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

Kortunov, P.; Vasenkov, S.; Kärger, J.; Fé Elía, M.; Perez, M.; Stöcker, M.; Papadopoulos, G. K.; Theodorou, D.; Drescher, B.; McElhiney, G.; Bernauer, B.; Krystl, V.; Kočiřík, Milan; Zikánová, Arlette; Jirglová, Hana; Berger, C.; Gläser, R.; Weitkamp, J.; Hansen, E. W.

Number of the records: 1

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

1.

SYSNO ASEP	0000667
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Pulsed-field gradient nuclear magnetic resonance study of transport properties of fluid catalytic cracking catalysts
Title	Studium transportních vlastností katalyzátorů pro fluidní katalytické krakování pomocí nukleární magnetické rezonance s gradientovým pulzním polem
Author(s)	Kortunov, P. (DE) Vasenkov, S. (DE) Kärger, J. (DE) Fé Elía, M. (ES) Perez, M. (ES) Stöcker, M. (NO) Papadopoulos, G. K. (GR) Theodorou, D. (GR) Drescher, B. (DE) McElhiney, G. (DE) Bernauer, B. (CZ) Krystl, V. (CZ) Kočiřík, Milan (UFCH-W)_{RID, ORCID} Zikánová, Arlette (UFCH-W)_RID Jirglová, Hana (UFCH-W)_{RID, ORCID} Berger, C. (DE) Gläser, R. (DE) Weitkamp, J. (DE) Hansen, E. W. (NO)
Source Title	Magnetic Resonance Imaging. - : Elsevier - ISSN 0730-725X Roč. 23, č. 2 (2005), s. 233-237
Number of pages	5 s.
Language	eng - English
Country	US - United States
Keywords	pulsed-field gradient ; nuclear magnetic resonance ; fluid catalytic cracking catalyst
Subject RIV	CF - Physical ; Theoretical Chemistry
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
Annotation	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.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2006

Number of the records: 1