V. K. Korolev, E. S. Iskandarova, A. V. Kosach, R. Z. Safieva
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引用次数: 0
Abstract
The effects of two different synthetic dispersants were characterized using two independent optical methods. The study examined their impact on both the aggregation of asphaltenes (isolated from various crude oils using a standard procedure) and the stability of model asphaltene-containing dispersions. In the model n-heptane/toluene medium, the two dispersants had markedly different effects on asphaltene aggregation and dispersion stability. One dispersant failed to disperse asphaltenes because it self-associated into large micelles (≥100 nm in radius) in the n-heptane medium, thereby destabilizing the system. Consequently, a key design criterion for future dispersants and stabilizers should be a molecular structure that minimizes self-association in nonpolar media while maximizing affinity for asphaltenes.
期刊介绍:
Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas.
Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.