I think you are on the right track, and if you solve that you just probably will become very, filthy wealthy.
I got curious about clay & took a course in soil engineering in school - also so I could get away from all the boring math profs and learn something that was at least somewhat more akin to my old tractor. Here's the highlights:
Clay is simply fascinating stuff. It is the final disintigration product as some rocks decompose.
Granite decomposes to quartz gravel and clay - but the clay washes out of the granite mountains and down to the plains.....all the way across eastern Colorado & Kansas to the river and then the sea. Sometimes you will find a pocket of clay down in a granite split, though.... I've found green clay that way. It looked as pure as modeling clay. Old timers looked for gold dust in natural sediment filters like that.
Did you know that there are many kinds of clay but that chemically they all fit a common pattern? So it helps to know which clay you have so that you know what chemistry you are starting with. Common ones are illite, bentonite, keolinite, and montmorillanite. They are built around different light metals - like lithium & aluminum, sometimes iron & others.
The clay molecule is shaped like a plate - sortof - anyway it stacks like plates and is slightly charged - which is why water sticks to it so well. And that stacking is is what makes those tiny slippery platelets slide over one another so well. They are using water as a lube.
I've always wondered if there would be a process - possibly chemical - so that you could use the innate chemistry of clay to drive the water out or exchange water for something else. Go for it. Let us know......
take a look at:
or also
enjoy!
rScotty