Porous SiC or SiO2

Silica Gel which is SiO2 is hugely porous which is how it works as a dessicant adsorbing up to 1/3 its weight in water vapor from the air.

Oohhhhhhhhh that's interesting guest, I've often wondered what the chemical name was for silica gel!!

Thanks! - John.

Auto Manufactures use Alumina honeycomb supports for emission catalysts. These suppliers(like Engelhart) may also be a source for SiO2 honeycombs.

Google yields many results such as www.appliedceramics.com.