Adsorption and reaction properties of SnBEA, ZrBEA and H-BEA for the formation of p-xylene from DMF and ethylene: P -xylene from DMF and ethylene

Jingye Yu, Shiyu Zhu, Paul J. Dauenhauer, Hong Je Cho, Wei Fan, R. J. Gorte

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

The adsorption and reaction properties of H-BEA, SnBEA, ZrBEA and siliceous BEA were examined to understand the reaction of 2,5-dimethylfuran (DMF) with ethylene to form p-xylene. Temperature-programmed desorption (TPD) of diethyl ether, DMF, 2,5-hexanedione and p-xylene on each of the zeolites demonstrated that the Brønsted sites in H-BEA are more reactive than the Lewis sites in SnBEA and ZrBEA and tend to promote the oligomerization of DMF and 2,5-hexanedione, even at 295 K; however, the adsorbed 2,5-hexanedione is converted to DMF at both Lewis- and Brønsted-acid sites. H-BEA, SnBEA and ZrBEA all catalyzed the reaction to p-xylene with high selectivity in a continuous-flow reactor, with all three catalysts showing rates that were first order in both DMF and ethylene. H-BEA was found to deactivate rapidly due to coking, while ZrBEA and SnBEA were both stable. The implications of these results for practical applications are discussed.

Original languageEnglish (US)
Pages (from-to)5726-5739
Number of pages14
JournalCatalysis Science and Technology
Volume6
Issue number14
DOIs
StatePublished - Jul 21 2016

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