Dehydration of xylose to furfural using a Lewis or Brönsted acid catalyst and N2 stripping

doi:10.1016/S1872-2067(12)60599-3

催化学报

Dehydration of xylose to furfural using a Lewis or Brönsted acid catalyst and N₂stripping

Iker AGIRREZABAL-TELLERIA^a, Cristina GARCÍA-SANCHO^b, Pedro MAIRELES-TORRES^b, Pedro Luis ARIAS^a

a Department of Chemical and Environmental Engineering, Engineering School, University of the Basque Country (EHU/UPV), Alameda Urquijo s/n, 48013, Bilbao, Spain;
b Department of Inorganic Chemistry, Cristallography and Mineralogy (Unit Associated to ICP-CSIC), Science Faculty, University of Málaga, Campus Teatinos s/n, 29071, Málaga, Spain

收稿日期:2013-02-24 修回日期:2013-04-01 出版日期:2013-07-16 发布日期:2013-07-16
通讯作者: Iker AGIRREZABAL-TELLERIA

Dehydration of xylose to furfural using a Lewis or Brönsted acid catalyst and N₂stripping

Iker AGIRREZABAL-TELLERIA^a, Cristina GARCÍA-SANCHO^b, Pedro MAIRELES-TORRES^b, Pedro Luis ARIAS^a

a Department of Chemical and Environmental Engineering, Engineering School, University of the Basque Country (EHU/UPV), Alameda Urquijo s/n, 48013, Bilbao, Spain;
b Department of Inorganic Chemistry, Cristallography and Mineralogy (Unit Associated to ICP-CSIC), Science Faculty, University of Málaga, Campus Teatinos s/n, 29071, Málaga, Spain

Received:2013-02-24 Revised:2013-04-01 Online:2013-07-16 Published:2013-07-16

摘要/Abstract

摘要： The activity of Lewis (Nb₂O₅) and Brönsted (Amberlyst 70) acid catalysts for the cyclodehydration of xylose to furfural was studied. The nature of the acidity resulted in significant changes in the reaction mechanism. Lewis acid sites promote the formation of xylulose, while Brönsted acid sites are required to further dehydrate the sugar to furfural. Amberlyst 70 in water/toluene at 175 ℃ showed lower activity but gave a higher furfural yield. Using N₂ as the stripping agent considerably improved the furfural yield and product purity in the stripped stream. Catalyst stability was also studied.

关键词: Lewis acid, Brönsted acid, Reaction mechanism, Xylose dehydration, Furfural, Nitrogen stripping

Abstract: The activity of Lewis (Nb₂O₅) and Brönsted (Amberlyst 70) acid catalysts for the cyclodehydration of xylose to furfural was studied. The nature of the acidity resulted in significant changes in the reaction mechanism. Lewis acid sites promote the formation of xylulose, while Brönsted acid sites are required to further dehydrate the sugar to furfural. Amberlyst 70 in water/toluene at 175 ℃ showed lower activity but gave a higher furfural yield. Using N₂ as the stripping agent considerably improved the furfural yield and product purity in the stripped stream. Catalyst stability was also studied.

Key words: Lewis acid, Brönsted acid, Reaction mechanism, Xylose dehydration, Furfural, Nitrogen stripping

Iker AGIRREZABAL-TELLERIA, Cristina GARCÍA-SANCHO, Pedro MAIRELES-TORRES, Pedro Luis ARIAS. Dehydration of xylose to furfural using a Lewis or Brönsted acid catalyst and N₂stripping[J]. 催化学报, DOI: 10.1016/S1872-2067(12)60599-3.

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https://www.cjcatal.com/CN/Y2013/V34/I7/1402

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Dehydration of xylose to furfural using a Lewis or Brönsted acid catalyst and N₂stripping

Dehydration of xylose to furfural using a Lewis or Brönsted acid catalyst and N₂stripping

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