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Preparation and Characterization of Well-defined Fe/Si02 Spherical Catalysts for Fischer Tropsch Synthesis (FTS)

MOHAMAD YUSOFF, FAISAL (2009) Preparation and Characterization of Well-defined Fe/Si02 Spherical Catalysts for Fischer Tropsch Synthesis (FTS). Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

The aim of this project is to study the preparation methods of iron nanocatalysts on Si02 support for the Fischer Tropsch synthesis (FTS). The first phase is to prepare and characterize the silica spheres. In the second phase, iron nanocatalysts were synthesized and deposited on the silica support. Iron particles were synthesized using the ammonia deposition method and impregnation method. The iron metal was attached to silica spheres which have BET surface area of 61m2/g at 2, 3 and 5wt% loadings. Variables such as the metal loading, ageing time and calcinations temperatures were studied during the catalysts preparation. There are two methodologies that involved in this project which are Ammonia Deposition Method and Impregnation Method. Different loadings will result a different color of the sample and different results for characterization. There are several ways of characterization that will involved in this project such as Scanning Electron Microscope (SEM), Xray Diffraction (XRD), Transmission Electron Microscope (TEM), Energy Dispersive Xray (EDX) . EDX analysis showed the presence of Si, O and Fe elements in the catalyst. The TEM images from 5wt% impregnated catalyst showed iron particles with diameter ranging from 19 nm to 34 nm deposited on silica spheres. The average diameter of Si02 sphere is 168nm. The inconsistencies of metal attachments on the silica for impregnation method seem to be due to inefficient stirring during preparation. XRD analysis indicates the amorphous nature ofthe catalyst.

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Reactor Technology
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Users 2053 not found.
Date Deposited: 22 Oct 2013 12:08
Last Modified: 22 Oct 2013 12:08
URI: http://utpedia.utp.edu.my/id/eprint/9388

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