fulltext.study @t Gmail

Effects of MoO3 loading and calcination temperature on the activity of the sulphur-resistant methanation catalyst MoO3/γ-Al2O3

Paper ID Volume ID Publish Year Pages File Format Full-Text
40803 45866 2012 7 PDF Available
Title
Effects of MoO3 loading and calcination temperature on the activity of the sulphur-resistant methanation catalyst MoO3/γ-Al2O3
Abstract

The effects of calcination temperature and MoO3 loading on the syngas methanation performance of MoO3/γ-Al2O3 catalyst prepared by the incipient-wetness impregnation method were studied. Mo–Al/25 catalyst (∼4.04 Mo/nm2) calcined at 600 °C reached maximum activity with 46.45% CO conversion. All of the experimental results demonstrated that the saturated monolayer coverage of MoO3 over a γ-Al2O3 support was closet to 25 wt.% MoO3. It was discovered that tetrahedrally coordinated Mo6+ (T), instead of octahedrally coordinated Mo6+ (O), is the active catalytic precursor in its oxidised state. Additionally, it was also confirmed that the presence of crystalline MoO3 and Al2(MoO4)3 species depended on not only the MoO3 loading but also the calcination temperature.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (145 K)Download as PowerPoint slideHighlights► The catalysts for syngas methanation were studied in the feed containing H2S. ► Mo–Al/25 catalyst calcined at 600 °C had the greatest surface and highest activity. ► The saturated monolayer coverage was proved to be closet to 25 wt.% MoO3. ► Octahedrally coordinated Mo6+ (O) species was not the active catalytic precursor.

Keywords
Synthetic natural gas; Methanation; Alumina; MoO3 loading; Calcination temperature
First Page Preview
Effects of MoO3 loading and calcination temperature on the activity of the sulphur-resistant methanation catalyst MoO3/γ-Al2O3
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 - Volumes 431–432, 26 July 2012, Pages 144–150
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