NDLI: Large Ferrierite Crystals as Models for Catalyst Deactivation during Skeletal Isomerisation of Oleic Acid: Evidence for Pore Mouth Catalysis

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Large Ferrierite Crystals as Models for Catalyst Deactivation during Skeletal Isomerisation of Oleic Acid: Evidence for Pore Mouth Catalysis

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Large Ferrierite Crystals as Models for Catalyst Deactivation during Skeletal Isomerisation of Oleic Acid: Evidence for Pore Mouth Catalysis

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wiedemann, Sophie C. C. Kärger, Jörg Weitkamp, Jens Ristanovic, Zoran Reddy Marthala, V. R. Wels, Bas Weckhuysen, Bert M. Bruijnincx, Pieter C. A. Whiting, Gareth T.
Description	Author Affiliation: Wiedemann SC ( Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht (The Netherlands).); Ristanovic Z ( Croda Nederland B.V., Buurtje 1, 2800 BE Gouda (The Netherlands).); Whiting GT ( Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht (The Netherlands).); Reddy Marthala VR ( Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht (The Netherlands).); Kärger J ( Institute of Chemical Technology, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart (Germany).); Weitkamp J ( Department of Interface Physics, University of Leipzig, Linnéstrasse 5, 04103 Leipzig (Germany).); Wels B ( Institute of Chemical Technology, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart (Germany).); Bruijnincx PC ( Croda Nederland B.V., Buurtje 1, 2800 BE Gouda (The Netherlands).); Weckhuysen BM ( Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht (The Netherlands).)
Abstract	Large zeolite crystals of ferrierite have been used to study the deactivation, at the single particle level, of the alkyl isomerisation catalysis of oleic acid and elaidic acid by a combination of visible micro-spectroscopy and fluorescence microscopy (both polarised wide-field and confocal modes). The large crystals did show the desired activity, albeit only traces of the isomerisation product were obtained and low conversions were achieved compared to commercial ferrierite powders. This limited activity is in line with their lower external non-basal surface area, supporting the hypothesis of pore mouth catalysis. Further evidence for the latter comes from visible micro-spectroscopy, which shows that the accumulation of aromatic species is limited to the crystal edges, while fluorescence microscopy strongly suggests the presence of polyenylic carbocations. Light polarisation associated with the spatial resolution of fluorescence microscopy reveals that these carbonaceous deposits are aligned only in the larger 10-MR channels of ferrierite at all crystal edges. The reaction is hence further limited to these specific pore mouths.
ISSN	09476539
e-ISSN	15213765
Journal	Chemistry - A European Journal
Issue Number	1
Volume Number	22
Language	English
Publisher	Wiley-VCH;ChemPubSoc Europe
Publisher Date	2016-01-04
Publisher Place	Germany
Access Restriction	Open
Subject Keyword	Mouth Chemistry Oleic Acid Zeolites Catalysis Isomerism Microscopy, Fluorescence Chemical Synthesis Research Support, Non-U.S. Gov't
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Catalysis

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