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Title: Synergistic effect of acidity and extraframework position in faujasite on renewable $p$-xylene production

Abstract

p-Xylene is a commodity chemical used for the manufacture of plastic bottles and textiles. For the biomass-based route from 2,5-dimethylfuran (DMF) and ethylene, the properties of the catalyst such as acidity effect, product selectivity and catalyst activity play an important role. To determine the effect of acidity and extraframework position in faujasite zeolite on p-xylene selectivity, type Y (Si/Al = 40 and Si/Al = 2.55) and X (Si/Al = 1.25) zeolites containing the extraframework Lewis acids Na+, K+, Li+, Ag+ and Cu+, and a Brønsted acid-containing zeolite, HY (Si/Al = 40), were prepared and tested for p-xylene production under solvent-free conditions and at low conversions (less than 35%). Here it is reported that NaX zeolite catalyses DMF and ethylene conversion to p-xylene with 91% selectivity at 30% conversion, which is better than the 25% p-xylene selectivity obtained when using HY at similar conversion. ANOVA was used to show that there is a synergistic effect between acidity and extraframework position on the rate of p-xylene production. At 7% DMF conversion, Lewis acids were more selective than the Brønsted acid tested (50 versus 30% p-xylene selectivity). p-Xylene selectivity is optimal when using Lewis acids with moderate acidity and extraframework positions located inmore » the faujasite supercage (sites II and III).« less

Authors:
ORCiD logo [1]
  1. United Arab Emirates Univ., Al Ain (United Arab Emirates). Dept. of Chemical and Petroleum Engineering; Univ. of Delaware, Newark, DE (United States). Dept. of Chemical and Biomolecular Engineering
Publication Date:
Research Org.:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
OSTI Identifier:
1499907
Grant/Contract Number:  
SC0001004; 1247394
Resource Type:
Accepted Manuscript
Journal Name:
Royal Society Open Science
Additional Journal Information:
Journal Volume: 5; Journal Issue: 5; Journal ID: ISSN 2054-5703
Publisher:
The Royal Society Publishing
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Mahmoud, Eyas. Synergistic effect of acidity and extraframework position in faujasite on renewable $p$-xylene production. United States: N. p., 2018. Web. doi:10.1098/rsos.172471.
Mahmoud, Eyas. Synergistic effect of acidity and extraframework position in faujasite on renewable $p$-xylene production. United States. doi:10.1098/rsos.172471.
Mahmoud, Eyas. Wed . "Synergistic effect of acidity and extraframework position in faujasite on renewable $p$-xylene production". United States. doi:10.1098/rsos.172471. https://www.osti.gov/servlets/purl/1499907.
@article{osti_1499907,
title = {Synergistic effect of acidity and extraframework position in faujasite on renewable $p$-xylene production},
author = {Mahmoud, Eyas},
abstractNote = {p-Xylene is a commodity chemical used for the manufacture of plastic bottles and textiles. For the biomass-based route from 2,5-dimethylfuran (DMF) and ethylene, the properties of the catalyst such as acidity effect, product selectivity and catalyst activity play an important role. To determine the effect of acidity and extraframework position in faujasite zeolite on p-xylene selectivity, type Y (Si/Al = 40 and Si/Al = 2.55) and X (Si/Al = 1.25) zeolites containing the extraframework Lewis acids Na+, K+, Li+, Ag+ and Cu+, and a Brønsted acid-containing zeolite, HY (Si/Al = 40), were prepared and tested for p-xylene production under solvent-free conditions and at low conversions (less than 35%). Here it is reported that NaX zeolite catalyses DMF and ethylene conversion to p-xylene with 91% selectivity at 30% conversion, which is better than the 25% p-xylene selectivity obtained when using HY at similar conversion. ANOVA was used to show that there is a synergistic effect between acidity and extraframework position on the rate of p-xylene production. At 7% DMF conversion, Lewis acids were more selective than the Brønsted acid tested (50 versus 30% p-xylene selectivity). p-Xylene selectivity is optimal when using Lewis acids with moderate acidity and extraframework positions located in the faujasite supercage (sites II and III).},
doi = {10.1098/rsos.172471},
journal = {Royal Society Open Science},
number = 5,
volume = 5,
place = {United States},
year = {2018},
month = {5}
}

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Works referenced in this record:

Selective Production of Aromatics from Alkylfurans over Solid Acid Catalysts
journal, January 2013

  • Wang, Dong; Osmundsen, Christian M.; Taarning, Esben
  • ChemCatChem, Vol. 5, Issue 7, p. 2044-2050
  • DOI: 10.1002/cctc.201200757