Xerogel

A xerogel ( xero- , Greek prefix of ancient Greek ξηρός xērós "dry", "dry") is a porous solid with a network-like structure that emerged from the drying of a lyogel . An example of this is silica gel .

In contrast to aerogels , xerogels show considerable structural changes during drying, which are associated with shrinkage processes and a decrease in porosity . In the case of xerogels, this is usually around 50%, while aerogels retain around 90% of their original volume.

literature

• Stefan Sepeur: Nanotechnology. Vincentz Network, Hannover 2008, ISBN 3-87870-333-3 ( limited preview in Google book search), p. 28.
• JF Le Page: Applied heterogeneous catalysis: design, manufacture, use of solid catalysts. Editions Technip, Paris 1987, ISBN 2-7108-0531-6 ( limited preview in Google book search), p. 88.