SYNTHESIS AND CHARACTERIZATION OF NixFe3-xO4 NANOPARTICLES AND NixFe3-xO4/ZEOLITE NANOCOMPOSITES AND THE PRELIMINARY STUDY OF THEIR APPLICATIONS IN VISCOSITY REDUCTION OF HEAVY OIL

• Main Author: INSAN NUGRAHA (NIM : 20211011); Pembimbing I : Dr. Eng. Ferry Iskandar; Pembimbing II : Prof, MOHAMAD
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/16482
• Institution: Institut Teknologi Bandung

In this research, NixFe3-xO4 material and NixFe3-xO4/zeolite nanocomposites have been synthesized using microwave-assisted coprecipitation method. These materials were then applied as catalyst for reducing viscosity of heavy oil in aquathermolysis. Raw materials used in this method were NiCl2.6H2O, FeSO4.6H2O, dan FeCl3.7H2O. The reaction time to synthesize this material was varied from 0 to 5 minutes by using microwave power 500 W 2.45 GHz. XRD results showed that for NixFe3-xO4 with x = 0, or Fe3O4, all Fe3O4 diffraction peaks appeared for the used reaction time is 3 and 5 minutes. In addition, XRD results showed that the more Ni2+ ion amount in NixFe3-xO4 material the smaller crystal size produced. This result was caused by the presence of stronger interaction between Ni2+ and oxygen when Ni2+ ion substituted Fe2+ ion in NixFe3-xO4 material. <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> SEM results for Ni0.3Fe2.7O4 nanoparticles and Ni0.3Fe2.7O4/zeolite nanocomposite showed that both materials have spherical morphology. In addition, average particles sizes for both materials were 43 nm and 67 nm respectively. According to characterization of gas adsorption, synthesized Ni0.3Fe2.7O4 nanoparticles were mesoporous materials which have broad size distribution of pore i.e. 3-62 nm. <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> In the application of aquathermolysis reaction in heavy oil, water and catalysts were added to heavy oil in autoclave of temperature 120oC for 6 hours. According to experimental results, it was obtained that the catalytic properties of Fe3O4>Ni0.3Fe2.7O4/zeolite>zeolite>Ni0.3Fe2.7O4. These results showed that the adding of zeolite can increase the catalytic properties of Ni0.3Fe2.7O4 nanoparticles whereas the adding of nickel can reduce the catalytic properties of Fe3O4 nanoparticles.