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Green Chemistry
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ARTICLE
Journal Name
2.
3.
reported Pd system had an E-factor of 140 (mostly due to the
synthesis of the supporting material SBA-15).58 Other catalysts,
such as Cu–Ni–AAPTMS@GO and CeO2-ZrO2 composites
supported Pt nanoparticles, have E-factors of <350 and <250,
respectively.59-60
208, 323-327.
DOI: 10.1039/C9GC01596E
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Ruthenium-based catalysts supported on ceramic-cores of
scrap automotive catalytic converters were efficiently
synthesized by a mechanochemical approach followed by a
chemical reduction. The interaction between Ru and the
recycled catalytic converter strongly influenced the catalytic
performances of ruthenium. Such catalytic response could be
associated with an enhancement of charge transfer and the
presence of noble metal particles. Synthesized catalysts were
tested in the selective conversion of CAL to COL in continuous
flow conditions. A complete analysis of the reaction was
performed changing the flow rate and metal loading catalysts.
In order to prove the effective influence of the catalytic
converter support on the conversion of CAL, different catalysts
were prepared using same Ru-loading on standard supporting
materials.
8.
9.
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12.
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14.
15.
16.
17.
In conclusion, a Ru loading of 10%wt allowed the best catalytic
performance, including the conversion of CAL up to 95%, with
selectivity to COL up to 80%.
This work opens to the possibility of reuse scrap automotive
catalytic converters as efficient support materials (for catalyst
design) and even as catalysts, to be reported in due course.
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Conflicts of interest
The authors declare no conflicts of interest.
Acknowledgements
The authors thank Mr. Rafael Ángel Gómez Haro and Provaluta
España Reciclaje de Metales, S.L., Córdoba (ES), for the supply
of scrap automotive catalytic converters. The authors thank
Prof. Victor Sebastian, from University of Zaragoza, for HRTEM
studies conducted at the Laboratorio de Microscopias
Avanzadas, Instituto de Nanociencia de Aragon, Universidad
de Zaragoza, Spain. This project has received funding from the
European Union’s Horizon 2020 research and innovation
programme under the Marie Skłodowska-Curie grant
agreement No 721290. This publication reflects only the
author’s view, exempting the Community from any liability.
been prepared with support from RUDN University program
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10 | J. Name., 2012, 00, 1-3
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