Premium
Surface Modification of a Supported Pt Catalyst Using Ionic Liquids for Selective Hydrodeoxygenation of Phenols into Arenes under Mild Conditions
Author(s) -
Ohta Hidetoshi,
Tobayashi Kanako,
Kuroo Akihiro,
Nakatsuka Mao,
Kobayashi Hirokazu,
Fukuoka Atsushi,
Hamasaka Go,
Uozumi Yasuhiro,
Murayama Haruno,
Tokunaga Makoto,
Hayashi Minoru
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201902668
Subject(s) - hydrodeoxygenation , phenols , selectivity , chemistry , catalysis , ionic liquid , adsorption , lignin , organic chemistry , surface modification , trifluoromethanesulfonate , inorganic chemistry
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 H 2 . 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.