposed surface. The so-formed structures exhibit exceedingly high catalytic activity and set new benchmarks when incorporated into a fixed-bed reactor. The formation of catalytically active sites is shown to be strongly dependent on the presence of the precipitates during the deformation process, achieving an order of magnitude increase in the reaction rate constant when compared to similarly formed Cu–Sn catalysts lacking these precipitates. The work, therefore, demonstrates a new approach for generating catalytically active sites which may be applicable to other alloy combinations.

Graphical abstract: Plastically deformed Cu-based alloys as high-performance catalysts for the reduction of 4-nitrophenol

Back to tab navigation

Supplementary files

Article information


Submitted
01 Apr 2016
Accepted
19 Apr 2016
First published
20 Apr 2016

Catal. Sci. Technol., 2016,6, 5737-5745
Article type
Paper

Plastically deformed Cu-based alloys as high-performance catalysts for the reduction of 4-nitrophenol

E. Menumerov, K. D. Gilroy, M. Hajfathalian, C. J. Murphy, E. R. McKenzie, R. A. Hughes and S. Neretina, Catal. Sci. Technol., 2016, 6, 5737
DOI: 10.1039/C6CY00734A

Social activity

Search articles by author

Spotlight

Advertisements