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Filipe Marques Mota
나노물질 및 화학반응 연구단
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Impact of pore topology and crystal thickness of nanosponge zeolites on the hydroconversion of ethylbenzene

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Title
Impact of pore topology and crystal thickness of nanosponge zeolites on the hydroconversion of ethylbenzene
Author(s)
F. Marques Mota; P. Eliášová; J. Jung; R. Ryoo
Publication Date
2016-04
Journal
CATALYSIS SCIENCE & TECHNOLOGY, v.6, no.8, pp.2653 - 2662
Publisher
ROYAL SOC CHEMISTRY
Abstract
The gas-phase hydroconversion of ethylbenzene was investigated in the presence of intimate mixtures of ∗MRE, MFI and MTW-type zeolite nanosponges and a hydrogenating component (Pt/Al2O3). The nanomorphic zeolites were prepared using multiammonium surfactants acting as dual-porogenic agents directing the formation of micro- and mesopores simultaneously. The effects of the zeolite topology (pore size and dimensionality) and crystal thickness on the product selectivity of ultra-thin zeolite frameworks (<10 nm) were investigated. The enhanced catalytic activity confirmed the importance of improved molecular diffusion. These nanosponges were unique in producing more xylenes, suggesting lower confinement effects. The selectivity for p-xylene and the selectivity towards ethylbenzene hydroisomerization, dealkylation, disproportionation, transalkylation and hydrocracking were evaluated. Despite the similar <10 nm crystal thickness of all the nanosponge zeolites, the presence of spacious channel interconnections in MFI was concluded to remarkably impact the product selectivity compared to straight channels as in ∗MRE and MTW. Our findings clarify the relatively unexplored transformation of alkyl-aromatics over ultra-thin zeolite crystals, through five typical catalytic reactions of major industrial interest. © The Royal Society of Chemistry 2016
URI
https://pr.ibs.re.kr/handle/8788114/3176
ISSN
2044-4753
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
Catal. Sci. Technol., 2016, 6, 2653–2662.pdfDownload

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