NANOSHEET MFI ZEOLITE-SUPPORTED COBALT CATALYST FOR FISCHER-TROPSCH REACTION

• Main Author: RADIKAPRATAMA (NIM : 10508049); Pembimbing I : I Nyoman Marsih, Ph.D; Pembimbing II : Dr.rer, RANDY
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/16929
• Institution: Institut Teknologi Bandung

Zeolite is a natural crystalline material based on hydrated alumino-silicates that has a characteristic of micropore and cavity in its framework. Along with the development of <br /> <br /> <br /> <br /> <br /> technology, over 200 framework types of synthetic zeolites have been discovered. The crystal morphology of MFI zeolite can be converted to nanosheet morphology to increase its <br /> <br /> <br /> <br /> <br /> surface area for dispersing the cobalt active site. In this research, nanosheet MFI zeolite was hydrothermally synthesized using diquarterner amine (dC5I2) as an organic template. The synthesized zeolite was then used as solid support for Fischer-Tropsch cobalt catalysts. The zeolites were characterized using XRD, N2 physisorption, 29Si and 27Al MAS NMR and SEM. The diffraction pattern of the zeolite showes the presence a quartz impurity and MTW <br /> <br /> <br /> <br /> <br /> type zeolite although a hint of MFI peak is shown in lower intensity. The synthestic method used in this work failed to produce nanosheet MFI zeolite as the main product because the organic template undertook Hoffman elimination to olefin, water and tertiary amine. Nanosheet MFI zeolite has smaller and rough surface compare to MFI zeolite with ”coffinlike” shape. However coffin-like crystal was discovered in nanosheet MFI as a mixture. MAS NMR analysis indicates that aluminium and silicon in the zeolite are tetrahedrally coordinated. The zeolites were impregnated by cobalt nitrate solution to form CoO/zeolite catalyst with cobalt mass-percentage of 5%. The diffraction pattern showed no structural changes of the zeolite after the addition of CoO. Upon the addition of CoO, the zeolite <br /> <br /> <br /> <br /> <br /> surface area increased from 6,36 to 42,50 m2/g, while pore volume decreased from 0,12 to 0,05 cm3/g. EDX analysis confirmed the formation of CoO on the zeolite surfaces after impregnation and the mass percentage of cobalt was found to be 7,95%.