In an optical high--pressure autoclave with saphire windows and magnetic stirring, phase equilibria data in mixtures of water-n--butane and water-iso--butane were measured in a temperature range from 500K to 600K and ...In an optical high--pressure autoclave with saphire windows and magnetic stirring, phase equilibria data in mixtures of water-n--butane and water-iso--butane were measured in a temperature range from 500K to 600K and at a pressure from 10MPa to 300MPa. The critical curves of these systems start at the critical point of pure water and tend to higher pressures and lower temperatures. These curves pass a temperature minima 624K and 625K respectively and then tend to a high temperature and pressure. Excess volumes on the phase equilibria surface were given. The results are discussed in view of the phase equilibria of other water--n--alkane systems.展开更多
文摘In an optical high--pressure autoclave with saphire windows and magnetic stirring, phase equilibria data in mixtures of water-n--butane and water-iso--butane were measured in a temperature range from 500K to 600K and at a pressure from 10MPa to 300MPa. The critical curves of these systems start at the critical point of pure water and tend to higher pressures and lower temperatures. These curves pass a temperature minima 624K and 625K respectively and then tend to a high temperature and pressure. Excess volumes on the phase equilibria surface were given. The results are discussed in view of the phase equilibria of other water--n--alkane systems.
