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Influence of potassium on the competition between methane and ethane in steam reforming over Pt supported on yttrium-stabilized zirconia

Paper ID Volume ID Publish Year Pages File Format Full-Text
42989 45950 2008 6 PDF Available
Title
Influence of potassium on the competition between methane and ethane in steam reforming over Pt supported on yttrium-stabilized zirconia
Abstract

The effect of addition of potassium to Pt supported on yttrium-stabilized zirconia (PtYSZ) catalyst for steam reforming of methane, ethane and methane/ethane mixtures was explored. Addition of potassium has a positive effect on preferential steam reforming of methane in mixtures of methane and ethane over Pt/YSZ catalysts. The activity of potassium-modified catalysts increased with time-on-stream during steam reforming of mixtures of methane and ethane, while the ratio of reaction rates of methane and ethane remained constant. Most importantly, it was demonstrated that the presence of potassium prevents competition between methane and ethane during steam reforming. The reaction rate ratio in methane/ethane mixtures is changed from preferential ethane reforming on PtYSZ towards preferential methane conversion as a result of addition of potassium.

Graphical abstractThis study shows that the steam reforming rates of methane and ethane are affected differently by the presence of potassium on supported Pt catalysts. As a result, competition effects in mixtures containing the two hydrocarbons diminished and improved methane conversion was possible.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Steam reforming; Methane; Ethane; Mixture; Pt; Potassium
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Influence of potassium on the competition between methane and ethane in steam reforming over Pt supported on yttrium-stabilized zirconia
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 346, Issues 1–2, 31 August 2008, Pages 90–95
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