Effect of Pre-Reduction on the Properties and the Catalytic Activity of Pd/Carbon Catalysts: A Comparison with Pd/Al2O3

Francesco Giannici, Riccardo Pellegrini, Giovanni Agostini, Carlo Lamberti, Giuseppe Leofanti, Alessandro Longo, Elena Groppo

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Abstract

The effect of pre-reduction in solution with chemical reagents on the catalytic performance and catalyst properties of Pd/carbon catalysts was systematically investigated with a multitechnique approach. The results are critically discussed in comparison to those recently obtained on analogous Pd/alumina catalysts. It was proved that the Pd phase on the carbon surface is characterized by a high mobility, opposite to what occurs on alumina. As a result, the Pd particles on carbon aggregate together during pre-reduction, with a consequent decrease in available metal surface. Pd particles remain aggregated also in reaction conditions; the decreased Pd dispersion negatively affects the catalyst activity in the debenzylation of 4-benzyloxyphenol.
Original languageEnglish
Pages (from-to)187-194
Number of pages8
JournalACS Catalysis
Volume4
Publication statusPublished - 2014

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this

Giannici, F., Pellegrini, R., Agostini, G., Lamberti, C., Leofanti, G., Longo, A., & Groppo, E. (2014). Effect of Pre-Reduction on the Properties and the Catalytic Activity of Pd/Carbon Catalysts: A Comparison with Pd/Al2O3. ACS Catalysis, 4, 187-194.