Determination of the spatial location of coke in catalysts by a novel NMR approach

Navin Gopinathan; Sean Rigby; Malcolm Greaves; J Lowe; J Wood; L L Dong; P Fantazzini; V Bortolotti; J Karger; P Galvosas

doi:10.1063/1.3562240

Determination of the spatial location of coke in catalysts by a novel NMR approach

Navin Gopinathan, Sean Rigby, Malcolm Greaves, J Lowe, J Wood, L L Dong, P Fantazzini (Editor), V Bortolotti (Editor), J Karger (Editor), P Galvosas (Editor)

Department of Chemical Engineering

Research output: Contribution to conference › Paper

Abstract

In this work, a liquid-liquid exchange (LLE) process within nanoporous heterogeneous catalysts has been followed using NMR relaxometry. Under so-called 'metered' supply conditions, when a high affinity liquid (water) displaced a low affinity liquid (cyclohexane) from a nanoporous sol-gel silica, entrapment of the low affinity liquid was observed which was similar to that observed in mercury porosimetry. In a similar experiment, comparing LLE in fresh and coked samples of bimodal Pt-alumina catalyst pellets, it was found that, while for the fresh sample water initially displaced cyclohexane from the smallest pores, as expected under metered conditions, this did not occur for coked catalysts.

Original language	English
Pages	89-92
Number of pages	4
DOIs	https://doi.org/10.1063/1.3562240
Publication status	Published - Mar 2011
Event	10th International Bologna Conference on Magnetic Resonance in Porous Media - Leipzig, Germany Duration: 12 Sep 2010 → 16 Sep 2010

Conference

Conference	10th International Bologna Conference on Magnetic Resonance in Porous Media
Country	Germany
City	Leipzig
Period	12/09/10 → 16/09/10

Keywords

percolation
phase transitions
porous materials
structure of

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10.1063/1.3562240

http://dx.doi.org/10.1063/1.3562240

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Gopinathan, N., Rigby, S., Greaves, M., Lowe, J., Wood, J., Dong, L. L., Fantazzini, P. (Ed.), Bortolotti, V. (Ed.), Karger, J. (Ed.), & Galvosas, P. (Ed.) (2011). Determination of the spatial location of coke in catalysts by a novel NMR approach. 89-92. Paper presented at 10th International Bologna Conference on Magnetic Resonance in Porous Media, Leipzig, Germany. https://doi.org/10.1063/1.3562240

Determination of the spatial location of coke in catalysts by a novel NMR approach. / Gopinathan, Navin; Rigby, Sean; Greaves, Malcolm; Lowe, J; Wood, J; Dong, L L; Fantazzini, P (Editor); Bortolotti, V (Editor); Karger, J (Editor); Galvosas, P (Editor).

2011. 89-92 Paper presented at 10th International Bologna Conference on Magnetic Resonance in Porous Media, Leipzig, Germany.

Research output: Contribution to conference › Paper

Gopinathan, N, Rigby, S, Greaves, M, Lowe, J, Wood, J, Dong, LL, Fantazzini, P (ed.), Bortolotti, V (ed.), Karger, J (ed.) & Galvosas, P (ed.) 2011, 'Determination of the spatial location of coke in catalysts by a novel NMR approach', Paper presented at 10th International Bologna Conference on Magnetic Resonance in Porous Media, Leipzig, Germany, 12/09/10 - 16/09/10 pp. 89-92. https://doi.org/10.1063/1.3562240

Gopinathan, Navin ; Rigby, Sean ; Greaves, Malcolm ; Lowe, J ; Wood, J ; Dong, L L ; Fantazzini, P (Editor) ; Bortolotti, V (Editor) ; Karger, J (Editor) ; Galvosas, P (Editor). / Determination of the spatial location of coke in catalysts by a novel NMR approach. Paper presented at 10th International Bologna Conference on Magnetic Resonance in Porous Media, Leipzig, Germany.4 p.

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