Efficient Epimerization of Aldoses Using Layered Niobium Molybdates

Atsushi Takagaki, Shogo Furusato, Ryuji Kikuchi, S. Ted Oyama

研究成果: ジャーナルへの寄稿記事

12 引用 (Scopus)

抄録

Both non-acidic LiNbMoO6 and strongly acidic HNbMoO6 efficiently catalyze the epimerization of sugars including glucose, mannose, xylose, and arabinose in water. The reactions over these oxides reached almost equilibrium within a few hours where yields of corresponding epimers from glucose, xylose, and arabinose were 24-29 %. The layered mixed oxides functioned as heterogeneous catalysts and could be reused without loss of activity, whereas bulk molybdenum oxide MoO3 was completely dissolved during the reaction. A 13C substitution experiment showed that the reaction proceeds through a 1,2-rearrangement mechanism. The surface Mo octahedra were responsible for the activity. The layered HNbMoO6 could also afford mannose from cellobiose through hydrolysis and successive epimerization.

元の言語英語
ページ(範囲)3769-3772
ページ数4
ジャーナルChemSusChem
8
発行部数22
DOI
出版物ステータス出版済み - 11 23 2015

Fingerprint

Niobium
niobium
Arabinose
Xylose
Mannose
Oxides
Glucose
oxide
Molybdenum oxide
Cellobiose
glucose
Sugars
Hydrolysis
Substitution reactions
molybdenum
Catalysts
Water
hydrolysis
sugar
substitution

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

これを引用

Efficient Epimerization of Aldoses Using Layered Niobium Molybdates. / Takagaki, Atsushi; Furusato, Shogo; Kikuchi, Ryuji; Oyama, S. Ted.

:: ChemSusChem, 巻 8, 番号 22, 23.11.2015, p. 3769-3772.

研究成果: ジャーナルへの寄稿記事

Takagaki, Atsushi ; Furusato, Shogo ; Kikuchi, Ryuji ; Oyama, S. Ted. / Efficient Epimerization of Aldoses Using Layered Niobium Molybdates. :: ChemSusChem. 2015 ; 巻 8, 番号 22. pp. 3769-3772.
@article{2269ddee2afc4aa19f45d50821f810d2,
title = "Efficient Epimerization of Aldoses Using Layered Niobium Molybdates",
abstract = "Both non-acidic LiNbMoO6 and strongly acidic HNbMoO6 efficiently catalyze the epimerization of sugars including glucose, mannose, xylose, and arabinose in water. The reactions over these oxides reached almost equilibrium within a few hours where yields of corresponding epimers from glucose, xylose, and arabinose were 24-29 {\%}. The layered mixed oxides functioned as heterogeneous catalysts and could be reused without loss of activity, whereas bulk molybdenum oxide MoO3 was completely dissolved during the reaction. A 13C substitution experiment showed that the reaction proceeds through a 1,2-rearrangement mechanism. The surface Mo octahedra were responsible for the activity. The layered HNbMoO6 could also afford mannose from cellobiose through hydrolysis and successive epimerization.",
author = "Atsushi Takagaki and Shogo Furusato and Ryuji Kikuchi and Oyama, {S. Ted}",
year = "2015",
month = "11",
day = "23",
doi = "10.1002/cssc.201501093",
language = "English",
volume = "8",
pages = "3769--3772",
journal = "ChemSusChem",
issn = "1864-5631",
publisher = "Wiley-VCH Verlag",
number = "22",

}

TY - JOUR

T1 - Efficient Epimerization of Aldoses Using Layered Niobium Molybdates

AU - Takagaki, Atsushi

AU - Furusato, Shogo

AU - Kikuchi, Ryuji

AU - Oyama, S. Ted

PY - 2015/11/23

Y1 - 2015/11/23

N2 - Both non-acidic LiNbMoO6 and strongly acidic HNbMoO6 efficiently catalyze the epimerization of sugars including glucose, mannose, xylose, and arabinose in water. The reactions over these oxides reached almost equilibrium within a few hours where yields of corresponding epimers from glucose, xylose, and arabinose were 24-29 %. The layered mixed oxides functioned as heterogeneous catalysts and could be reused without loss of activity, whereas bulk molybdenum oxide MoO3 was completely dissolved during the reaction. A 13C substitution experiment showed that the reaction proceeds through a 1,2-rearrangement mechanism. The surface Mo octahedra were responsible for the activity. The layered HNbMoO6 could also afford mannose from cellobiose through hydrolysis and successive epimerization.

AB - Both non-acidic LiNbMoO6 and strongly acidic HNbMoO6 efficiently catalyze the epimerization of sugars including glucose, mannose, xylose, and arabinose in water. The reactions over these oxides reached almost equilibrium within a few hours where yields of corresponding epimers from glucose, xylose, and arabinose were 24-29 %. The layered mixed oxides functioned as heterogeneous catalysts and could be reused without loss of activity, whereas bulk molybdenum oxide MoO3 was completely dissolved during the reaction. A 13C substitution experiment showed that the reaction proceeds through a 1,2-rearrangement mechanism. The surface Mo octahedra were responsible for the activity. The layered HNbMoO6 could also afford mannose from cellobiose through hydrolysis and successive epimerization.

UR - http://www.scopus.com/inward/record.url?scp=84948696030&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84948696030&partnerID=8YFLogxK

U2 - 10.1002/cssc.201501093

DO - 10.1002/cssc.201501093

M3 - Article

C2 - 26494106

AN - SCOPUS:84948696030

VL - 8

SP - 3769

EP - 3772

JO - ChemSusChem

JF - ChemSusChem

SN - 1864-5631

IS - 22

ER -