STUDY OF CATALYTIC POTENTIAL OF MOF DUT-52 AND UiO-67 IN ESTERIFICATION OF OLEIC ACID AND OXIDATION OF BENZYL ALCOHOL

• Main Author: Astria, Efwita
• Format: Theses
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/38234
• Institution: Institut Teknologi Bandung

Zirconium based metal organic framework (MOF) with 2,6- naphtalenedicarboxylate linker (DUT-52) and biphenyl-4,4-dicarboxylate linker (UiO-67) has been synthesized by using solvothermal method. The resulted materials were characterised by Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (PXRD), thermogravimetric analysis (TGA), and N2 physisorption. FTIR data confirmed that bond order changes of free ligand carbonyl group shifting to lower wavenumber in Zr-coordinated ligand. PXRD data showed characteristic diffraction at 2? 6.4° and 7.5° for DUT-52 and 2? 5,7° and 6,5° for UiO-67. The synthesized DUT-52 has thermal stability up to 540 °C. Catalytic potential of DUT-52 and UiO-67 were investigated in esterification of oleic acid to methyl oleate and oxidation of benzyl alcohol to benzaldehyde. Esterification of oleic acid to methyl oleate was carried out at 60 °C for 6 hours. The product of reaction was confirmed by gas chromatography with FID using authentic sample. Gas chromatography (FID) showed the catalytic activity of UiO-67 was not significantly different with DUT-52 in esterification reaction (27- 28%). The effect of surface area on catalytic activity was also studied by comparing DUT-52 as synthesized (surface area = 15,5 m2/g) and DUT-52 previously synthesized (surface area = 414 m2/g). DUT-52 with higher surface area showed better catalytic activity (26%) than DUT-52 with lower surface area(1%). Oxidation of benzyl alcohol was carried at 90° for 6 hours with DUT- 52. In both reaction, catalyst could be easy separated from the system with simple centrifugation.