Abstract
Vapor pressures of the hydrogen getter 1,4 bis(phenylethynyl)benzene (DEB), together with two of its derivatives namely DEB mixed with carbon-supported Pd (DEB–Pd/C) and hydrogenated DEB–Pd/C, are measured from room temperature to the melting temperature (179°C). The corresponding thermodynamic information, such as the enthalpy of vaporization, boiling point, and the deviation from ideal solution behavior of DEB–Pd/C, has been derived from the vapor pressure–temperature relationships. In addition, the hydrogenation kinetics of DEB–Pd/C (powder form and rod-like) has also been investigated at a fixed pressure of 13.3 Pa (0.1 Torr) and at four temperatures, 21°C, 35°C, 45°C and 55°C.
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