RT journal article
T1 Fe─Co Synergism in the Heterogeneous Catalytic Conversion of Cyclohexane to KA Oil
A1 Stucchi, Marta
A1 Vomeri, Alessandro
A1 Sommaruga, Lorenzo
A1 Fero, Erisa
A1 Hungría Hernández, Ana Belén
A1 Barlocco, Ilaria
A1 Prati, Laura
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Co
K1 Cyclohexane oxidation
K1 Fe
K1 Inverse microemulsion
K1 KA oil
AB The oxidation of cyclohexane is a crucial bulk process to producecyclohexanol and cyclohexanone (KA oil), used for thesynthesis of adipic acid and further polyamide fibers and plasticsproduction. The industrial process is carried out at hightemperature in the presence of a cobalt-based homogeneouscatalyst, which no longer meets the sustainability requirementsimposed by the increase of environmental concerns. Thisresearch aimed to investigate the potential of Co-based heterogeneouscatalysts, where Co is coupled with Fe. Fe has beenselected considering its ability of decomposing hydroperoxidesalong with its oxidation-reduction properties, which can helpthe homolytic cleavage of the cyclohexyl hydroperoxide intermediatein the cyclohexane oxidation. Heterogeneous Fe─Cocatalysts supported on alumina have been thus synthesized bythree different methods, i.e., sol-immobilization (SOL), wetnessimpregnation (IW), and inverse microemulsion (ME). Fe- and Coandthe corresponding Fe1Co1/Al2O3 catalysts prepared by differentpreparation methods resulted in different physical andmorphological features and in turn in a different catalytic activityand selectivity toward cyclohexane oxidation. In particular,the synthesis by inverse microemulsion technique resulted in thehighest metal dispersion, where Co was in contact with Fe. Thehighest dispersion of Co resulted in the highest activity, wherethe 2 wt% Co/γ -Al2O3-ME was the most active catalyst, producing5.1 mmol of KA oil after 5 h of reaction with a selectivity of96.0%; on the other hand, the presence of Fe allowed to increasethe selectivity, as the 2 wt% Fe1Co1/γ -Al2O3-ME catalyst produced4.7 mmol of KA oil after 5 h of reaction with a selectivity of 98.8%.
PB Wiley-VCH GmbH
SN 1867-3899
YR 2025
FD 2025-07-12
LK http://hdl.handle.net/10498/38996
UL http://hdl.handle.net/10498/38996
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026