Investigation of epoxidation of used cooking oils with homogeneous and heterogeneous catalysts

0507017 - ÚMCH 2020 RIV GB eng J - Článek v odborném periodiku
Kurańska, M. - Beneš, Hynek - Prociak, A. - Trhlíková, Olga - Walterová, Zuzana - Stochlińska, W.
Investigation of epoxidation of used cooking oils with homogeneous and heterogeneous catalysts.
Journal of Cleaner Production. Roč. 236, 1 November (2019), s. 1-9, č. článku 117615. ISSN 0959-6526. E-ISSN 1879-1786
Grant CEP: GA MŠMT(CZ) LO1507
Institucionální podpora: RVO:61389013
Klíčová slova: circular economy * municipal waste * epoxidation
Obor OECD: Polymer science
Impakt faktor: 7.246, rok: 2019
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0959652619324357?via%3Dihub

A sustainable solvent-free process of the utilization of waste cooking oils has been developed using different types of catalysts. The process offers a tool to create a cleaner technology for the production of bio-components which will be building blocks of the sustainable polymeric materials. Used cooking oils collected from local restaurants have been epoxidized using homogeneous (H2SO4, H3PO4) and heterogeneous (Amberlite IR-120) catalysts. The epoxidation reactions were carried out using “in situ”-formed peroxy acid. The effect of the catalysts on the epoxidation process and the properties of the final products were described. The highest conversion (81%) was achieved for the reaction catalyzed by H2SO4, but the selectivity of this reaction was the lowest (47%). On the other hand, the highest selectivity was obtained for the reaction performed using H3PO4, but the yield of this reaction (26%) was the lowest. In the case of ion-exchange resin (Amberlite IR-120), the conversion of double bonds, selectivity and efficiency were 55, 74 and 40%, respectively. The extent of side reactions depended on the type of used catalyst as it was confirmed by FTIR, GPC, MALDI-TOF as well as by the changes of the product's viscosity. The results should play an important role in the future development of a new approach to the environmentally friendly solvent-free epoxidation process of waste oils.
Trvalý link: http://hdl.handle.net/11104/0298119