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Full Description
The investigative assault upon the enigmatic asphaltenes has recently resulted in sig nificant advances in many varied disciplines. Taken individually, each discipline exposes certain facets of asphaltenes, but each, alone, can never reveal asphaltenes from all van tages. Even seemingly narrowly focused issues such as the molecular structures of asphal tenes, or the colloidal structures of asphaltenes require a confluence of many lines of investigation to yield an understanding which differs from truth by diminishing uncer tainty. An holistic treatment of the asphaltenes is a powerful approach to evolve further their understanding. For example, examination of asphaltenes at the highest resolution yields molecular structure. A slight increase in scale probes asphaltene colloidal structure. Weaving together asphaltene studies performed at different length scales results in a fabric which envelops an encompassing vision of asphaltenes. At the same time, the interfaces of these hierarchical studies provide additional constraints on imagination, more than investi gations at individual length scales alone. These considerations shaped the timing, format, and the content of our book. The editors are very appreciative of the diligence and hard work manifest in each of the contributed chapters herein. We thank the contributing authors for making this project a success. Oliver C. Mullins Eric Y. Sheu vii CONTENTS I. Asphaltenes: Types and Sources ...................................... .
Contents
I. Asphaltenes: Types and Sources.- II. Optical Interrogation of Aromatic Moieties in Crude Oils and Asphaltenes.- III. Molecular Structure and Intermolecular Interaction of Asphaltenes by FT-IR, NMR, EPR.- IV. Self-Association of Asphaltenes: Structure and Molecular Packing.- V. Colloidal Structural Evolution from Stable to Flocculated State of Asphaltene Solutions and Heavy Crudes.- VI. Molecular and Colloidal Structure of Coal Asphaltenes and Other Heavy Solvent Soluble Components.- VII. Characterization and Phase Behavior of Asphaltenic Crude Oils.- VIII. Conductivity of Asphaltenes.- IX. A New Suspension Viscosity Model and Its Application to Asphaltene Association Thermodynamics and Structures.- X. Characterization of Asphaltenes and Heavy Oils Using Hydrodynamic Property Measurements.- XI. Asphaltene and Resin Stabilized Crude Oil Emulsions: Experimental Characterization and Destabilization.- XII. The Role of Petroleum Asphaltenes in the Stabilization of Water-in-Oil Emulsions.
