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

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

Abstract

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]. Chinese Journal of Catalysis, DOI: 10.1016/S1872-2067(12)60599-3.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(12)60599-3

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

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

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