fulltext.study @t Gmail

Structural and surface features of PtNi catalysts for reforming of methane with CO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
43622 45979 2007 14 PDF Available
Title
Structural and surface features of PtNi catalysts for reforming of methane with CO2
Abstract

The effect of Ni content (1–12 wt%) on the surface and catalytic behavior of bimetallic PtNi catalysts supported on ZSM-5 for reforming of methane with CO2 was studied. The properties of the catalysts, before and after exposure to reaction conditions, were investigated employing N2 adsorption–desorption isotherms, XRD, TGA/DTA, FTIR spectroscopy of framework vibrations, DRIFT spectroscopy of adsorbed CO, XPS and TPR. It was shown that addition of a small amount of Pt (0.5%) to Ni catalyst leads to formation of small nano-sized NiO particles and easy reduction of NiO. It was found that the amount of Ni precursor plays an important role on the surface and catalytic properties of bimetallic catalysts. The improvement of catalytic activity and stability observed for bimetallic catalyst was attributed to an increase of the nickel metallic dispersion caused by an intimate contact between nickel and platinum at Ni-loading of 6 wt%.

Graphical abstractThe surface and catalytic properties of bimetallic PtNi catalysts supported on ZSM-5 in the reaction of methane reforming with CO2 was studied. It was shown that the presence of a small amount of Pt (0.3–0.5 wt%) in bimetallic PtNi catalysts affects the surface and catalytic performances towards the CO2 reforming of methane. Addition of Pt leads to easy reduction of nickel oxide species and a better dispersion of nickel metal particles at ≤6 wt% Ni due to the contact between nickel and platinum. The latter is revealed by the higher stability of the catalysts as it is shown in the figure. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Dry reforming; Bimetallic catalysts; Nickel; Platinum; Coke; Characterization
First Page Preview
Structural and surface features of PtNi catalysts for reforming of methane with CO2
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 323, 30 April 2007, Pages 188–201
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