fulltext.study @t Gmail

Hydrogen production by water–gas shift reaction over bimetallic Cu–Ni catalysts supported on La-doped mesoporous ceria

Paper ID Volume ID Publish Year Pages File Format Full-Text
41789 45900 2010 8 PDF Available
Title
Hydrogen production by water–gas shift reaction over bimetallic Cu–Ni catalysts supported on La-doped mesoporous ceria
Abstract

Water–gas shift reaction was investigated over a series of Ni, Cu and Cu–Ni bimetallic catalysts supported on La-doped mesoporous ceria. The catalysts were characterized by powder X-ray diffraction (XRD), high-temperature XRD (HTXRD), transmission electron microscopy (TEM), N2 adsorption analysis, and H2 temperature-programmed reduction (TPR). Combined results of powder XRD, HTXRD and TPR studies provided evidence of the formation of CuNi alloys in the CuNi/CeLaOx bimetallic catalysts. The catalytic activity of supported Cu–Ni catalysts was evaluated in the water–gas shift (WGS) reaction at 150–400 °C. The effects of the Cu/Ni ratio on the physicochemical properties and the catalytic performance were examined. The presence of copper in bimetallic catalysts resulted in suppression of undesirable methanation side-reaction, while the Ni component was important for high WGS activity. These findings strongly suggested that the bimetallic Cu–Ni compositions are highly promising as WGS catalysts.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (65 K)Download as PowerPoint slideResearch highlights▶ The WGS reaction was investigated for supported Cu, Ni and bimetallic Cu–Ni catalysts at 150–400 °C. ▶ Cu prevented Ni from sintering due to strong metal–metal interactions in the CuNi system ▶ Cu4Ni16 catalyst showed high WGS activity and strong inhibition of methane formation.

Keywords
Water–gas shift; Bimetallic catalysts; CuNi alloys; Temperature-programmed reduction; High-temperature XRD
First Page Preview
Hydrogen production by water–gas shift reaction over bimetallic Cu–Ni catalysts supported on La-doped mesoporous ceria
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 387, Issues 1–2, 20 October 2010, Pages 87–94
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