Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Glycerol oxidation using MgO and Al2O3 supported gold and gold-palladium nanoparticles prepared in the absence of polymer stabilisers

Dodekatos, Georgios, Abis, Laura, Freakley, Simon, Tüysüz, Harun and Hutchings, Graham ORCID: 2018. Glycerol oxidation using MgO and Al2O3 supported gold and gold-palladium nanoparticles prepared in the absence of polymer stabilisers. ChemCatChem 10 (6) , pp. 1351-1359. 10.1002/cctc.201800074

[thumbnail of cctc.201800074 accepted for ORCA.pdf]
PDF - Accepted Post-Print Version
Download (862kB) | Preview
[thumbnail of cctc.201800074_Supporting Information_revised.pdf]
PDF - Supplemental Material
Download (697kB) | Preview


Au and AuPd nanoparticles supported on MgO and Al2O3 supports were employed for the selective aqueous phase oxidation of glycerol under basic conditions. Catalysts were prepared by sol-immobilisation without the addition of a stabilizing agent such as polyvinyl alcohol (PVA), which is generally added to stabilize the noble metal sol prior to immobilisation on. The obtained materials prepared with and without stabilizing agent were active for glycerol oxidation and showed similar catalytic performances - implying that the stabilizing polymer is not required to obtain active materials. Depending on the support used, it was possible to tailor the selectivity towards desired oxidation products by using catalysts prepared with or without stabilizing agent. PVA-free Au/ Al2O3 exhibited a remarkably high selectivity towards tartronic acid (40% at 97% conversion), which was not observed for the analogous sample prepared with PVA. Selective glycerol oxidation performed under base-free conditions over AuPd/MgO catalysts also corroborated the previous results that the presence of a stabilizing polymer is not required to prepare active catalysts by sol-immobilisation. Thus, a facile way is presented herein to circumvent the inherent drawbacks encountered by the use of polymer stabilizers during catalyst preparation and the experimental results in fact suggest that the presence of the polymer stabilisers can affect the reaction pathways and control selectivity.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Cardiff Catalysis Institute (CCI)
Publisher: Wiley
ISSN: 1867-3880
Date of First Compliant Deposit: 6 February 2018
Date of Acceptance: 31 January 2018
Last Modified: 16 Apr 2024 10:13

Citation Data

Cited 24 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item


Downloads per month over past year

View more statistics