ACADSTAFF UGM
| Title | : | Utilization of vanillin to prepare sulfated Calix[4]resorcinarene as efficient organocatalyst for biodiesel production based on methylation of palmitic acid and oleic acid |
| Author | : |
Prof. Drs. Jumina, Ph.D. (1) YEHEZKIEL STEVEN KURNIAWAN (2) ALI BAHRI LUBIS (3) ELEONORA INDIRA L (4) Prof. Drs. Bambang Purwono, M.Sc., Ph.D. (5) Sugeng Triono, S.Si., M.Si. (6) |
| Date | : | 20 2023 |
| Keyword | : | Biodiesel,calix[4]resorcinarene,methyl palmitate,methyl oleate,organocatalyst,sulfated Biodiesel,calix[4]resorcinarene,methyl palmitate,methyl oleate,organocatalyst,sulfated |
| Abstract | : | Recently, biodiesel production from palm oils has been thoroughly investigated to substitute crude oil due to its scarcity. However, the biodiesel production process is time-consuming due to its slow kinetics; thus, concentrated sulfuric acid has been used to fasten the reaction process in some industries. Unfortunately, sulfuric acid is a toxic, corrosive, and non-environmentally friendly catalyst. In this study, we prepared sulfated Calix[4]resorcinarene derived from vanillin as an efficient organocatalyst to replace sulfuric acid. The catalytic activity of sulfated Calix[4]resorcinarenes was evaluated through the methylation of palmitic acid and oleic acid as model compounds due to their abundant amounts in palm oil. The Calix[4]resorcinarene and sulfated Calix[4]resorcinarenes have been obtained through a one-pot reaction in 71.8–98.3% yield. Their chemical structures were confirmed by using FTIR, NMR and HRMS spectrometry analyses. The results showed that the sulfated Calix[4]resorcinarene exhibited high catalytic activity for methyl palmitate and methyl oleate productions in 94.8 ± 1.8 and 97.3 ± 2.1% yield, respectively, which was comparable to sulfuric acid (96.3 ± 1.8 and 95.9 ± 2.5%). The optimum condition was achieved by using 0.020 wt equivalent of organocatalyst for 6 h reaction process at 338 K. The methylation of palmitic acid and oleic acid fits well with the first-order kinetic model (R2 = 0.9940–0.9999) with a reaction rate constant of 0.6055 and 1.1403 h-1, respectively. Further investigation reveals that the hydroxyl group of vanillin plays a pivotal role in the organocatalytic activity of sulfated Calix[4]resorcinarene. |
| Group of Knowledge | : | Kimia |
| Original Language | : | English |
| Level | : | Internasional |
| Status | : |
Published
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