fulltext.study @t Gmail

Dry reforming of methane in a stagnation-flow reactor using Rh supported on strontium-substituted hexaaluminate

Paper ID Volume ID Publish Year Pages File Format Full-Text
41488 45890 2011 9 PDF Available
Title
Dry reforming of methane in a stagnation-flow reactor using Rh supported on strontium-substituted hexaaluminate
Abstract

A combination of experiment and modeling is used to investigate catalytic reforming of methane with carbon dioxide (dry reforming) in a stagnation-flow reactor. The catalyst surface is a porous washcoat of rhodium supported on strontium-substituted hexaaluminate. The stagnation-flow configuration enables microprobe sampling of the compositional boundary layer adjacent to the catalyst surface. This configuration also enables efficient modeling the heterogeneous chemistry, coupled with convective and diffusive transport within the gas-phase boundary layer. The measurements provide new data that assist the fundamental understanding of methane dry reforming. The modeling incorporates an elementary reaction mechanism that was developed initially to represent catalytic partial oxidation and steam reforming. Representing the new dry-reforming measurements required modification of reaction rates for CO2 and CH4 interactions on the catalyst surface.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (152 K)Download as PowerPoint slideResearch highlights▶ Stagnation-flow reactor provides new experimental data to assist in extending previously published reaction mechanisms to a greater range of conditions. ▶ Effective modeling of dry reforming methane is most sensitive to three elementary reaction rates identified here. ▶ Reaction pathways show that the adsorbed HCO species is an important reaction step in modeling dry reforming of methane. ▶ In the present reaction pathway surface carbon is oxidized primarily by surface atomic oxygen from HCO*.

Keywords
Methane; Dry reforming; Rhodium; Hexaaluminate; Stagnation flow; Modeling
First Page Preview
Dry reforming of methane in a stagnation-flow reactor using Rh supported on strontium-substituted hexaaluminate
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 394, Issues 1–2, 28 February 2011, Pages 257–265
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