Synergistic Interaction between Oxides of Copper and Iron for Production of Fatty Alcohols from Fatty Acids

The selective hydrogenation of fatty acids to fatty alcohols can be achieved under moderate conditions (180 °C, 30 bar H2) by simultaneously supporting copper and iron oxides on mesoporous silica nanoparticles. The activity of the cosupported oxides is significantly higher than that of each supporte...

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Published in:ACS catalysis 2015-11, Vol.5 (11), p.6719-6723
Main Authors: Kandel, Kapil, Chaudhary, Umesh, Nelson, Nicholas C, Slowing, Igor I
Format: Article
Language:English
Subjects:
biorenewables
copper oxide
fatty acids
fatty alcohols
iron oxide
mesoporous silica
NANOSCIENCE AND NANOTECHNOLOGY
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description The selective hydrogenation of fatty acids to fatty alcohols can be achieved under moderate conditions (180 °C, 30 bar H2) by simultaneously supporting copper and iron oxides on mesoporous silica nanoparticles. The activity of the cosupported oxides is significantly higher than that of each supported metal oxide and of a physical mixture of both individually supported metal oxides. A strong interaction between both metal oxides is evident from dispersion, XRD, TPR, and acetic acid TPD measurements, which is likely responsible for the synergistic behavior of the catalyst. Copper oxide is reduced in situ to its metallic form and thereby activates hydrogen. It is proposed that hydrogen spills over to iron oxide where fatty acids bind and are selectively reduced to the alcohol.
doi_str_mv 10.1021/acscatal.5b01664
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subjects biorenewables
copper oxide
fatty acids
fatty alcohols
iron oxide
mesoporous silica
NANOSCIENCE AND NANOTECHNOLOGY
title Synergistic Interaction between Oxides of Copper and Iron for Production of Fatty Alcohols from Fatty Acids
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