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Molecular shape-selectivity of MFI zeolite nanosheets in n-decane isomerization and hydrocracking

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Title
Molecular shape-selectivity of MFI zeolite nanosheets in n-decane isomerization and hydrocracking
Author(s)
Verheyen, Elke; Changbum Jo; Kurttepeli, Mert; Vanbutsele, Gina; Gobychiya, Elena; Koranyi, Tamas I.; Bals, Sara; Tendeloo, Gustaaf Van; Ryong Ryoo; Kirschhock, Christine E.A.; Martens, Johan A.
Publication Date
2013-04
Journal
JOURNAL OF CATALYSIS, v.300, no., pp.70 - 80
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Abstract
MFI zeolite nanosheets with thickness of 2 and 8 nmwere synthesized, transformed into bifunctional catalysts by loading with platinum and tested in n-decane isomerization and hydrocracking. Detailed analysis of skeletal isomers and hydrocracked products revealed that the MFI nanosheets display transitionstate shape-selectivity similar to bulk MFI zeolite crystals. The suppressed formation of bulky skeletal isomers and C5 cracking products are observed both in the nanosheets and the bulk crystals grown in three dimensions. This is typical for restricted transition-state shape-selectivity, characteristic for the MFI type pores. It is a first clear example of transition-state shape-selectivity inside a zeolitic nanosheet. Owing to the short diffusion path across the sheets, expression of diffusion-based discrimination of reaction products in the MFI nanosheets was limited. The 2-methylnonane formation among monobranched C10 isomers and 2,7-dimethyloctane among dibranched C10 isomers, which in MFI zeolite are favored by product diffusion, was much less favored on the nanosheets compared to the reference bulk ZSM-5 material
URI
https://pr.ibs.re.kr/handle/8788114/1592
ISSN
0021-9517
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
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