Influence of petroleum resins on colloidal stability of asphaltene-containing disperse systems

Murzakov, R. M.; Sabanenkov, S. A.; Syunyaev, Z. I.

doi:10.1007/bf00726261

Cited by 18 publications

(22 citation statements)

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“…However, the increase in the amount of precipitation was not expected and has not been reported in the literature, to the best of our knowledge. Previous studies (Murzakov et al, 1981;Lian et al, 1994) examined the effect of resins on solutions of asphaltenes in aromatic solvents. In this study, we examine the effect of additional resins on precipitation from petroleum fluids.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the effect of resins on asphaltene precipitation is usually assessed after asphaltenes have been precipitated from petroleum fluids and solubilized in aromatic solvents. Murzakov et al (1981) investigated the micellar stability of asphaltenes in benzene solutions by means of gravimetric sedimentation analysis and found that the addition of resins (2-8 wt. %) to the solution decreased the amount of asphaltene precipitated by n-C 7 .…”

Section: Introductionmentioning

confidence: 99%

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Effect of resins and DBSA on asphaltene precipitation from petroleum fluids

Goual

Firoozabadi

2004

AIChE Journal

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of resins and DBSA on asphaltene precipitation from petroleum fluids

Goual

Firoozabadi

2004

AIChE Journal

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“…However, the increase in the amount of precipitation was not expected and has not been reported in the literature, to the best of our knowledge. Previous studies (Murzakov et al, 1981; Lian et al, 1994) examined the effect of resins on solutions of asphaltenes in aromatic solvents. In this study, we examine the effect of additional resins on precipitation from petroleum fluids.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the effect of resins on asphaltene precipitation is usually assessed after asphaltenes have been precipitated from petroleum fluids and solubilized in aromatic solvents. Murzakov et al (1981) investigated the micellar stability of asphaltenes in benzene solutions by means of gravimetric sedimentation analysis and found that the addition of resins (2–8 wt. %) to the solution decreased the amount of asphaltene precipitated by n ‐C 7 .…”

Section: Introductionmentioning

confidence: 99%

Testing for order among K populations: theory and examples

Davidov

Herman

2009

Can J Statistics

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Testing for stochastic order among K populations is a common and important problem in statistical practice. It arises in the analysis of both planned experiments and observational studies. The authors develop a new nonparametric test for order among K populations that can accommodate any stochastic ordering. The test is based on a maximally selected chi‐bar‐square statistic. The authors find its limiting distribution and use simulations to derive critical values. Three important examples are used to illustrate the applicability of the general method. The authors find that the new tests outperform the existing methods in many practical cases. The Canadian Journal of Statistics 38: 97–115; 2010 © 2009 Statistical Society of Canada

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“…It directly affects the accumulation of asphaltenes in the dynamic gum in the system through adsorption on the asphaltene surface and the formation of a stable space alkyl chain layer to maintain the stability of the entire gum system. 4 − 8 The existent gum content in oil products is an important indicator of oil product evaluation. It has an important influence on the quality of gasoline and diesel products.…”

Section: Introductionmentioning

confidence: 99%

Structure Characterization and Solubility Analysis of the Existent Gum of the Fischer–Tropsch Synthetic Crude

et al. 2020

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The existent gum content of the Fisher–Tropsch synthetic crude exceeded the standard seriously, affecting its transportation and use. To determine the structure of the existent gum extracted from the Fisher–Tropsch synthetic crude, elemental analysis, Fourier transform infrared (FT-IR) spectroscopy, nuclear magnetic resonance (NMR), and X-ray photoelectron spectroscopy (XPS) were employed to determine the chemical structure of the gum. The Brown–Ladner method is used to calculate the average structural parameters and the average molecular formula of the existent gum. The results show that the existent gum of the Fisher–Tropsch synthetic crude is composed of heterocyclic aromatic hydrocarbons and short-carbon paraffins. Compared with petroleum gums and coal tar gums, the existent gum content of the Fisher–Tropsch synthetic crude has the characteristics of high aromaticity, short side chains, and nitrogen-containing heterocycles. After being oxidized, its aromaticity further increases, more closed loops are formed, and the side chain is further shortened. This is caused by a complex oxidation reaction during the oxidation process. Molecular dynamics simulation calculations were performed to reveal the T-stacked morphology of the existent gum of the Fisher–Tropsch synthetic crude in a mixed solvent of acetone and toluene.

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Influence of petroleum resins on colloidal stability of asphaltene-containing disperse systems

Cited by 18 publications

References 0 publications

Effect of resins and DBSA on asphaltene precipitation from petroleum fluids

Effect of resins and DBSA on asphaltene precipitation from petroleum fluids

Testing for order among K populations: theory and examples

Structure Characterization and Solubility Analysis of the Existent Gum of the Fischer–Tropsch Synthetic Crude

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