Production of valuable chemicals from furfural through hydrotreatment requires information of hydrogen solubility in furfural and the most often applied solvent, 2-propanol. This study investigates hydrogen solubility in furfural and 2-propanol at the temperature range of 323-476 K and pressure range up to 12.5 MPa. The measured data are compared to prediction with Soave-Redlich-Kwong, Peng-Robinson, and Perturbed-Chain Statistically Associating Fluid Theory (PC-SAFT) equations of state. The most accurate prediction of hydrogen solubility in furfural and 2-propanol was obtained with PC-SAFT.
Mercury has been applied as a sealing
and pressure transmission
fluid in many experimental phase equilibrium studies employing the
synthetic visual method as well as a moving piston in analytical isobaric
and/or isothermal methods. However, mercury is highly toxic and therefore
its use is restricted by authorities such as those of the European
Union. A new apparatus employing nontoxic GaInSn liquid metal alloy
as a sealing, moving piston, and pressure transmission fluid for phase
equilibrium measurements with a nonvisual variable volume method is
presented. The vapor pressures of toluene, hexylbenzene, and 2-ethylnaphtalene
are provided within the applied temperature range of 400–620
K. New values for the parameters of the DIPPR 101 and Wagner equations,
and PC-SAFT equation of state were regressed. The results demonstrate
that GaInSn can be used in phase equilibrium cells as a very convenient
substitute for mercury, especially at high temperatures.
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