zeolite

The dry zeolite is exposed to water under low-pressure causing the water to evaporate and be adsorbed into the zeolite.

You would always lose heat as black body radiation for the period of time the Zeolite is hotter than the environment!

You can heat Zeolite using solar power during the day and release the energy at night.

They are using a fairly normal oxygen concentrator that uses zeolite to remove nitrogen.

During the day, solar energy is used to drive water out of the zeolite.

Contrary to the parent, it was the earlier zeolite that could cause burns.

Try By applying heat to Fraunhofer’s zeolite as it comes into contact with water, a chemical reaction adsorbs the water and emits heat.

A couple are based on minerals (zeolite and kaolin), and intriguingly, a couple are based on chitosan (the material in shellfish and insect exoskeletons).

Use zeolite to adsorb water from the air and then boil it off with heat produced from your solar panels and recollect the water.

Now we have yet another effect: The mass density of these zeolite balls is probably WAY below that of oil.

No, your conversion of ambient heat to drying the zeolite and the inverse release of heat when adding water; are both less than perfectly efficient.

The retention of heat in the dried zeolite is not a conversion step, and the total entropy of the system doesn't change during that time.

I also wonder if "Kitty Litter/Zeolite" was read without context in the white-paper, i.e., any type of kitty litter rather than specifically the inorganic kind.

After you are done heating the Zeolite to "charge" it, it will return to the ambient temperature, but it still has (lots of) energy stored in the chemical bonds.

In contrast, when you store heat in Zeolite, you are not storing it as kinetic energy, you are driving an endothermic chemical reaction that stores the energy in high-energy chemical bonds.