Catalysis Science & Technology
Paper
selectivity towards the (Z)-3-hexene formation at full conver-
sions. It should be highlighted that ligands do not only play
a role in the stabilization of the NPs, but also in the capacity
to modulate the activity and selectivity of the NPs in catalysis.
The magnetic character of Ni@L permits the recovery of the
Ni NPs from the reaction medium after the catalysis by an ex-
ternal magnet. The NPs were recyclable up to 3 times
maintaining good activity values. This fact, together with the
good selectivity of these catalytic systems without the need of
toxic salts as poison, makes them potentially useful catalysts
for semi-hydrogenation reactions.
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Conflicts of interest
There are no conflicts to declare.
Acknowledgements
The authors thank CNRS, UPS-Toulouse, INSA, “IDEX/Chaires
d'attractivité l'Université Fédérale Toulouse Midi-Pyrénées”,
“Instituto de Tecnología Química” (ITQ; UPV-CSIC), “Juan de
la Cierva” programme (IJCI-2016-27966), “Primero Proyectos
de Investigación” (PAID-06-18), “Instituto de Investigaciones
Químicas” (IIQ; CSIC-US), “Ministerio de Ciencia, Innovación
y Universidades” (MCIU/AEI), FEDER funds of the European
Union (PGC2018-095768-B-I00) and ERC Advanced Grant
(MONACAT 2015-694159) for financial support. We also thank
L. Datas for the TEM facilities (UMS Castaing) and S. Cayez
for the HRTEM measurements.
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