Counterdiffusion of liquid hydrocarbon pairs in ion-exchanged forms of zeolite X

Journal Article · Wed Jan 01 00:00:00 EST 1986 · Sep. Sci. Technol.; (United States)

DOI:https://doi.org/10.1080/01496398608056131· OSTI ID:5582960

Culfaz, A; Erguen, G

Adsorptive counterdiffusion rates of liquid benzene, ethyl benzene, 1,3,5-trimethyl benzene, and 1-methyl naphthalene into Na/sup +/, K/sup +/, Cs/sup +/, and Ca/sup 2 +/ ion exchanged forms of zeolite X saturated with cyclohexane were measured. The diffusivity of the adsorbing hydrocarbon decreases as the effective pore size of the zeolite is decreased by ion exchange. The effective pore size in CaX and CsX was so small as not to allow the adsorptive counterdiffusion of 1,3,5-trimethyl benzene and 1-methyl naphthalene. Diffusion took place only after the cations in the pore mouths were displaced to other cation sites in the structure under the influence of the adsorbing hydrocarbon molecules, and thus the rate of counterdiffusion appeared to increase with time.

• Research Organization: Middle East Technical Univ., Ankara, Turkey
• OSTI ID: 5582960
• Journal Information: Sep. Sci. Technol.; (United States), Vol. 21:5
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
02 PETROLEUM
BENZENE
ADSORPTION
DIFFUSION
CALCIUM COMPOUNDS
ION EXCHANGE
SORPTIVE PROPERTIES
CESIUM COMPOUNDS
CYCLOHEXANE
NAPHTHALENE
POTASSIUM COMPOUNDS
SODIUM COMPOUNDS
ZEOLITES
CATALYSTS
CATIONS
CHEMICAL REACTION KINETICS
EXPERIMENTAL DATA
HYDROCARBONS
POROSITY
TIME DEPENDENCE
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKANES
AROMATICS
CHARGED PARTICLES
CONDENSED AROMATICS
CYCLOALKANES
DATA
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IONS
KINETICS
MATERIALS
MINERALS
NUMERICAL DATA
ORGANIC COMPOUNDS
REACTION KINETICS
SORPTION
SURFACE PROPERTIES
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
020400 - Petroleum- Processing