| abstract |
The invention relates to a process for manufacturing hydroxymethylfurfural from a liquid medium comprising at least one aldohexose or an oside capable of releasing at least one aldohexose, in which the liquid is heated to a temperature greater than 100 deg. C. simultaneous presence of two distinct acid catalysts, the first of which consists of a tectosilicate or of a clay not functionalized by acid groups in proton form and of Si / Al ratio is less than 4, and the second of which is a non-functionalized tectosilicate by acid groups, in proton form, with an Si / Al ratio greater than 5. |