Periodic Open Cellular Raney‐Copper Catalysts Fabricated via Selective Electron Beam Melting. Issue 5 (21st February 2020)

• Record Type: Journal Article
• Authors: Wolf, Torsten; Fu, Zongwen; Ye, Jihui; Heßelmann, Christina; Pistor, Julian; Albert, Jakob; Wasserscheid, Peter; Körner, Carolin
• Is Part Of: Advanced engineering materials. Volume 22:Issue 5(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-02-21
• Subjects: additive manufacturing -- cellular structures -- electron beam -- nanoporosity -- Raney copper; Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201901524
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : Herein, the possibility of generating Raney‐Copper catalysts with high geometric complexity is demonstrated. For this, periodic open cellular structures (POCS) composed of a highly brittle Al–Cu alloy containing 29.4 at% copper are fabricated by selective electron beam melting (SEBM) for application in chemical reaction engineering. After selective leaching of aluminum in an NaOH solution, the POCS show a core–shell structure with a nanoporous copper surface layer and a solid core. The fabrication and dealloying processes as well as the microstructure are studied. Moreover, the SEBM‐processed Raney‐type copper catalysts show a high catalytic activity in methanol synthesis. Abstract : Raney‐copper periodic open cellular structures (POCS) with dense struts composed of a highly brittle Al–Cu alloy containing 29.4 at% copper are successfully fabricated via selective electron beam melting. After selective leaching of aluminum in a sodium hydroxide solution, catalytic active POCS containing core–shell structured struts with a nanoporous copper surface layer and a solid core are derived for applications in chemical reaction engineering.