fulltext.study @t Gmail

Copper-modified alumina as a support for iron Fischer–Tropsch synthesis catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
43433 45969 2007 8 PDF Available
Title
Copper-modified alumina as a support for iron Fischer–Tropsch synthesis catalysts
Abstract

In the present study, the effect of Cu-modified Al2O3 on the properties of Al2O3-supported Fe catalysts in the Fischer–Tropsch synthesis was investigated. Ten weight percent Cu was first impregnated into γ-alumina to produce Cu-modified Al2O3 supports; then 20 wt.% of Fe and (in some cases) 1 wt.% Cu were added to the supports by the sequential impregnation method. Two different pretreatment methods (drying or drying and calcining) were employed after each metal impregnation. It was found that the use of Cu-modified Al2O3 supports increased significantly the overall activity of the Fe/Al2O3 catalysts. Addition of 1% Cu as a reduction promoter to the Cu-modified supported Fe catalysts was not necessary since it did not further enhance the activity of the catalysts. There were no changes in FT product selectivity, chain growth probability (α), or olefin selectivity due to any effect of the Cu-modified Al2O3 or Cu-promotion. However, the more calcination steps used during preparation, the higher the catalyst activity obtained. Cu-modification of the alumina most probably diminished the interaction/reaction of the Fe with the support, thereby improving its chemisorption and catalytic properties.

Graphical abstractIt was found that the use of Cu-modified Al2O3 supports increased significantly the overall activity of the Fe/Al2O3 catalysts. There were no changes in FT product selectivity, chain growth probability (α), or olefin selectivity due to any effect of the Cu-modified Al2O3 or Cu-promotion. However, the more calcination steps used during preparation, the higher the catalyst activity obtained.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Iron catalysts; Alumina-supported catalysts; Copper modification; Fischer–Tropsch synthesis
First Page Preview
Copper-modified alumina as a support for iron Fischer–Tropsch synthesis catalysts
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 332, Issue 1, 1 November 2007, Pages 130–137
Authors
, , , , , , ,
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