Surface Modification of a Supported Pt Catalyst Using Ionic Liquids for Selective Hydrodeoxygenation of Phenols into Arenes under Mild Conditions

Hidetoshi Ohta, Kanako Tobayashi, Akihiro Kuroo, Mao Nakatsuka, Hirokazu Kobayashi, Atsushi Fukuoka, Go Hamasaka, Yasuhiro Uozumi, Haruno Murayama, Makoto Tokunaga, Minoru Hayashi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The selective and efficient removal of oxygenated groups from lignin-derived phenols is a critical challenge to utilize lignin as a source for renewable aromatic chemicals. This report describes how surface modification of a zeolite-supported Pt catalyst using ionic liquids (ILs) remarkably increases selectivity for the hydrodeoxygenation (HDO) of phenols into arenes under mild reaction conditions using atmospheric pressure H2. Unmodified Pt/H-ZSM-5 converts phenols into aliphatic species as the major products along with a slight amount of arenes (10 % selectivity). In contrast, the catalyst modified with an IL, 1-butyl-3-methylimidazolium triflate, keeps up to 76 % selectivity for arenes even at a nearly complete conversion of phenols. The IL on the surface of Pt catalyst may offer the adsorption of phenols in an edge-to-face manner onto the surface, thus accelerating the HDO without the ring hydrogenation.

Original languageEnglish
Pages (from-to)14762-14766
Number of pages5
JournalChemistry - A European Journal
Volume25
Issue number65
DOIs
Publication statusPublished - Nov 22 2019

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

Fingerprint Dive into the research topics of 'Surface Modification of a Supported Pt Catalyst Using Ionic Liquids for Selective Hydrodeoxygenation of Phenols into Arenes under Mild Conditions'. Together they form a unique fingerprint.

  • Cite this