fulltext.study @t Gmail

Influence of support acidity of NiMoS catalysts in the activity for hydrogenation and hydrocracking of tetralin

Paper ID Volume ID Publish Year Pages File Format Full-Text
41934 45905 2010 7 PDF Available
Title
Influence of support acidity of NiMoS catalysts in the activity for hydrogenation and hydrocracking of tetralin
Abstract

Three NiMo sulfided catalysts with the same active phase content and deposited on different supports (alumina, silica–alumina and alumina-Y zeolite) were prepared aiming to obtain bifunctional catalysts with different acidities and good dispersion of the sulfide phase for analyzing the role of the support acidity on the hydrogenation and hydrocracking activities for the conversion of tetralin. Support acidity promotes the ring opening of tetralin, increasing the yields of aromatic compounds among the reaction products of silica–alumina and alumina-Y zeolite supported catalysts. However, these catalysts also presented high activities for both ring opening/cracking and hydrogenation reactions, respectively associated to the support and to sulfided metal phase, as compared to alumina supported one, which presented essentially hydrogenated products. Although the hydrogenation activity of sulfided catalysts can be modified by neighboring acid sites, the complex reaction network for the tetralin conversion, involving series and parallel steps on both acid and hydrogenation sites, has to be taken in account for explaining the present results.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (111 K)Download as PowerPoint slideResearch highlights▶ NiMoS with similar dispersion prepared on Al2O3, SiO2–Al2O3 and Al2O3-Y zeolite. ▶ Tetralin ring opening and cracking is favored on NiMoS/Al2O3-Y zeolite. ▶ Support acidity also promotes hydrogenation activities. ▶ Electronic effect or alternative reaction pathway over acidic supports are proposed.

Keywords
Tetralin; Hydrogenation; Hydroconversion; Ring opening; Acidity
First Page Preview
Influence of support acidity of NiMoS catalysts in the activity for hydrogenation and hydrocracking of tetralin
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 384, Issues 1–2, 20 August 2010, Pages 51–57
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