fulltext.study @t Gmail

Characterization and catalytic performance of ruthenium sulfide catalysts supported on H-BEA, Na– and Cs–H-BEA zeolites

Paper ID Volume ID Publish Year Pages File Format Full-Text
43252 45960 2008 9 PDF Available
Title
Characterization and catalytic performance of ruthenium sulfide catalysts supported on H-BEA, Na– and Cs–H-BEA zeolites
Abstract

A series of Ru-X-H-BEA (X = H+, Na+, Cs+) catalysts sulfided at high temperature in H2S (15%)/N2 was characterized and tested in thiophene hydrodesulfurization (HDS) to analyze the effect of zeolite acidity and nature of the alkaline cation on the acid properties, stability of the sulfided phase and HDS catalytic activity. It is shown that after exchange of half of the zeolite protons by alkaline cations (Cs+, Na+) the acid properties of the zeolite are influenced by the nature of the cation suggesting the presence of a remote effect of the alkaline cation over the remaining sites and/or the disappearance of the most acidic sites. The activity of the catalysts and the product distribution in the HDS of thiophene are also influenced by the nature of the exchanged cation. Temperature-programmed reduction of the sulfided catalysts before and after thiophene HDS showed that a sulfided phase with low S/Ru ratio is obtained inside the zeolite channels.

Graphical abstractThe behavior of Ru hydrodesulfurization (HDS) catalysts supported on a series of X-H-BEA (X = H+, Na+, Cs+) zeolites was studied. The catalysts tested in the thiophene HDS reaction to analyze the effect of zeolite acidity and nature of the alkaline cation on the acid properties, stability of the sulfided phase and HDS activity. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
H-BEA; Na–H-BEA; Cs–H-BEA; RuS2; Acid characterization; TPR-S; Thiophene HDS; Cumene cracking
First Page Preview
Characterization and catalytic performance of ruthenium sulfide catalysts supported on H-BEA, Na– and Cs–H-BEA zeolites
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 343, Issues 1–2, 1 July 2008, Pages 1–9
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