fulltext.study @t Gmail

Highly active and stable Co/La0.7Sr0.3AlO3−δ catalyst for steam reforming of toluene

Paper ID Volume ID Publish Year Pages File Format Full-Text
53793 46984 2016 7 PDF Available
Title
Highly active and stable Co/La0.7Sr0.3AlO3−δ catalyst for steam reforming of toluene
Abstract

•Steam reforming of toluene as a model compound of aromatic hydrocarbons was investigated.•Co/La0.7Sr0.3AlO3−δ perovskite catalyst showed high and stable activity.•The rate-determining step changed at around 848 K relating reaction intermediate desorption.•Fast reaction and desorption of absorbed intermediates enable high catalytic activity and stability.

We investigated steam reforming of toluene as a model compound of aromatic hydrocarbons included in biomass tar over Co supported La0.7Sr0.3AlO3−δ (LSAO), perovskite oxide. Ni-supported LSAO catalyst has shown high activity and coke resistance from the redox property of lattice oxygen in/on the LSAO support. Co is known as an active metal for this reaction, so Co/LSAO catalyst was investigated in this work. Co/LSAO catalyst, which showed high steady-state activity and stability, was characterized using H218O isotopic transient response tests, STEM, FT-IR, Arrhenius plot and partial pressure dependence to elucidate high and stable catalytic activity. In situ FT-IR measurements revealed that reaction intermediates on Co/LSAO desorbed at 873 K or lower temperatures. Although redox property of lattice oxygen did not change at around 848 K based on isotopic transient tests, the Arrhenius plots indicate that the rate-determining step changed at around 848 K because of reaction intermediate decomposition desorption. Fast reaction and desorption of absorbed intermediates on Co/LSAO enable catalytic stability during toluene steam reforming.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (182 K)Download as PowerPoint slide

Keywords
Perovskite oxide; Steam reforming of toluene; Co catalyst; Hydrogen production; Surficial adsorption property; Stable catalytic activity
First Page Preview
Highly active and stable Co/La0.7Sr0.3AlO3−δ catalyst for steam reforming of toluene
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: Catalysis Today - Volume 265, 1 May 2016, Pages 111–117
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