Methyl Ester Production via Heterogeneous Acid-Catalyzed Simultaneous Transesterification and Esterification Reactions

4th International Conference on Advanced Materials Science and Technology

Indrayanah, S.^1 ; Erwin^2 ; Marsih, I.N.^3 ; Suprapto^4 ; Murwani, I.K.^1

Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya

60111, Indonesia^1

Department of Chemistry, Universitas Mulawarman, Samarinda

75119, Indonesia^2

Department of Chemistry, Institut Teknologi Bandung, Bandung

40132, Indonesia^3

Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya

60111, Indonesia^4

关键词: Acid catalyst;    Crude palm oil;    Esterification reactions;    Heterogeneous acid catalysts;    Methyl esters;    Optimum conditions;    Rutile structure;    Thermally stable;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/202/1/012069/pdf
DOI  :  10.1088/1757-899X/202/1/012069

来源: IOP

【 摘 要 】

The heterogeneous acid catalysts (MgF2and ZnF2) have been used to catalyze the simultaneous transesterification and esterification reactions of crude palm oil (CPO) with methanol. Catalysts were synthesized by sol-gel method (combination of fluorolysis and hydrolysis). The physicochemical, structural, textural, thermal stability of the prepared catalysts was investigated by N2adsorption-desorption, XRD, FT-IR, SEM and TG/DTG. Both MgF2and ZnF2have rutile structures with a different phase. The surface area of ZnF2is smaller than that of MgF2, but the pore size and volume of ZnF2are larger than those of MgF2. However, these materials are thermally stable. The performance of the catalysts is determined from the yield of catalysts toward the formation of methyl ester determined based on the product of methyl ester obtained from the reaction. The catalytic activity of ZnF2is higher than MgF2amounted to 85.21% and 26.82% with the optimum condition. The high activity of ZnF2could be attributed to its pore diameter and pore volume but was not correlated with its surface area. The yield of methyl ester decreased along with the increase in molar ratio of methanol/CPO from 85.21 to 80.99 for ZnF2, respectively.