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Production of phenols from lignin-derived slurry liquid using iron oxide catalyst

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Title: Production of phenols from lignin-derived slurry liquid using iron oxide catalyst
Authors: Yoshikawa, Takuya Browse this author
Shinohara, Satoshi Browse this author
Yagi, Taichi Browse this author
Ryumon, Naonori Browse this author
Nakasaka, Yuta Browse this author →KAKEN DB
Tago, Teruoki Browse this author →KAKEN DB
Masuda, Takao Browse this author →KAKEN DB
Keywords: Biomass utilization
Lignin conversion
Iron oxide catalyst
High pressure flow reactor
Issue Date: Mar-2014
Publisher: Elsevier science bv
Journal Title: Applied catalysis b-environmental
Volume: 146
Start Page: 289
End Page: 297
Publisher DOI: 10.1016/j.apcatb.2013.03.010
Abstract: A two-step process consisting of depolymerization and catalytic cracking without hydrogen addition was carried out to produce phenols from lignin. In the first step, lignin was depolymerized using a silica-alumina catalyst in a water/1 -butanol solution at 623 K for 2 h. After the reaction, lignin-derived slurry liquid was obtained in 67 C-mol% yield. From the model studies, it was considered that lignin was mainly depolymerized via hydrolysis of aryl ether bonds between lignin units. For the second step, the catalytic reaction of the 1-butanol phase of the slurry liquid was carried out over an iron oxide catalyst using a high pressure fixed-bed flow reactor at 673 K. The catalytic reaction under high pressure steam conditions was effective for the suppression of the formation of solid products. In addition, the recovery fraction of phenols increased as the F-H2O/F value (the flow rate ratio of steam to the slurry liquid) increased, resulting in 17% of phenols at F-H2O/F = 5 for 2-4h. From the model studies and our previous results, catechol and methoxyphenol in the slurry liquid were considered to be converted into phenols, cresols and other alkyl phenols over the iron oxide catalyst. (C) 2013 Elsevier B.V. All rights reserved.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 多湖 輝興

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