Adsorption of asphalt functionalities and oxidized asphalts on aggregate surfaces
- Auburn Univ., AL (USA). Dept. of Chemical Engineering
The adsorption of asphalt functionalities and asphalt oxidized to different degrees on real and model aggregates is investigated. The functionalities used are: nitrogen-base, phenolic, carboxylic acid, ester, ketone, sulfoxide, and polynuclear aromatic. Adsorption isotherms of these functionalities on porous silica show different affinity rankings dependent upon concentration. The competitive affinity ranking of the asphalt functionalities on dried silica is obtained. Asphalts oxidized to different degrees become adsorbed on different aggregates. On silica and alumina, the oxidized asphalts with viscosities of 32,000 and 126,000 poise are adsorbed less than AC-20. On limestone and sandstone, the adsorption of AC-20 and oxidized asphalts is concentration dependent; asphaltene adsorption followed the same trends.
- OSTI ID:
- 5263201
- Journal Information:
- Fuel Science and Technology International; (USA), Journal Name: Fuel Science and Technology International; (USA) Vol. 7:9; ISSN 0884-3759; ISSN FSCTE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360603* -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ADSORPTION
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ASPHALTENES
ASPHALTS
BITUMENS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
ISOTHERMAL PROCESSES
LIMESTONE
MINERALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SURFACES
TAR