Probing the influence of SSZ-13 Zeolite pore hierarchy in MTO catalysis by NASCA microscopy and positron emission profiling

X. Zhu, N. Kosinov, A.V. Kubarev, A. Bolshakov, B. Mezari, I. Valastyan, J.P. Hofmann, M.B.J. Roeffaers, E. Sarkadi-Pribóczki, E.J.M. Hensen

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)
4 Downloads (Pure)

Abstract

Understanding the role of the hierarchical pore architecture of SSZ-13 zeolites on catalytic performance in the Methanol-to-Olefins (MTO) reaction is crucial for guide the design of better catalysts. We investigated the influence of the space velocity on the perfor-mance of a microporous SSZ-13 zeolite, and several hierarchically structured SSZ-13 zeolites. Single catalytic turnovers, as recorded with fluorescence microscopy verified that the hierarchical zeolites contain pores larger than the 0.38 nm apertures native to SSZ-13 zeolite. The amount of fluorescent events correlated well with the additional pore volume available due to hierarchical structuring of the zeolite. Positron Emission Tomography (PET) using 11C-labelled methanol was used to map the 2D spatial distribution of the deposits formed during the MTO reaction in the catalyst bed. PET imaging demonstrates that hierarchical structuring not only improves the utilization of the available microporous cages of SSZ-13 but also that the aromatic hydrocarbon pool species are involved in more turnovers before they condense into larger multi-ring structures that deactivate the catalyst.
Original languageEnglish
Pages (from-to)3470-3477
Number of pages8
JournalChemCatChem
Volume9
Issue number18
DOIs
Publication statusPublished - 2017

Fingerprint

Zeolites
Alkenes
Positrons
zeolites
Catalysis
alkenes
Olefins
catalysis
hierarchies
Methanol
positrons
Microscopic examination
Positron emission tomography
methyl alcohol
microscopy
porosity
catalysts
Catalysts
tomography
Aromatic hydrocarbons

Cite this

@article{80e48ec09d9b4b399ddf3a017e808e7a,
title = "Probing the influence of SSZ-13 Zeolite pore hierarchy in MTO catalysis by NASCA microscopy and positron emission profiling",
abstract = "Understanding the role of the hierarchical pore architecture of SSZ-13 zeolites on catalytic performance in the Methanol-to-Olefins (MTO) reaction is crucial for guide the design of better catalysts. We investigated the influence of the space velocity on the perfor-mance of a microporous SSZ-13 zeolite, and several hierarchically structured SSZ-13 zeolites. Single catalytic turnovers, as recorded with fluorescence microscopy verified that the hierarchical zeolites contain pores larger than the 0.38 nm apertures native to SSZ-13 zeolite. The amount of fluorescent events correlated well with the additional pore volume available due to hierarchical structuring of the zeolite. Positron Emission Tomography (PET) using 11C-labelled methanol was used to map the 2D spatial distribution of the deposits formed during the MTO reaction in the catalyst bed. PET imaging demonstrates that hierarchical structuring not only improves the utilization of the available microporous cages of SSZ-13 but also that the aromatic hydrocarbon pool species are involved in more turnovers before they condense into larger multi-ring structures that deactivate the catalyst.",
author = "X. Zhu and N. Kosinov and A.V. Kubarev and A. Bolshakov and B. Mezari and I. Valastyan and J.P. Hofmann and M.B.J. Roeffaers and E. Sarkadi-Prib{\'o}czki and E.J.M. Hensen",
year = "2017",
doi = "10.1002/cctc.201700567",
language = "English",
volume = "9",
pages = "3470--3477",
journal = "ChemCatChem",
issn = "1867-3899",
publisher = "Wiley-VCH Verlag",
number = "18",

}

Probing the influence of SSZ-13 Zeolite pore hierarchy in MTO catalysis by NASCA microscopy and positron emission profiling. / Zhu, X.; Kosinov, N.; Kubarev, A.V.; Bolshakov, A.; Mezari, B.; Valastyan, I.; Hofmann, J.P.; Roeffaers, M.B.J.; Sarkadi-Pribóczki, E.; Hensen, E.J.M.

In: ChemCatChem, Vol. 9, No. 18, 2017, p. 3470-3477.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Probing the influence of SSZ-13 Zeolite pore hierarchy in MTO catalysis by NASCA microscopy and positron emission profiling

AU - Zhu, X.

AU - Kosinov, N.

AU - Kubarev, A.V.

AU - Bolshakov, A.

AU - Mezari, B.

AU - Valastyan, I.

AU - Hofmann, J.P.

AU - Roeffaers, M.B.J.

AU - Sarkadi-Pribóczki, E.

AU - Hensen, E.J.M.

PY - 2017

Y1 - 2017

N2 - Understanding the role of the hierarchical pore architecture of SSZ-13 zeolites on catalytic performance in the Methanol-to-Olefins (MTO) reaction is crucial for guide the design of better catalysts. We investigated the influence of the space velocity on the perfor-mance of a microporous SSZ-13 zeolite, and several hierarchically structured SSZ-13 zeolites. Single catalytic turnovers, as recorded with fluorescence microscopy verified that the hierarchical zeolites contain pores larger than the 0.38 nm apertures native to SSZ-13 zeolite. The amount of fluorescent events correlated well with the additional pore volume available due to hierarchical structuring of the zeolite. Positron Emission Tomography (PET) using 11C-labelled methanol was used to map the 2D spatial distribution of the deposits formed during the MTO reaction in the catalyst bed. PET imaging demonstrates that hierarchical structuring not only improves the utilization of the available microporous cages of SSZ-13 but also that the aromatic hydrocarbon pool species are involved in more turnovers before they condense into larger multi-ring structures that deactivate the catalyst.

AB - Understanding the role of the hierarchical pore architecture of SSZ-13 zeolites on catalytic performance in the Methanol-to-Olefins (MTO) reaction is crucial for guide the design of better catalysts. We investigated the influence of the space velocity on the perfor-mance of a microporous SSZ-13 zeolite, and several hierarchically structured SSZ-13 zeolites. Single catalytic turnovers, as recorded with fluorescence microscopy verified that the hierarchical zeolites contain pores larger than the 0.38 nm apertures native to SSZ-13 zeolite. The amount of fluorescent events correlated well with the additional pore volume available due to hierarchical structuring of the zeolite. Positron Emission Tomography (PET) using 11C-labelled methanol was used to map the 2D spatial distribution of the deposits formed during the MTO reaction in the catalyst bed. PET imaging demonstrates that hierarchical structuring not only improves the utilization of the available microporous cages of SSZ-13 but also that the aromatic hydrocarbon pool species are involved in more turnovers before they condense into larger multi-ring structures that deactivate the catalyst.

U2 - 10.1002/cctc.201700567

DO - 10.1002/cctc.201700567

M3 - Article

VL - 9

SP - 3470

EP - 3477

JO - ChemCatChem

JF - ChemCatChem

SN - 1867-3899

IS - 18

ER -