(I suppose that you mean supercritical state of fluid.)
Supercritical state of liquid-gas is a state that liquid state and gas state stop to exist at particular temperature and pressure.
There is only just fluid state which has both liquid and gas property and if you change the pressure or temperature just a bit, it will change to one of the state.
How to achieve supercritical state ?
The supercritical state is done at HIGH TEMPERATURE and PRESSURE.
For example, the famous CO2 fluid (used to separate caffeine from the coffee bean) is acquired at 304.1 Kelvin and 72.8 atm.
Supercritical fluid chromatography is very similar to high pressure liquid chromatography (HPLC), however the mobile phase exists in a supercritical state. To refresh your memory, recall that super critical fluids exist at temperatures and pressures higher than a substances critical point. This means that the fluid acts as both a gas and a liquid. For example, a supercritical fluid may pass through substances like a gas, but also dissolve substances like a liquid. Why do supercritical fluids exist? Well, the temperature is high enough that the molecules cannot exist together as a fluid because they have too much energy to stick together. However, the pressure is too high for the molecules to have a root mean square distance sufficient enough to exist as a gas. SFC exploits this property, using a supercritical fluid to dissolve the chemical in question into the fluid, but move it quickly in the gas phase. Heavy molecules travel slower, while light molecules travel faster, thus causing separation. In addition, chiral molecules can be separated via this method.
Largely. Jupiter's outer portion is gas, but much of the interior is a supercritical fluid, a state of matter that is neither liquid nor gas, but has some characteristics of both. Deeper into the interior there is probably yet another state of matter; liquid metallic hydrogen.
Liquid carbon dioxide (supercritical CO2) is used as solvent.
This type of matter is called supercritical fluid.
the example of supercritical fluid are water deep inside the earth
No. Saturn consists mostly of supercritical hydrogen and helium, in a state between liquid and gas.
Supercritical fluid extraction is now used in laboratories.
Because at room temperature it behaves like gas. Although it is in supercritical state, its density becomes very low on temperatures far above critical value, so it behaves like gas and it's not useful for extraction.
Bharat Heavy Electricals Limited (BHEL) has despatched boiler columns for the first supercritical boiler, being manufactured in India. These columns will be used for installation of BHEL-built supercritical Boilers at Barh Thermal Power Project Stage-II, located about 75 kms from Patnain Bihar
supercritical
Supercritical Fractionation and Isomerization Area
Supercritical carbon dioxide is used as a non polar solvent to extract caffeine from coffee beens. Supercritical gases are not quite gases and not quite liquids but sort of in between.
My understanding is that it is due to high enthalpy in the steam that results in the formation of a vacuum bordered by steam and supercritical fluid. The expansion of this pocket will eventually become too much for the surface tension to deal with and the supercritical fluid will undergo a rapid expansion into its gaseous state. This is extremely dangerous as there is a high risk of combustion due to the rapid expansion at extreme temperatures. Hope this helps!
Jung-Seok Yi has written: 'The extraction of pentachlorophenol from pressure treated wood using supercritical carbon dioxide' -- subject(s): Pentachlorophenol, Supercritical fluid extraction
Supercritical fluid chromatography is very similar to high pressure liquid chromatography (HPLC), however the mobile phase exists in a supercritical state. To refresh your memory, recall that super critical fluids exist at temperatures and pressures higher than a substances critical point. This means that the fluid acts as both a gas and a liquid. For example, a supercritical fluid may pass through substances like a gas, but also dissolve substances like a liquid. Why do supercritical fluids exist? Well, the temperature is high enough that the molecules cannot exist together as a fluid because they have too much energy to stick together. However, the pressure is too high for the molecules to have a root mean square distance sufficient enough to exist as a gas. SFC exploits this property, using a supercritical fluid to dissolve the chemical in question into the fluid, but move it quickly in the gas phase. Heavy molecules travel slower, while light molecules travel faster, thus causing separation. In addition, chiral molecules can be separated via this method.
solid, liquid, gas, supercritical fluid
W. K. Tolley has written: 'Supercritical CO b2 s solubility of TiCl b4 s' -- subject(s): Carbon dioxide, Supercritical fluid extraction, Titanium tetrachloride