Deduction of isosteric heats of adsorption from constant volume experiments

Journal Article · Thu Aug 09 04:00:00 EDT 1979 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100479a013· OSTI ID:6917196

Ruckenstein, E

The isosteric heat of oxygen adsorption was calculated for 2:1, 1:1, and 2:3 bismuth molybdate by a modified Clausius-Clapeyron equation which accounted for the constraint imposed by a closed volume, and by a newly developed kinetic equation which described the pressure buildup as a function of time when the catalyst is depleted of oxygen by heating in a closed vessel. The experiments were performed at 518/sup 0/ and 653/sup 0/K. The isosteric heats of adsorption were 8.38 kcal/mole for the 2:1, 11.34 kcal/mole for the 1:1, and 16.72 kcal/mole for the 2:3 bismuth molybdate.

• Research Organization: State Univ. N.Y. Buffalo
• OSTI ID: 6917196
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 83:16; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION HEAT
BISMUTH
CATALYSTS
DATA
ELEMENTS
ENTHALPY
EQUATIONS
EXPERIMENTAL DATA
HIGH TEMPERATURE
INFORMATION
KINETIC EQUATIONS
METALS
MOLYBDATES
MOLYBDENUM COMPOUNDS
NONMETALS
NUMERICAL DATA
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRESSURE GRADIENTS
QUANTITY RATIO
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VOLUME