Mesoporous MFI zeolites as high performance catalysts for Diels-Alder cycloaddition of bio-derived dimethylfuran and ethylene to renewable p-xylene

Zeolite solid-acid catalyst can produce p-xylene (PX) via a renewable synthetic route through Diels-Alder cycloaddition and dehydration reactions of bio-derived 2,5-dimethylfuran (DMF) and ethylene (DMF-to-PX). Here, to find a key factor in the physicochemical properties of a zeolite catalyst, we synthesized a series of mesoporous MFI zeolite nanosheets with systematically controlled thickness (2.5 and 7.5 nm) and silica-alumina ratio (Si/AI =48-340) as well-defined model catalysts for PX production. From the catalytic results using these MFI zeolite nanosheets and conventional MFI zeolites, PX production yield was found to be strongly related to zeolite crystal thickness and concentration Of Bronsted acid sites of the MFI zeolite catalysts. The MFI zeolite nanosheet with small thickness provided high PX production due to the presence of Bronsted acid sites on the exterior surface and facile mass transfer of aromatic compounds through mesopores. To verify these catalytic factors and to apply it to commercially available zeolite, a mesoporous MFI zeolite was prepared from a commercial ZSM-5 zeolite via a simple post-treatment process; mesoporous MFI-type zeolites were tested in the DMF-to-PX reaction. This mesoporous MFI zeolite exhibited a superior PX yield (75.8%) with high DMF conversion and PX selectivity compared with those characteristics of pristine MFI zeolite (PX yield=8.4%). (C) 2017 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2017-06
Language
English
Keywords

EXTERNAL ACID SITES; NANOSHEETS; NANOSPONGE; CONVERSION; 2,5-DIMETHYLFURAN; HYDROCARBONS; SURFACES; METHANOL

Citation

APPLIED CATALYSIS B-ENVIRONMENTAL, v.206, pp.490 - 500

ISSN
0926-3373
DOI
10.1016/j.apcatb.2017.01.031
URI
http://hdl.handle.net/10203/223219
Appears in Collection
CH-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
  • Hit : 38
  • Download : 0
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0