The stable and reusable Au/ATGO composites were prepared. Aniline tetramer not only modified GO but also can anchor Au NPs. The Au/ATGO composites as a catalyst exhibit good cycling stability.
A sulfated cyclopentanone-formaldehyde condensate was found to be an effective and reusable catalyst for the dehydration of fructose to 5-hydroxymethylfurfural (HMF).