Fe3O4 NANOFLUID SYNTHESIS AS CATALYST IN AQUATHERMOLYSIS PROCESS

• Main Author: ASBAHRI ( NIM : 10210013), ALFAJRI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/17888
• Institution: Institut Teknologi Bandung

Fe3O4 nanofluids as a catalyst in aquathermolysis process has been successfully synthesized by using a two-step method. The two-step method started with synthesis Fe3O4 nanoparticles using coprecipitation method and then continued by dispersion of the obtained Fe3O4 nanoparticles into a mixture of water and ethylene glycol (EG) with the help of ultrasonic bath for 2 hours. In this study, the additional volume of water and EG was varied base on the total of based fluid to <br /> <br /> <br /> <br /> <br /> determine the stability of Fe3O4 nanoparticles in nanofluids. The results obtained were characterized using X-Ray Diffraction (XRD) and Dynamic Light Scattering <br /> <br /> <br /> <br /> <br /> (DLS). From XRD results showed that Fe3O4 nanoparticles was formed with the crystal size is 11.8 nm. The best stability of Fe3O4 nanofluid obtained when ratio <br /> <br /> <br /> <br /> <br /> of water and EG is 80% : 20% on the total of based fluid volume, while the particle size distribution in nanofluids is 309 nm. The catalyst test were carried <br /> <br /> <br /> <br /> <br /> out in laboratory scale by simulating the aquathermolysis process by mixing heavy oil, water, and Fe3O4 nanofluids in an autoclave and heated at temperature 200 oC for 6 hours. The result proved that under the use of nanofluids, viscosity of heavy oil decrease up to 71.3%, better than one without catalyst which decrease by only 40.2%.