fulltext.study @t Gmail

Controlled atmosphere 13C and 1H MAS NMR study of reforming route of methane with carbon dioxide over Rh/SBA-15

Paper ID Volume ID Publish Year Pages File Format Full-Text
41566 45893 2011 5 PDF Available
Title
Controlled atmosphere 13C and 1H MAS NMR study of reforming route of methane with carbon dioxide over Rh/SBA-15
Abstract

The mechanism of methane reforming with carbon dioxide over 1.0 wt.% Rh/SBA-15 catalyst has been studied by the 13C and 1H magic-angle spinning (MAS) NMR spectroscopies under controlled atmosphere condition using 13CH4 + 12CO2 and 12CH4 + 13CO2 as reactants. The effect of temperature in the region of 298–1023 K on the reaction was investigated and the contents of various 13C and 1H species were obtained quantitatively by the NMR technique. When treated at 573 K, the carbon exchange between methane and carbon dioxide can be observed. With the temperature rising to 773 K, the adsorbed CH3O* species is formed but no reforming reaction occurs. In the high temperature range of 873–1023 K, the reforming reaction was observed with concomitant appearance of the adsorbed CH2O* species and the intensity of both CH3O* and CH2O* increases with increasing temperature, indicating that the decomposition of CH3O* to CH2O* occurs and the products of dry reforming are formed from decomposition of the adsorbed CH2O* species.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (137 K)Download as PowerPoint slideHighlights► CH4 reforming with CO2 over Rh/SBA-15 was studied by 13C and 1H MAS NMR. ► Isotopic scrambling and dry reforming reaction were observed by 13C MAS NMR. ► CH3O* and CH2O* species were found by 1H MAS NMR. ► Three crucial steps in the reforming route were found.

Keywords
Methane; Carbon dioxide; Dry reforming; Rh/SBA-15; MAS NMR
First Page Preview
Controlled atmosphere 13C and 1H MAS NMR study of reforming route of methane with carbon dioxide over Rh/SBA-15
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 401, Issues 1–2, 15 July 2011, Pages 114–118
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