TY - JOUR
T1 - Surface Modification of a Supported Pt Catalyst Using Ionic Liquids for Selective Hydrodeoxygenation of Phenols into Arenes under Mild Conditions
AU - Ohta, Hidetoshi
AU - Tobayashi, Kanako
AU - Kuroo, Akihiro
AU - Nakatsuka, Mao
AU - Kobayashi, Hirokazu
AU - Fukuoka, Atsushi
AU - Hamasaka, Go
AU - Uozumi, Yasuhiro
AU - Murayama, Haruno
AU - Tokunaga, Makoto
AU - Hayashi, Minoru
N1 - Funding Information:
This work was supported by JSPS KAKENHI (grant number JP17K14863) and the Cooperative Research Program of Institute for Catalysis, Hokkaido University (grant numbers 16B1014). We thank the Divisions of Applied Protein Research and Material Science of the Advanced Research Support Center (ADRES), Ehime University for MS and NMR measurements. The XAFS experiments were performed at the BL14B2 beamline of SPring-8 with the approval of the Japan Synchrotron Radiation Institute (JASRI), proposal Nos. 2017A1576 and 2018A1736.
Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/11/22
Y1 - 2019/11/22
N2 - 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.
AB - 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.
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U2 - 10.1002/chem.201902668
DO - 10.1002/chem.201902668
M3 - Article
C2 - 31412147
AN - SCOPUS:85074602191
SN - 0947-6539
VL - 25
SP - 14762
EP - 14766
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 65
ER -
