At room temperature, what pressure must be applied to hydrogen in order for it to become liquid?
Thread Content
At room temperature, what pressure must be applied to hydrogen in order for it to become liquid?
The critical temperature of hydrogen is around 240°C; above this temperature, it cannot be liquefied no matter how much compression is applied
Our company has hydrogen compression equipment; at room temperature, hydrogen can be pressurized to 18 MPa without liquefying, and the hydrogen compressors are capable of reaching pressures of up to 21 MPa, which indicates that liquefaction does not occur at such pressures either. As for the exact level of pressure required, there are no data available, but one thing is certain: liquefaction is possible; otherwise, hydrogen bombs would not have been created.
A hydrogen bomb refers to the nuclear fusion of the isotopes of hydrogen, namely deuterium and tritium atoms, which releases enormous amounts of energy; however, I’m not sure whether it is in liquid form. I always thought it was a liquid; it seems I was wrong. Please correct me. @laoma0413
If liquefied hydrogen (protium deuterium tritium) is used as the raw material, large-scale refrigeration equipment is required; therefore, lithium deuteride, which is in a solid state, is used
The critical temperature of hydrogen is around -240 degrees Celsius, so it does not liquefy when compressed at room temperature
The nuclear explosive used for fusion in hydrogen bombs is lithium deuteride or lithium tritide, and it is a solid. Gaseous hydrogen isotopes do not reach the concentration required for fusion; therefore, solid lithium compounds of deuterium or tritium must be used, with deuterium being the common choice due to its slow decay rate, which reduces the maintenance requirements for nuclear bombs.
If hydrogen does indeed have such a high critical temperature, is it then easy to liquefy hydrogen?
Above its critical temperature, hydrogen will not liquefy no matter how much pressure is applied; it will at most reach a supercritical state.
Minus 240 degrees Celsius, wrong input