How to avoid shrinkage of aerogel when hydrogen is freeze-dried using liquid nitrogen?

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What is the protocol for enzyme freeze drying?

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Sylvester Peter Antai

Special drying techniques must be applied to replace the pore liquid with air while maintaining the solid network .....to avoid phase boundaries between the liquid and gas phase during drying is freeze drying. It has been reported that silica aerogels can be produced by replacing the liquid phase by gas phase with only slight shrinkage of the gel.. For more details consult Journal of Nanomaterials. Vol. 2010, Article ID 409310 : https//dx.doi.org/10.1155/2010/409310

Sebnem Sozcu

Hello, I have the similiar issue with BC aerogel. I would like to ask if you had any solutions? That'd be great for me if you could share please.