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Partial oxidation of methane over Pt–Ru bimetallic catalyst for syngas production

Paper ID Volume ID Publish Year Pages File Format Full-Text
43488 45972 2008 8 PDF Available
Title
Partial oxidation of methane over Pt–Ru bimetallic catalyst for syngas production
Abstract

A bimetallic catalyst (Pt–Ru 50/50) has been prepared for methane partial oxidation. Total metal load was 1 wt%. The support was alumina mixed with 25 wt% of a ceria–zirconia mixture. This because of the good performances of alumina for such applications and to exploit the oxygen buffer effect of the ceria–zirconia system. The catalyst has been prepared by incipient wetness and characterized by means of XRD, BET surface area, TPR/TPO and SEM–EDS analyses. It showed good activity and high selectivity towards CO and H2, produced in a ratio suitable for Fisher–Tropsch applications. The effect of spatial velocity (GHSV) has been investigated; ramping temperature up and down, some hysteresis has been evidenced, especially at the highest GHSV, mainly caused by thermal effects. Overall, 100% conversion of methane to H2 and CO at the appropriate syngas ratio (2/1) can achieved easily and with stability.

Graphical abstractA bimetallic catalyst (Pt–Ru 50/50) has been prepared for methane partial oxidation. Total metal load was 1 wt%. The support was alumina mixed with 25 wt% of a ceria–zircona mixture. This because of the good performances of alumina for such applications and to exploit the oxygen buffer effect of the ceria–zirconia system. The catalyst has been prepared by incipient wetness and characterized by means of XRD, BET surface area, TPR/TPO and SEM–EDS analyses. It showed good activity and high selectivity towards CO and H2, produced in a ratio suitable for Fisher–Tropsch applications. The effect of spatial velocity (GHSV) has been investigated; ramping temperature up and down, some hystersis has been evidenced, especially at the highest GHSV, mainly caused by thermal effects. Overall, 100% conversion of methane to H2 and CO in the appropriate syngas ratio (2/1) can be easily and stably achieved.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Methane; Partial oxidation; Catalytic; Platinum; Ruthenium; Bimetallic; Syngas; Hysteresis; Activity
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Partial oxidation of methane over Pt–Ru bimetallic catalyst for syngas production
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 348, Issue 2, 15 October 2008, Pages 221–228
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