%0 Journal Article
%A Aviziotis, Ioannis G.
%A Duguet, Thomas
%A Soussi, Khaled
%A Heggen, Marc
%A Lafont, Marie-Christine
%A Morfin, Franck
%A Mishra, Shashank
%A Daniele, Stephane
%A Boudouvis, Andreas G.
%A Vahlas, Constantin
%T Chemical Vapor Deposition of Al 13 Fe 4 Highly Selective Catalytic Films for the Semi-Hydrogenation of Acetylene
%J Physica status solidi / A
%V 215
%N 2
%@ 1862-6300
%C Weinheim
%I Wiley-VCH
%M FZJ-2018-00789
%P 1700692 -
%D 2018
%X Catalytic properties of coatings containing the Al13Fe4 intermetallic phase are tested in the reaction of semi-hydrogenation of acetylene. The selectivity to ethylene is found as high as 74% close to the reported values for pure, unsupported Al13Fe4. The initial conversion of acetylene to ethylene is 84% and rapidly drops due to the catalytic formation of carbon-based by-products on secondary Al-Fe phases. Coatings are processed through sequential chemical vapor deposition (CVD) of aluminum (5 Torr, 180 °C) and iron (40 Torr, 140 °C) layers, followed by in situ annealing for 60 min at 575 °C. Deposition proceeds at high growth rate, resulting in 15 μm thick films. After annealing, coatings are composed of the Al13Fe4 phase, co-existing with minor secondary Al-Fe intermetallic phases. Overall, it is shown that films containing complex Al-Fe intermetallic phases can be processed by CVD, opening new routes to the engineering of pure, supported Al13Fe4 catalysts on 3D or porous supports.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000423223700012
%R 10.1002/pssa.201700692
%U https://juser.fz-juelich.de/record/842570