Sulfur chemical structures present in crude oil products such as petroleum asphaltenes, resins, and maltenes obtained from two different oils have been determined using X-ray absorption nearedge structure (XANES) spectroscopy. Maltenes are pentane soluble portions, resins are pentane insoluble and heptane soluble portions, and asphaltenes are heptane insoluble portions of crude oil. The sulfur ...

in this investigation, the mechanical properties of the blends of blown bitumen110/10, heavy vacuum slops (h.v.s), bitumen 60/70 penetration grade and isotactic polypropylene (ipp) were studied for the first time. our results showed that modulus varies non-linearly and at certain asphaltenes contents a peak appears. considering these phenomena it is revealed that in the absence of ipp, interact...

The aggregation behavior of asphaltene in the toluene-hexane mixture is systematically investigated using experimental techniques such as optical microscopy and Fourier-transform infrared spectroscopy (FTIR) combined with molecular dynamics (MD) simulations. images various concentrations are processed to determine size aggregates. FTIR performed within our work order understand formation aggreg...

The processes in which crude oil asphaltene aggregates are adsorbed onto surfaces have been the subject of debate recent years. Different thermodynamic, theoretical, and empirical models be...

'Solids formed from coprocessing of 10% coal/90% resid were characterized by solvent extraction, elemental analyses, C'3/C'z isotope ratio, ESR, and GPC techniques. adsorbed petroleum-derived material (oil, resin, asphaltene). The THF insolubles in the product contained high oxygen, low vanadium and a higher level of polyaromatic radicals than the soluble fraction, indicating that these insolub...

a new chemical compound is developed at petroleum university of technology to enhance therecovery of the free imbibition process and simultaneously hinder asphaltene precipitation. thecompound is tested on heavy oil samples from marun oil field, bangestan reservoir. the effects ofthe chemical compound on viscosity, hydrocarbon composition, and average molecular weight ofthe heavy oil are invest...