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

Paper ID Volume ID Publish Year Pages File Format Full-Text
41112 45877 2012 7 PDF Available
Title
Promotion of Co/carbon sphere Fischer–Tropsch catalysts by residual K and Mn from carbon oxidation by KMnO4
Abstract

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.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (131 K)Download as PowerPoint slideHighlights► Carbon spheres (CSs) preparation by a direct chemical vapour deposition method. ► CSs functionalisation by KMnO4 and HNO3 functionalising agents. ► 5% Co/CS KMnO4 functionalised and 5% Co/CS HNO3 functionalised catalyst evaluation in FTS. ► Investigation of K and Mn promoter effects on 5% Co/CS HNO3 catalysts in FTS.

Keywords
Fischer–Tropsch synthesis; Cobalt; Manganese; Carbon spheres; Potassium
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Promotion of Co/carbon sphere Fischer–Tropsch catalysts by residual K and Mn from carbon oxidation by KMnO4
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 413–414, 31 January 2012, Pages 223–229
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us