Journal
CATALYSIS COMMUNICATIONS
Volume 9, Issue 11-12, Pages 2144-2148Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2008.04.016
Keywords
xylose; furfural; dehydration; aluminosilicate; zeolite; delamination; solid acid
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A delaminated zeolite with Si/Al = 29, obtained by swelling and ultrasonication of a laminar precursor of Nu-6(2), has been examined as a solid acid catalyst for the liquid phase cyclodehydration of xylose to furfural at 170 degrees C, using a water-toluene biphasic reactor system. The final material, with a specific surface area about seven times higher than that for proton-exchanged Nu-6(2), gave a reaction rate about two times higher than that for H-Nu-6(2), and could be recycled several times without loss of performance or Al leaching. The furfural yield after 4 h reaction was 47%, compared with 34% in the presence of an H-mordenite sample with Si/Al similar to 6. (C) 2008 Elsevier B.V. All rights reserved.
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