Effects of a sodium carbonate (Na2CO3) additive on the conversion of phenethyl phenyl ether (PPE) in high-temperature water

Hee Jun Eom, Dae Won Lee, Yoon Ki Hong, Sang Ho Chung, Myung Gi Seo, Kwan Young Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The use of high-temperature water (including near/super-critical water) has been studied as a promising reaction method for the valorization of lignocellulose biomass (lignin). The dissociation of lignin usually begins with the cleavage of ether bonds which are the weakest chemical linkages in a lignin structure. Of the ether bonds, the most prevalent type is a β-ether bond; phenethyl phenyl ether (PPE) is regarded as a suitable model compound for studying the cleavage of this bond. This study investigates the conversion of PPE in high-temperature water, with sodium carbonate (Na2CO 3) serving as an additive to promote ionic pathways. The addition of sodium carbonate greatly enhanced the conversion of PPE and produced phenol as the primary product. It was proposed that phenol was obtained through the dissociation of a Na+-PPE adduct, which progressed via heterolytic ether cleavage and α-hydrogen abstraction.

Original languageEnglish
Pages (from-to)152-159
Number of pages8
JournalApplied Catalysis A: General
Volume472
DOIs
Publication statusPublished - 2014 Feb 22

Keywords

  • Alkali carbonate
  • High-temperature water
  • Hydrolysis
  • Phenethyl phenyl ether (PPE)
  • β-ether bond

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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