HEAT OF ADSORPTION OF PARAHYDROGEN AND ORTHODEUTERIUM ON GRAPHON

Journal Article · Tue Sep 01 04:00:00 EDT 1959 · Journal of Physical Chemistry (U.S.)

DOI:https://doi.org/10.1021/j150579a014· OSTI ID:4198795

Pace, E L; Siebert, A R

An experimental investigation of the differential and isosteric heats of adsorption for parahydrogen and orthodeuterium adsorbed on graphon has been carried out in the neighborhood of the normal boiling points of the gases by the use of conventional low temperatare calorimetric procedures. Assuming the interaction of an isolated molecule of the gas with a surface having the structure and parameters of graphite, good agreement is obtained between the computed and experimental values of the heat of adsorption at low coverages. The larger heat of adsorption of deuterium as compared to that of hydrogen is reasonably explained by the difference in the zero point energies associated with the degree of freedom perpendicular to the adsorbent surface. (auth)

• Research Organization: Western Reserve Univ., Cleveland
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-000135
• OSTI ID: 4198795
• Journal Information: Journal of Physical Chemistry (U.S.), Journal Name: Journal of Physical Chemistry (U.S.) Vol. Vol: 63; ISSN JPCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ADSORPTION
BOILING
CALORIMETERS
CHEMISTRY
DEUTERIUM
DEUTERIUM-ORTHO
GASES
GRAPHITE
HEATING
HYDROGEN
HYDROGEN-PARA
INTERACTIONS
ISOMERS
LOW TEMPERATURE
MOLECULES
OXIDES
SURFACES