fulltext.study @t Gmail

Catalytic performance of manganese cobalt oxides on methane combustion at low temperature

Paper ID Volume ID Publish Year Pages File Format Full-Text
47967 46486 2009 6 PDF Available
Title
Catalytic performance of manganese cobalt oxides on methane combustion at low temperature
Abstract

Manganese cobalt oxides with different Co/Mn ratios have been prepared by co-precipitation methods, and their catalytic performance on methane combustion were evaluated from 250 °C to 400 °C at a space velocity of 36,000 h−1. A significant improvement of activity was observed over Co5Mn1 catalysts with a Co/Mn molar ratio of 5:1, and the catalytic activity reached 90% of methane conversion at 320 °C. Oxygen mobility – reflected by the appearance of O2− – was probably a key factor that influenced the oxidation rate of methane below 320 °C. The doping of manganese into the spinel structure of cobalt oxide increased crystal defections, which probably caused the increase of the amount of octahedrally coordinated divalent cobalt cations that are responsible for catalytic activity. The hydroxyl groups observed on the manganese-doped catalysts would also explain the promotional effects.

Keywords
Methane combustion; Cobalt; Manganese; Spinel; Promotional effect; Crystal defections
First Page Preview
Catalytic performance of manganese cobalt oxides on methane combustion at low temperature
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 B: Environmental - Volume 90, Issues 1–2, 25 July 2009, Pages 307–312
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