Study of some anionic surfactants as pour point depressants additives for a waxy gas oil

Khidr, T. T.; Azzam, E. M. S.; Mutawaa, Sahar S.; Omar, A. M. A.

doi:10.1108/00368790710731855

Cited by 12 publications

(8 citation statements)

References 12 publications

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“…Also table (2) shows the emulsion stability of ETH and ANS in seconds at 30C. The results confirm the compound ANS is more efficient than compound ETH at different volume of water.…”

Section: 114 Issn: 2349-6495(p) | 2456-1908(o)supporting

confidence: 62%

“…They have high solublization capacity for both hydrophilic and lipophlic compounds. Surfactants used are petroleum sulphonates and ethoxylated alcohol sulphates, The degree of interfacial tension lowering depends on the phase behaviour of the oil/water/surfactant mixture (1)(2)(3)(4). Some ester is widely used as lubricants and high performance industrial fluids.…”

Section: Introductionmentioning

confidence: 99%

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New Trend in Enhancement Quality and Pour Point of Waxy Gas Oil by Nanoemulsions Part-1

Mehbad¹

2016

IJAERS

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“…Also table (2) shows the emulsion stability of ETH and ANS in seconds at 30C. The results confirm the compound ANS is more efficient than compound ETH at different volume of water.…”

Section: 114 Issn: 2349-6495(p) | 2456-1908(o)supporting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

New Trend in Enhancement Quality and Pour Point of Waxy Gas Oil by Nanoemulsions Part-1

Mehbad¹

2016

IJAERS

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“…Many methods have been attempted for the prevention of the crystals mating together. Some anionic surfactants had been applied as pour point depressant by Omar et al [1]. It is found that the surface parameters and free energies of micellization and adsorption confirm the decreasing and improving of pour point.…”

Section: Introductionmentioning

confidence: 99%

Developments of Multifunctional Additives for High Quality Lube Oil

Mehbad¹

2013

JPEE

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In most lubrication systems, the oil is mixed with air, in contact with air, in contact with metals and at high temperature. This is mean cause of premature lubricant, deterioration which can result in oxidation products, which are mainly acid. Hydrocarbon oxidation in the liquid phase proceeds by a radical chain reaction. In the present paper polyalkylphenol formaldehyde sulphonate and its ethoxylate were synthesized and evaluated as pour point depressant, viscosity improver and antioxidant. The efficiency of these additives depends on their chemical structure and degree of mixing (mole fraction). Values of surface tension of these additives were measured in oil phase and consequently CMC was determined for all additives and their mixtures. A novel method of inhibiting oxidation was proposed. The author suggests the mechanism of inhibiting oxidation according to surface activity of additive in oil phase. More confirmations for suggested mechanism were investigated by measuring the area occupied per molecule of additive at oil phase. The results indicate that the compatibility of sulphonate with ethoxylate group and forming stable micelle which acts as wax dispersant and improver viscosity.

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“…The purified sample was chloromethylated in presence of zinc chloride and phase transfere catalyst and purification chloromethylated aromatic and condensed with a stoichiometric amount of triethanol amine according to Omar et al [6][7][8][9][10]. The product was condensed with ethylene oxide to produce the polyaromatic benzyl trie- thanolamonium ethoxylate with 6 ethylene oxide units (BS).…”

Section: Synthesis Of the Additivesmentioning

confidence: 99%

Development of Anti-Wear/Antioxidant Additives for High Quality Metalworking Fluid from Waste Petroleum Products

Mehbad¹,

Omar²

2014

JSEMAT

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Surfactants are used for formulation metal working fluids. These fluids are applied to the interface between a cutting tool and the metal working piece to provide friction reduction. In the present paper, poly aromatic ammonium sulphonate and polyaromatic benzyl triethanolamsonium ethoxylate with 6 ethylene oxide units were synthesized and blended with coupling agent like dodecyl alcohol and oleic acid to produce cutting fluid and evaluate as antiwear. Values of surface tension of these additives were measured in oil phase and consequently CMC was determined for all additives and their mixtures in oil phase. The efficiency of these additives depends on their chemical structure and the presence of ether oxygen brings about the association of the surfactant with metal surface, hence very good wetting properties. The antiwear characteristic of surfactants increases with increasing polar linkages in the aromatic moieties forming chelated and coordinated layer. This is due to the increase in the number of sites to chemisorption on the metal surface. The films formed are highly condensed ring aromatic layered structures. These films provide lower wear and depend on the type of surfactants concentration and sliding speed. The surface of metal was analyzed by SEM/EDX techniques. These studies have led to much clear evidence of the intimate relationship between the chemical structure of the surfactants and their film forming. More confirmation for suggested mechanism was investigated by measuring the area occupied per molecule of the surfactant in oil phase. The results indicate that the sulphonate group is less efficient than ethoxylate group. At the same time, the micelle of surfactants acts as oil dispersant and improves adsorption of oil on the metal surface.

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Study of some anionic surfactants as pour point depressants additives for a waxy gas oil

Cited by 12 publications

References 12 publications

New Trend in Enhancement Quality and Pour Point of Waxy Gas Oil by Nanoemulsions Part-1

New Trend in Enhancement Quality and Pour Point of Waxy Gas Oil by Nanoemulsions Part-1

Developments of Multifunctional Additives for High Quality Lube Oil

Development of Anti-Wear/Antioxidant Additives for High Quality Metalworking Fluid from Waste Petroleum Products

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