Cinnamyl alcohol oxidation using supported bimetallic Au-Pd nanoparticles: An optimization of metal ratio and investigation of the deactivation mechanism under autoxidation conditions

Rucinska, Emilia, Pattisson, Samuel, Miedziak, Peter J., Brett, Gemma L., Morgan, David J. ORCID: https://orcid.org/0000-0002-6571-5731, Sankar, Meenakshisundaram ORCID: https://orcid.org/0000-0002-7105-0203 and Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560 2020. Cinnamyl alcohol oxidation using supported bimetallic Au-Pd nanoparticles: An optimization of metal ratio and investigation of the deactivation mechanism under autoxidation conditions. Topics in Catalysis 63 , pp. 99-112. 10.1007/s11244-020-01231-0

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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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	Springer Verlag
ISSN:	1022-5528
Date of First Compliant Deposit:	3 February 2020
Date of Acceptance:	25 January 2020
Last Modified:	11 Oct 2023 21:05
URI:	https://orca.cardiff.ac.uk/id/eprint/129276

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