Chemistry: analytical and immunological testing – Lubricant – grease – mineral oil – hydrocarbon oil product – or...
Patent
1990-10-26
1992-12-08
Housel, James C.
Chemistry: analytical and immunological testing
Lubricant, grease, mineral oil, hydrocarbon oil product, or...
436 83, 436173, 324316, 324317, G01N 2410
Patent
active
051697858
ABSTRACT:
Vanadium in marine diesel lubricating oils resulting from raw fuel dilution is detected and quantified by way of an analytical technique employing electron spin resonance (ESR). Dilution of the lubricating oil with residual fuel oils results in the presence of vanadium in the lubricating oil in a form which is capable of being observed by ESR; by contrast, vanadium resulting from the presence of fuel oil combustion products (pentavalent vanadium) in the lubricating oil is not observed by ESR. The method therefore enables fuel vanadium, typically present as vanadyl porphyrins, to be differentiated from vanadium resulting from blow-by in the engine so that the operating condition of the engine may be monitored.
REFERENCES:
patent: 3087888 (1963-04-01), Saraceno
patent: 4777140 (1988-10-01), Rudnick
Nov-85:016192; Moriya-cho et al., "The Characteristics of Metal Complexes Before and After Hydrotreating", Am. Chem. Soc. Div. Pet. Chem. Prepr. (United States) v. 31:2 Apr. 1986, pp. 597-605.
CLA-90: 040802; "ESR Characterization of Phenalenyl Radicals in Various Fuel Samples"; Fuel (UK) v. 69:2 Feb. 1990, pp. 203-206.
Nasirov et al.; "Study and Isolation of Vanadylporphyrins from Petroleums of the Buzachi Peninsula"; Khim. Prir. Soedin. (3) pp. 389-392.
Malhotra et al.; "34 GHZ EPR Study of Vanadyl Complexes in Various Asphallenes, Statistical Correlative Model of the Coordinating Liquids"; Fuel 64(3) pp. 335-341.
Galambos et al.; "ESR Spectra of Vanadium Complexes in Oils"; Magy. Kem. Foly. 79(8) 364-6.
"Association of Vanadium Chelates in Petroleum Asphaltenes as Studied by ESR", Tynan and Yen, Fuel, 48, 191 (1969).
"An Electron Paramagnetic Resonance Investigation of Vanadium in Petroleum Oils", Saraceno, Fanale and Coggeshall, Anal. Chem. 33, 500 (1961).
Altman Lawrence J.
Reischman Paul T.
Housel James C.
Keen Malcolm D.
McKillop Alexander J.
Mobil Oil Corporation
Snay Jeffrey R.
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