Please use this identifier to cite or link to this item:

Title: Porto Santo clays as environmentally friendly catalysts for the conversion of renewable terpene feedstocks. Limonene to p-cymene, an example
Authors: Catrinescu, C.
Fernandes, C.
Castilho, P.
Breen, C.
Carrott, M.
Editors: Macoveanu, Matei
Keywords: Chemistry
Issue Date: 2006
Publisher: Gh. Asachi
Citation: Environmental Engineering & Management Journal, 5 (2006) 274-285
Abstract: A bentonite collected at Serra de Dentro, Porto Santo Island, Portugal was selected as the starting material for the preparation of ion-exchanged clay catalysts. The pristine clay was characterized in terms of chemical composition (XRF), structure (XRD an FTIR spectroscopy), textural properties (nitrogen adsorption), acidity (TG of cyclohexylamine saturated samples) and catalytic activity (limonene conversion). Results show that clays exchanged with acidic cations (Al3+, Ni2+) are very active in limonene conversion, but the selectivity for p-cymene is low ( 15 %). In contrast, over the Na+-exchanged form, the reaction is slower but the selectivity to p-cymene is significantly increased (around 35 %). The inherent dehydrogenation activity of the SD clay could be considered responsible for this process.
ISSN: 1582-9596
Type: article
Appears in Collections:CQE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

Files in This Item:

File Description SizeFormat
EEMJ_5(2006)274-285.pdf2.85 MBAdobe PDFView/OpenRestrict Access. You can Request a copy!
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Dspace Dspace
DSpace Software, version 1.6.2 Copyright © 2002-2008 MIT and Hewlett-Packard - Feedback
UEvora B-On Curriculum DeGois