Chromatographic investigation of multicomponent gas-solid adsorption systems

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5563629

Hyver, K J

Single component and binary gas-solid adsorption isotherms on graphitized carbon black were measured by mass spectrometric tracer pulse (MSTP) chromatography. The primary objective was to investigate the feasibility of using an adsorbable organic vapor as a component of the mobile phase in order to change the selectivity in gas chromatography. Since most of the previous research in this area has been empirical, the current work was an attempt to quantitatively determine the effect of surface coverage of the adsorbed modifier on the retention properties of various solutes at infinite dilution. Adsorption isotherms of binary mixtures of benzene and acetone on graphitized carbon black were measured with MSTP chromatography. Acetone was observed to have little effect upon the adsorption of benzene. However, the adsorption of acetone was significantly poisoned by the presence of adsorbed benzene. The effect of the binary carrier vapor on the retention volume of elution solutes was also determined. Knowledge of the surface composition, in addition to total surface coverage, was critical for accurate interpretation of the retention volume data. Mass spectrometric tracer pulse chromatography was shown to be a fast, reliable method for the investigation of multicomponent systems. No restrictions were placed upon the number or nature of the gas phase components. Limitations of constant total pressure or constant vapor phase composition were eliminated in the study of binary adsorption systems. This method was demonstrated to be very accurate by comparison to literature data.

• OSTI ID: 5563629
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ACETONE
ADSORBENTS
ADSORPTION
ADSORPTION ISOTHERMS
AROMATICS
BENZENE
BINARY MIXTURES
CARBON
CARBON BLACK
CHEMICAL ANALYSIS
CHROMATOGRAPHY
DATA
DISPERSIONS
ELEMENTS
ELUTRIATION
EXPERIMENTAL DATA
FLUIDS
GAS CHROMATOGRAPHY
GASES
HYDROCARBONS
INFORMATION
ISOTHERMS
KETONES
MIXTURES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PERFORMANCE TESTING
PULSE TECHNIQUES
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLUTES
SORPTION
SURFACE PROPERTIES
TESTING
VAPORS