Synthesis of Metal-organic Frameworks Based on Zr4+ and Benzene 1,3,5-Tricarboxylate Linker as Heterogeneous Catalyst in the Esterification Reaction of Palmitic Acid

2nd Materials Research Society of Indonesia Meeting

Larasati, I.^1 ; Winarni, D.^1 ; Putri, F.R.^1 ; Hanif, Q.A.^1 ; Lestari, W.W.^1

Research Group of Porous Material for Sustainability, Chemistry Department, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Jl. Ir Sutami No.36A, Kentingan-Jebres, Central Java, Surakarta

57126, Indonesia^1

关键词: Catalytic esterification;    Esterification reactions;    Heterogeneous catalyst;    High specific surface area;    High thermal stability;    Metal organic framework;    Metalorganic frameworks (MOFs);    Solvothermal reactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/214/1/012006/pdf
DOI  :  10.1088/1757-899X/214/1/012006

来源: IOP

【 摘 要 】

The conversion of the biomass into biodiesels via catalytic esterification and trans-esterification became an interesting topic due to the depletion of fossil-based energy. Homogenous catalysts such as HCl, H2SO4and NaOH commonly used as catalyst, however, the use of this kind of catalyst causes more problems, such as the difficulties on the separation from the product and the pollution effect on the environment. Heterogeneous catalysts, such as Metal-Organic Frameworks (MOFs) give an alternative promising way to substitute these limitations due to their strong catalytic site, porosity, high specific surface area, and easy-separation and reusable properties. Herein, we reported the synthesis of MOFs based on zirconium(IV) and H3BTC linker (H3BTC = benzene-1,3,5-tricarboxylic acid) by solvothermal and reflux method. Solvothermal reaction at 120 °C was found to be the optimum method, that was indicated by most crystalline product compared to the simulated pattern in XRD analysis. The formation of the framework was characterized by FTIR analysis, which showed a significant shift from 1722 cm-1to 1620 cm-1. The synthesized Zr(IV)-BTC was thermally stable up to 322°C as shown by TG/DTA analysis. This high thermal stability was related to the high oxidation state of Zr(IV), which give a significant covalent character to the Zr-O bond.