Hydrothermal solution equipment capable of easy extraction of liquid up to 200°C

Abstract

This paper describes a new hydrothermal solution equipment that allows us to extract a solution from a reaction vessel up to 200°C. The vessel of the equipment is made of Teflon, and is capped by a titanium head accommodating Polyflon filters in the solution exit hole of the head. A quick-connect is screwed into the solution exit hole. The valve of the quick-connect opens when it connects to another quick-connect connecting to a solution-extraction tube. The solution in the vessel is extracted through the tube into a glass bottle filled with water. When the quick-connects are disconnected the valve of the quick connect closes. Because the vessel is free from the solution-extraction tube when it is in a furnace, the vessel can rotate in the furnace to mix a solid and a solution during reaction. This equipment can be used for measuring the solubility of a solid and the minor element distribution between a solid and a solution. Using this equipment, the solubilities of quartz were successfully measured at 150 and 200°C.