Promotion of Co/carbon sphere Fischer-Tropsch catalysts by residual K and Mn from carbon oxidation by KMnO4

作者：Moyo Mahluli; Motchelaho Myriam A M; Xiong Haifeng; Jewell Linda L; Coville Neil J^*

来源：Applied Catalysis A: General , 2012, 413: 223-229.

DOI：10.1016/j.apcata.2011.11.012

• Fischer-Tropsch synthesis
• Cobalt
• Manganese
• Carbon spheres
• Potassium

The effect of functionalising agents (KMnO4 and HNO3) on the surface properties of carbon spheres (CSs) produced from acetylene gas by a chemical vapour deposition method, was examined. Cobalt was loaded onto the differently functionalised CSs using the deposition precipitation (DPU) method and the Co/CS catalysts were tested for Fischer-Tropsch (FT) activity. FT studies, revealed differences in activity and selectivity for the HNO3 and KMnO4 functionalised catalysts. Investigation of the role of Mn (0.05%) and K (0.05%) on Co/CS FT catalysts functionalised with HNO3 revealed that these differences were due to the presence of residual MnO4- ions remaining after the surface functionalisation reaction.

• 出版日期2012-1-31