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The preparation and study of sol–gel synthesized Co/Zn/TiO2 Fischer–Tropsch catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
44123 46004 2007 9 PDF Available
Title
The preparation and study of sol–gel synthesized Co/Zn/TiO2 Fischer–Tropsch catalysts
Abstract

The sol–gel method was used to prepare Co(10 wt%)/Zn(x)/TiO2 (x = 0, 1, 5 and 10 wt%) catalysts. Two methods were used to gel the catalyst precursors (Co, Zn, TiO2): (i) co-gelling all the components and (ii) gelling the titania support alone followed by the impregnation of zinc and cobalt precursors. The catalysts prepared by co-gelling all the catalysts components together were tested for Fischer–Tropsch (FT) activity and <5% conversion was obtained using standard FT conditions. This finding correlates with the strong interaction between the support and the Co, even in the presence of zinc. Impregnation of the sol–gel prepared titania support with zinc and cobalt precursors resulted in different degrees of interaction between the support and cobalt catalysts (due to the presence of zinc) as determined from TPR and XPS measurements. However, the modified sol–gel prepared catalysts also showed low activity towards Fischer–Tropsch (FT) when compared to the catalysts prepared using Degussa titania as support.

Graphical abstractThe sol–gel method was used to prepare Co(10 wt%)/Zn(x)/TiO2 (x = 0, 1, 5 and 10 wt%) materials that were tested as Fischer–Tropsch catalysts. While the influence of zinc was found to enhance FT activity, the poor reducibility of Co in these catalysts led to the generation of poor FT catalysts. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Fischer–Tropsch catalysis; Zinc; Cobalt; XPS; Sol–gel
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The preparation and study of sol–gel synthesized Co/Zn/TiO2 Fischer–Tropsch catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 317, Issue 2, 7 February 2007, Pages 195–203
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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
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