3
80
Zwitterionic Surfactant Stabilized Palladium Nanoparticles as Catalysts in Aromatic Nitro Compound Reductions
J. Braz. Chem. Soc.
General procedure for the reduction of aromatic nitro
compounds with H2
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In a Fischer-Porter glass flask, 0.9 mL of 0.015 mol L−1
aromatic nitro compound dissolved in THF, an aliquot of
palladium and 90 µL of 2.0 mol L−1 NaCl solution was
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Nome, F.; Langmuir 2012, 28, 833.
dispersed in 1.9 mL of H O. The reaction system was
2
pressurized to 4 bars with hydrogen gas, followed by
pressure release through an auxiliary bleed valve. This
procedure was repeated three times to ensure the absence
of other gases in the reaction vessel. The system was
pressurized again at 4 bars, the mixture was vigorously
stirred with a magnetic bar at 1500 rpm and the pressure was
maintained constant. After 4 h, the pressure was released
and diethyl ether was added to glass flask. The organic
phase was separated and analyzed by GC/MS.
15. Souza, F. D.; Souza, B. S.; Tondo, D. W.; Leopoldino, E. C.;
Fiedler, H. D.; Nome, F.; Langmuir 2015, 31, 3587.
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1
9. Campbell, P. S.; Santini, C. C.; Bayard, F.; Chauvin, Y.;
Supplementary Information
Colliere, V.; Podgorsek, A.; Gomes, M. F. C.; Sa, J.; J. Catal.
2
010, 275, 99.
Supplementary data (TEM microscopy of Pd NPs,
UV-Vis absorption spectra, ESI-MS and ESI-MS/MS
spectrum and thermodynamics plots for reduction
aromatic nitro compound) are available free of charge at
http://jbcs.sbq.org.br as PDF file.
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Acknowledgements
24. Zhong, R. Y.; Yan, X. H.; Gao, Z. K.; Zhang, R. J.; Xu, B. Q.;
Catal. Sci. Technol. 2013, 3, 3013.
We are grateful to INCT-Catálise, PRONEX, FAPESC,
CNPq and CAPES for their support of this work and
to LCME/UFSC for technical support during electron
microscopy work.
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