Pulsed-field gradient nuclear magnetic resonance study of transport properties of fluid catalytic cracking catalysts

Kortunov, P; Vasenkov, S; Karger, J; Elia, MF; Perez, M; Stocker, M; Papadopoulos, GK; Theodorou, D; Drescher, B; McElhiney, G; Bernauer, B; Krystl, V; Kocirik, M; Zikanova, A; Jirglova, H; Berger, C; Glaser, R; Weitkamp, J; Hansen, EW

dc.contributor.author	Kortunov, P	en
dc.contributor.author	Vasenkov, S	en
dc.contributor.author	Karger, J	en
dc.contributor.author	Elia, MF	en
dc.contributor.author	Perez, M	en
dc.contributor.author	Stocker, M	en
dc.contributor.author	Papadopoulos, GK	en
dc.contributor.author	Theodorou, D	en
dc.contributor.author	Drescher, B	en
dc.contributor.author	McElhiney, G	en
dc.contributor.author	Bernauer, B	en
dc.contributor.author	Krystl, V	en
dc.contributor.author	Kocirik, M	en
dc.contributor.author	Zikanova, A	en
dc.contributor.author	Jirglova, H	en
dc.contributor.author	Berger, C	en
dc.contributor.author	Glaser, R	en
dc.contributor.author	Weitkamp, J	en
dc.contributor.author	Hansen, EW	en
dc.date.accessioned	2014-03-01T02:43:29Z
dc.date.available	2014-03-01T02:43:29Z
dc.date.issued	2005	en
dc.identifier.issn	0730-725X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/31433
dc.subject	Fluid catalytic cracking catalyst	en
dc.subject	Nuclear magnetic resonance	en
dc.subject	Pulsed-field gradient	en
dc.subject.classification	Radiology, Nuclear Medicine & Medical Imaging	en
dc.subject.other	zeolite	en
dc.subject.other	catalysis	en
dc.subject.other	catalyst	en
dc.subject.other	comparative study	en
dc.subject.other	conference paper	en
dc.subject.other	crystal	en
dc.subject.other	diffusion	en
dc.subject.other	fluid transport	en
dc.subject.other	industry	en
dc.subject.other	molecule	en
dc.subject.other	nuclear magnetic resonance	en
dc.subject.other	particle size	en
dc.subject.other	physical chemistry	en
dc.subject.other	priority journal	en
dc.subject.other	pulsed field gel electrophoresis	en
dc.subject.other	temperature	en
dc.subject.other	Catalysis	en
dc.subject.other	Diffusion	en
dc.subject.other	Magnetic Resonance Spectroscopy	en
dc.subject.other	Particle Size	en
dc.subject.other	Porosity	en
dc.subject.other	Zeolites	en
dc.title	Pulsed-field gradient nuclear magnetic resonance study of transport properties of fluid catalytic cracking catalysts	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/j.mri.2004.11.016	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.mri.2004.11.016	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	Pulsed-field gradient nuclear magnetic resonance (PFG NMR) has been applied to study molecular diffusion in industrial fluid catalytic cracking (FCC) catalysts and in USY zeolite for a broad range of molecular displacements and temperatures. The results of this study have been used to elucidate the relevance of molecular transport on various displacements for the rate of molecular exchange between catalyst particles and their surroundings. It turned out that this rate, which may determine the overall rate and selectivity of FCC process, is primarily related to the diffusion mode associated with displacements larger than the size of zeolite crystals located in the particles but smaller than the size of the particles. This conclusion has been confirmed by comparative studies of the catalytic performance of different FCC catalysts. (c) 2005 Elsevier Inc. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE INC	en
heal.journalName	Magnetic Resonance Imaging	en
dc.identifier.doi	10.1016/j.mri.2004.11.016	en
dc.identifier.isi	ISI:000228658400018	en
dc.identifier.volume	23	en
dc.identifier.issue	2 SPEC. ISS.	en
dc.identifier.spage	233	en
dc.identifier.epage	237	en