fulltext.study @t Gmail

Structure and activity of Ni/La0.7Sr0.3AlO3−δ catalyst for hydrogen production by steam reforming of toluene

Paper ID Volume ID Publish Year Pages File Format Full-Text
40108 45844 2013 9 PDF Available
Title
Structure and activity of Ni/La0.7Sr0.3AlO3−δ catalyst for hydrogen production by steam reforming of toluene
Abstract

•Hydrogen production by catalytic toluene steam reforming was investigated.•Ni/La0.7Sr0.3AlO3−δ showed high catalytic activity and coke resistance for the reaction.•Ni/La0.7Sr0.3AlO3−δ catalysts calcined at various temperatures were compared.•Interaction between lattice oxygen and Ni particle was important for coke suppression.•Lattice oxygen mobility was affected by the perimeter of Ni particle.

We investigated catalytic steam reforming of aromatic hydrocarbon using toluene as a model compound. Ni/La0.7Sr0.3AlO3−δ catalyst showed high catalytic activity and low coke formation. Although the lattice oxygen in a perovskite-type support plays an important role for oxidizing CHx and coke precursor, the role of interaction between Ni and the support has not been clarified. In this study, Ni/La0.7Sr0.3AlO3−δ catalyst calcined at various temperatures (1073, 1173, 1273 and 1373 K) was prepared and used to elucidate the effect of Ni particle size on the lattice oxygen mobility. The Ni particle size increased concomitantly with increased calcination temperature, and the C1 yield decreased from 72.9 to 15.5%. Enhancement of lattice oxygen mobility by the decrease of Ni particle size was observed by transient response tests using H218O over Ni/La0.7Sr0.3AlO3−δ calcined at various temperatures. The interface between Ni and perovskite support played an important role for oxidizing coke precursor by lattice oxygen.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (226 K)Download as PowerPoint slide

Keywords
Steam reforming of toluene; Ni catalyst; Perovskite-type oxide support; Lattice oxygen mobility
First Page Preview
Structure and activity of Ni/La0.7Sr0.3AlO3−δ catalyst for hydrogen production by 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: Applied Catalysis A: General - Volumes 464–465, 15 August 2013, Pages 78–86
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