The influence of molybdenum and vanadium on the activity and selectivity of a cobalt Fischer-Tropsch catalyst

• Main Author: Viljoen, Elvera
• Other Authors: Van Steen, Eric
• Format: Doctoral Thesis
• Language: English
• Published: University of Cape Town 2014
• Subjects: Chemical Engineering
• Online Access: http://hdl.handle.net/11427/5385

Includes bibliographical references (p. 170-186). === Fischer-Tropsch catalysts tyically contain metals such as iron, cobalt and ruthenium. In this study a supported cobalt catalyst was used, in which cobalt was put on the support by colloidal impregnation. Some literature on CO hydrogenation indicates that molybdenum oxide and vanadium oxide used as a promoter may be beneficial for the activity and selectivity of a cobalt based catalyst. To eliminate the structural influence on the selectivity by using commercial MoO3 and V2O5 supports, and alumina support was modified with molybdenum and vanadium in an attempt to create molybdenum and vanadium oxide layer covering the alumina surface.