Unprecedented activity and stability on zirconium phosphates grafted mesoporous silicas for renewable aromatics production from furans

Saravanan Kasipandi, Jae Min Cho, Kyung Soo Park, Chae Ho Shin, Jong Wook Bae*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

The selective production of aromatic chemicals such as benzene, toluene and xylenes from biomass-derived furans are quite challenging since zeolites and other supported heterogeneous catalysts are easily deactivated by trapping oligomeric species over their pores. Herein, a series of zirconium phosphates (ZrP) grafted on ordered mesoporous architectures of silicas was prepared by nonhydrolytic sol-gel method, and evaluated for the selective production of valuable para-xylene (pX) by catalytic reaction of 2,5-dimethylfuran (DMF) with gaseous ethylene through tandem Diels-Alder cycloaddition and dehydration reactions. The surface properties such as P/Zr ratio, Brönsted (B) to Lewis (L) acid sites and grafting layer thickness of the ZrP grafted silica catalysts were largely altered by changing P/Zr ratios and parent mesoporous silica surfaces. The amounts and strengths of acidic sites including B and L sites from the active (Zr–O)2–PO(OH) and (Zr–O)3–PO species were crucial factors for the differences in pX production rate on the ZrP grafted KIT-6, SBA-15 and fumed SiO2.

Original languageEnglish
Pages (from-to)10-20
Number of pages11
JournalJournal of Catalysis
Volume385
DOIs
Publication statusPublished - May 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Aromatics
  • Biomass
  • Optimal Brönsted/Lewis acid sites
  • Ordered mesoporous silicas
  • Zirconium phosphate species

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