Synthesis and catalytic evaluation of hematite (α-Fe2O3) magnetic nanoparticles from iron sand for waste cooking oil conversion to produce biodiesel through esterification-transesterification method

13th Joint Conference on Chemistry

Widayat^1 ; Putra, Dionisius Andhika^1 ; Nursafitri, Izmi^1

Chemical Engineering Department, Faculty of Engineering, Diponegoro University, Semarang, Indonesia^1

关键词: Biodiesel production;    Calcination temperature;    Catalyst preparation;    Catalytic evaluation;    Chemical coprecipitation method;    Fatty acid methyl ester;    Magnetic nano-particles;    Trans-esterification methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/509/1/012035/pdf
DOI  :  10.1088/1757-899X/509/1/012035

来源: IOP

【 摘 要 】

Indonesia's catalyst needs to reach 2000 tons/year with active period of 1 up to 2 years. The catalyst requirement is largely filled with import catalysts. Iron sand has a potential to be used as a catalyst mainly because of the hematite magnetic mineral content (α-Fe2O3). α-Fe2O3 can be synthesized from iron sand using coprecipitation and calcination method. Performance of these synthesized catalyst evaluated through the production of biodiesel from waste cooking oil by esterification-transesterification method. The catalyst preparation by chemical coprecipitation method followed with calcination. Catalyst was characterized by using XRD, SEM-EDX, BET, and PSA and tested for biodiesel production. α-Fe2O3 phase was obtained at calcination temperature 650°C, 700°C, 750°C and 800°C. The best character is given at temperature 700°C. Biodiesel obtained meets SNI (Standar Nasional Indonesia) based on density, viscosity, and acid number. Yield of biodiesel obtained by using α-Fe2O3 calcined at 700°C reaches 86.781% while Fatty Acid Methyl Ester (FAME) content obtained reaches 87.880%.