Yokoyama Tomoya

ヨコヤマトモヤ | Yokoyama Tomoya

Affiliation and department：
Job title： Professor
Homepage URL (1)： http://www.woodchemistry.fp.a.u-tokyo.ac.jp/index.html

Research field (3)： Environmental materials/recycling technology , Environmental load reduction/restoration technology , Wood science

Research keywords (34)：リグニン , パルプ , 酸素 , 多糖類 , フェノール , 活性酸素種 , 炭水化物 , 漂白 , エピマー , 立体配置 , 立体電子効果 , 同位体効果 , モデル化合物 , 脱リグニン , 流量計 , 速度論的同位体効果 , マンガン , 糖 , アルカリ , 酸化 , 細胞壁 , 木化 , 土壌改良剤 , 近接場 , キシラン , シリンギル , 樹木 , 塩化リチウム , 赤外分光スペクトル , 蒸解・漂白化学 , 木材化学 , oxygen , lignin , bleaching

Research theme for competitive and other funds (9)：

2021 - 2025 木質バイオマスの有効利用を実現させる副次生成リグニン由来ファインケミカルの創成
2013 - 2017 Construction of a novel bleaching method consisting of manganese-added alkaline oxygen treatment successively followed by acidic manganese treatment
2010 - 2012 Analysis of chemical nature and interaction of cell wall components by the use of wood cell wall solvent system
2008 - 2011 Fundamental analysis for the degradation mechanisms of carbohydrate and lignin under oxygen bleaching conditions
2005 - 2008 How does the structure of lignin correspond to mechanical circumstances

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Papers (90)：

Ryota Mizutani, Kyoko S. Katsumata, Toshihiro Komatsu, Tomoya Yokoyama. Revisiting the mechanism of β-O-4 bond cleavage during acidolysis of lignin part 10: reactions of C6-C2-type non-phenolic syringyl model compounds and comparison of the reactions with those of the guaiacyl analogues. Journal of Wood Science. 2024. 70. 22
Qiaoqiao Ye, Kyoko S. Katsumata, Toshihiro Komatsu, Tomoya Yokoyama. Revisiting the mechanism of β-O-4 bond cleavage during acidolysis of lignin. Part 9: Comprehensive results for guaiacyl-type compounds and the difference in participation mode of bromide and chloride anions between C₆-C₃-type and C₆-C₂-type compounds. Journal of Wood Chemistry and Technology. 2024. 44. 3. 147-163
Toshihiro Komatsu, Kazutaka Yamauchi, Tomoya Yokoyama. Promotive or suppressive effect of co-existing nucleophiles on lignin condensation in alkaline pulping processes. Journal of Wood Chemistry and Technology. 2023. 43. 2. 67-77
Tatsuyuki Sakai, Kyoko S. Katsumata, Tomoya Yokoyama. Optimization of alkaline hydrogen peroxide treatment of lignin model compounds at high pH levels for producing aromatic aldehyde and acids as fine chemicals. Lignin. 2022. 3. 15-25
Toshihiro Komatsu, Tomoya Yokoyama. Revisiting the condensation reaction of lignin in alkaline pulping with quantitativity part III: predominant formation of α-β-type over α-5-type condensation product in soda cooking treatments of apocynol and creosol. Journal of Wood Science. 2022. 68. 60

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Education (4)：

1996 - 1999 The University of Tokyo Graduate School of Agricultural and Life Sciences Biomaterial Sciences
1994 - 1996 The University of Tokyo Graduate School of Agricultural and Life Sciences
1992 - 1994 The University of Tokyo
1990 - 1992 The University of Tokyo College of Arts and Sciences

Professional career (1)：

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Work history (10)：

2021/04 - 現在 The University of Tokyo
2012/08 - 2021/03 The University of Tokyo Graduate School of Agricultural and Life Sciences, Biomaterial Sciences
2007/08 - 2012/08 The University of Tokyo Graduate School of Agricultural and Life Sciences, Biomaterial Sciences
2007/04 - 2007/08 The University of Tokyo Graduate School of Agricultural and Life Sciences, Biomaterial Sciences
2004/11 - 2007/03 The University of Tokyo Graduate School of Agricultural and Life Sciences, Biomaterial Sciences

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Committee career (19)：

2023/08 - 現在 Japan Wood Research Society International committee
2023/07 - 現在 Japan TAPPI OTEC
2023/06 - 現在 The Lignin Society Director
2021/07 - 現在紙パルプ技術協会木材科学委員会委員
2021/07 - 現在紙パルプ技術協会理事

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Awards (4)：

2019/09 - International Academy of Wood Science Fellow
2013/03 - 第53回日本木材学会賞(2012年度)
2005/10 - 2004年紙パルプ技術協会賞
2005/10 - 2004年印刷朝陽会賞

Association Membership(s) (4)：

International Association of Wood Science , The Lignin Society , Japan TAPPI , THE JAPAN WOOD RESEARCH SOCIETY

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