Abstract Aim of this work is to apply protective and homogeneous shellac coating layers on the surface hydrophilic open-pore cellulose aerogel particles with low densities ? 0.1 g/cm 3 high specific areas in range ~ 400–450 m 2 /g while keeping aerogels’ microstructure intact during processing. For purpose, an innovative miniaturized spouted bed setup was used. Successful process settings for a...