Epoxidation of Castor Oil Fatty Acid Methyl Esters (COFAME) as a Lubricant base Stock Using Heterogeneous Ion-exchange Resin (IR-120) as a Catalyst
| Autor: | Vaibhav V. Goud, Venu Babu Borugadda |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Degree of unsaturation
Thermogravimetric analysis TGA Epoxide Heterogeneous catalysis oxirane oxygen content (OOC) Catalysis Acetic acid chemistry.chemical_compound chemistry Energy(all) Castor oil Castor oil fatty acid methyl esters (COFAME) ion-exchange resin epoxidation medicine Organic chemistry Hydrogen peroxide medicine.drug |
| Zdroj: | Energy Procedia. 54:75-84 |
| ISSN: | 1876-6102 |
| DOI: | 10.1016/j.egypro.2014.07.249 |
| Popis: | Castor oil fatty acid methyl esters (COFAME) epoxide was derived by In-situ epoxidation reaction from COFAME to be used as a bio-lubricant basestock. During the reaction acetic acid was acted as an active oxygen carrier and hydrogen peroxide (H 2 O 2 ) was an oxygen donor in the presence of strongly acidic cation ion-exchange resin (Amberlite IR 120) as a heterogeneous catalyst. In-situ epoxidation reaction was carried out at H 2 O 2 , acetic acid to ethylenic unsaturation molar ratio of 1.5 and 0.5 respectively; catalyst loading 15 wt%, reaction temperature 60 °C and reaction time 10 h. The objective of the study was to improve the thermo-oxidative stability of epoxidised COFAME. The resulting products were confirmed by 1 H NMR, FTIR spectroscopy and also analysed for oxirane oxygen content (OOC). Required physico-chemical properties were estimated for unmodified COFAME and epoxidised COFAME. Thermo-oxidative stability of epoxide was determined by thermo gravimetric analysis (TGA) technique in an inert and oxygen atmosphere. Thermo-oxidative stability of COFAME and its epoxide was compared with conventional servo hydraulic lubricant base stock oil. The present work has clearly illustrated significant improvement in the thermo-oxidative stability of COFAME epoxide i.e. after the structural modification. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|