Cinnamyl Alcohol Oxidation Using Supported Bimetallic Au–Pd Nanoparticles: An Optimization of Metal Ratio and Investigation of the Deactivation Mechanism Under Autoxidation Conditions

Emilia Rucinska, Samuel Pattisson, Peter J. Miedziak, Gemma L. Brett, David J. Morgan, Meenakshisundaram Sankar, Graham J. Hutchings

Research output: Contribution to journalArticlepeer-review

Abstract

The aerobic oxidation of cinnamyl alcohol in toluene under autoxidation conditions has been studied using a range of 1 wt% Au–Pd/TiO2 catalysts. The catalysts have been studied to determine the effect of preparation method (impregnation and sol immobilisation) and metal ratio on the conversion of cinnamyl alcohol and the selectivity to cinnamaldehyde. The catalysts prepared by sol-immobilisation demonstrate higher selectivity to the desired aldehyde than the analogous impregnation materials. The most active catalyst was found to be 0.75 wt% Au–0.25 wt% Pd/TiO2 prepared by sol-immobilisation and this demonstrates the importance of metal ratio optimisation in this catalytic process. Furthermore, this metal ratio was found to be most stable under the reactions conditions with little change observed over multiple uses.

Original languageEnglish
Pages (from-to)99-112
Number of pages14
JournalTopics in Catalysis
Volume63
Issue number1-2
Early online date31 Jan 2020
DOIs
Publication statusPublished - 1 Mar 2020
Externally publishedYes

Keywords

  • Au–Pd
  • Bimetallic
  • Cinnamyl alcohol
  • Oxidation
  • Sol immobilisation

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