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A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts

J. Ihli, R. R. Jacob, M. Holler, M. Guizar-Sicairos, A. Diaz, J. C. da Silva, D. Ferreira Sanchez, F. Krumeich, D. Grolimund, M. Taddei, W. -C. Cheng, Y. Shu, A. Menzel, J. A. van Bokhoven, Marco Taddei Orcid Logo

Nature Communications, Volume: 8, Issue: 1

Swansea University Author: Marco Taddei Orcid Logo

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DOI (Published version): 10.1038/s41467-017-00789-w

Abstract

Since its commercial introduction three-quarters of a century ago, fluid catalytic cracking has been one of the most important conversion processes in the petroleum industry. In this process, porous composites composed of zeolite and clay crack the heavy fractions in crude oil into transportation fu...

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Published in: Nature Communications
ISSN: 2041-1723
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa36835
first_indexed 2017-11-20T14:26:06Z
last_indexed 2018-02-09T05:29:34Z
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spelling 2017-12-11T10:55:35.8894693 v2 36835 2017-11-20 A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts 5cffd1038508554d8596dee8b4e51052 0000-0003-2805-6375 Marco Taddei Marco Taddei true false 2017-11-20 Since its commercial introduction three-quarters of a century ago, fluid catalytic cracking has been one of the most important conversion processes in the petroleum industry. In this process, porous composites composed of zeolite and clay crack the heavy fractions in crude oil into transportation fuel and petrochemical feedstocks. Yet, over time the catalytic activity of these composite particles decreases. Here, we report on ptychographic tomography, diffraction, and fluorescence tomography, as well as electron microscopy measurements, which elucidate the structural changes that lead to catalyst deactivation. In combination, these measurements reveal zeolite amorphization and distinct structural changes on the particle exterior as the driving forces behind catalyst deactivation. Amorphization of zeolites, in particular, close to the particle exterior, results in a reduction of catalytic capacity. A concretion of the outermost particle layer into a dense amorphous silica–alumina shell further reduces the mass transport to the active sites within the composite. Journal Article Nature Communications 8 1 2041-1723 Heterogeneous catalysis, Phase-contrast microscopy, Porous materials 9 10 2017 2017-10-09 10.1038/s41467-017-00789-w COLLEGE NANME COLLEGE CODE Swansea University 2017-12-11T10:55:35.8894693 2017-11-20T11:16:21.2826042 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised J. Ihli 1 R. R. Jacob 2 M. Holler 3 M. Guizar-Sicairos 4 A. Diaz 5 J. C. da Silva 6 D. Ferreira Sanchez 7 F. Krumeich 8 D. Grolimund 9 M. Taddei 10 W. -C. Cheng 11 Y. Shu 12 A. Menzel 13 J. A. van Bokhoven 14 Marco Taddei 0000-0003-2805-6375 15 0036835-11122017105526.pdf ihli2017.pdf 2017-12-11T10:55:26.8270000 Output 7365779 application/pdf Version of Record true 2017-12-11T00:00:00.0000000 false eng
title A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts
spellingShingle A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts
Marco Taddei
title_short A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts
title_full A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts
title_fullStr A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts
title_full_unstemmed A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts
title_sort A three-dimensional view of structural changes caused by deactivation of fluid catalytic cracking catalysts
author_id_str_mv 5cffd1038508554d8596dee8b4e51052
author_id_fullname_str_mv 5cffd1038508554d8596dee8b4e51052_***_Marco Taddei
author Marco Taddei
author2 J. Ihli
R. R. Jacob
M. Holler
M. Guizar-Sicairos
A. Diaz
J. C. da Silva
D. Ferreira Sanchez
F. Krumeich
D. Grolimund
M. Taddei
W. -C. Cheng
Y. Shu
A. Menzel
J. A. van Bokhoven
Marco Taddei
format Journal article
container_title Nature Communications
container_volume 8
container_issue 1
publishDate 2017
institution Swansea University
issn 2041-1723
doi_str_mv 10.1038/s41467-017-00789-w
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description Since its commercial introduction three-quarters of a century ago, fluid catalytic cracking has been one of the most important conversion processes in the petroleum industry. In this process, porous composites composed of zeolite and clay crack the heavy fractions in crude oil into transportation fuel and petrochemical feedstocks. Yet, over time the catalytic activity of these composite particles decreases. Here, we report on ptychographic tomography, diffraction, and fluorescence tomography, as well as electron microscopy measurements, which elucidate the structural changes that lead to catalyst deactivation. In combination, these measurements reveal zeolite amorphization and distinct structural changes on the particle exterior as the driving forces behind catalyst deactivation. Amorphization of zeolites, in particular, close to the particle exterior, results in a reduction of catalytic capacity. A concretion of the outermost particle layer into a dense amorphous silica–alumina shell further reduces the mass transport to the active sites within the composite.
published_date 2017-10-09T13:22:35Z
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score 11.247077

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