fulltext.study @t Gmail

From Al2O3-supported Ni(II)–ethylenediamine complexes to CO hydrogenation catalysts: Characterization of the surface sites and catalytic properties

Paper ID Volume ID Publish Year Pages File Format Full-Text
42684 45937 2009 6 PDF Available
Title
From Al2O3-supported Ni(II)–ethylenediamine complexes to CO hydrogenation catalysts: Characterization of the surface sites and catalytic properties
Abstract

Ni (15 wt%)/Al2O3 catalysts prepared by decomposition of supported Ni(II)–ethylenediamine complexes in inert atmosphere, followed by post-treatment in hydrogen, are able to catalyze carbon monoxide hydrogenation at temperatures lower than for a catalyst prepared from nickel nitrate and containing a fraction of surface nickel aluminate. Unlike the latter, the catalyst prepared from Ni(II)–en complexes exhibits mostly surface metallic sites and is more stable under reaction despite the absence of nickel aluminate. Deactivation occurs during the reaction, probably by carbon deposition, but less strongly than for an ex-nickel nitrate catalyst.

Graphical abstractCompared with Ni/Al2O3 catalysts prepared from nickel nitrate, characterized by a low metallic surface area exposed and by reduced sites connected with nickel aluminate, catalysts prepared by decomposition of Ni–ethylenediamine complexes exhibit mostly reduced metal particles and a high metallic surface area (13 m2 gcat−1). As a result, they appear as highly active toward CO hydrogenation.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Nickel; Alumina; Carbon monoxide; Hydrogenation; Methane; Deactivation
First Page Preview
From Al2O3-supported Ni(II)–ethylenediamine complexes to CO hydrogenation catalysts: Characterization of the surface sites and catalytic properties
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 362, Issues 1–2, 30 June 2009, Pages 34–39
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