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Abstract  

The increasing application of biobased lubricants could significantly reduce environmental pollution and contribute to the replacement of petroleum base oils. Vegetable oils are recognized as rapidly biodegradable and are thus promising candidates for use as base fluids in formulation of environment friendly lubricants. Although many vegetable oils have excellent lubricity, they often have poor oxidation and low temperature stability. Here in, we report the lubricant potential of Moringa oil, which has 74% oleic acid content and thus possess improved oxidation stability over many other natural oils. For comparison, Jatropha oil, cottonseed oil, canola oil and sunflower oil were also studied. Among these oils, Moringa oil exhibits the highest thermo-oxidative stability measured using PDSC and TG. Canola oil demonstrated superior low temperature stability as measured using cryogenic DSC, pour point and cloud point measurements. The friction and wear properties were measured using HFRR. Overall, it was concluded that Moringa oil has potential in formulation of industrial fluids for high temperature applications.

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Biodiesels from beef tallow/soybean oil/babassu oil blends

Correlation between fluid dynamic properties and TMDSC data

Journal of Thermal Analysis and Calorimetry
Authors: G. A. A. Teixeira, A. S. Maia, I. M. G. Santos, A. L. Souza, A. G. Souza, and N. Queiroz

assessing all the aspects of the biodiesel quality, several specifications determine the limits for low-temperature biodiesel tests, such as cloud point, CP, (EN 23 015, ASTM D-2500), pour point, PP, (ASTM D-1997, ASTM D-5949), and cold filter plugging point

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Abstract  

Thermal characteristics of eight crude oils and their treatment with additives were studied by differential scanning calorimetry (DSC), thermomicroscopy, viscometer and pour point tester. Different additives were found as more effective for different type of crude oils depending on the wax content. Crude oils showed a reduced pour point after treatment with additives. Effects of different additives were also discussed by analysing the DSC curves and thermomicroscopy result.

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CFPP∗∗/°C 7.0 11.0 4.0 5.0 19 (Máx.) ASTM Pour point/°C 3

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Abstract  

In this research, differential scanning calorimetry (DSC) and gas chromatography is used to determine the wax content of fourteen crude oils of different sources. Different empirical equations were applied to compare the wax content of crude oils. For the fourteen crude oil samples with the wax content ranging from 7.5 to 43.8 mass%, it was observed that the results of empirical equations were in good agreement with those determined by DSC and GC. Accordingly, a correlation between ASTM pour point and the temperature at which 2 mass% of wax has precipitated out from crude oil is developed.

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International Review of Applied Sciences and Engineering
Authors: Adebayo Surajudeen Adekunle, Adekunle Akanni Adeleke, Peter Pelumi Ikubanni, Peter Olorunleke Omoniyi, Tajudeen Adelani Gbadamosi, and Jamiu Kolawole Odusote

value, flash point, pour point, and free fatty acid were analyzed in accordance to International Standard. 2.3 Casting of Al-alloy rods Al-alloy rods were produced using sand casting method to obtain 15 mm diameter cast cylindrical rods and then machined

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to ASTM D 6371 with equipment model AFP-102 Tanaka. The CP and pour point were determined, respectively, according to the rules ASTMD 2500 and ASTM D 1997 with equipment MPC-102L Tanaka. The CI was calculated by relating the rates

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Journal of Thermal Analysis and Calorimetry
Authors: Javier A. Díaz-Ponce, Eugenio A. Flores, Alfonso Lopez-Ortega, Jose G. Hernández-Cortez, Arquimides Estrada, Laura V. Castro, and Flavio Vazquez

.15 Pour point/°C −45.0 −36.0 −20.0 Wax content/wt% 3.10 4.02 4

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Journal of Thermal Analysis and Calorimetry
Authors: Francisco J. N. Maia, Viviane G. Ribeiro, Claudenilson S. Clemente, Diego Lomonaco, Pedro H. M. Vasconcelos, and Selma E. Mazzetto

by closed-ring saturated hydrocarbons; possess lower viscosity, lower flash point, lower pour point, and lower resistance to oxidation. Owing to these properties, naphthenic mineral oils are generally used in process with narrow temperature ranges and

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Journal of Thermal Analysis and Calorimetry
Authors: N. A. Santos, R. Rosenhaim, M. B. Dantas, T. C. Bicudo, E. H. S. Cavalcanti, A. K. Barro, I. M. G. Santos, and A. G. Souza

been used during sample cooling to evaluate the effect of low temperatures on biodiesel properties [ 6 ]. DSC is a more rigorous and efficient method to study crystallization temperature than that of traditional methods (cloud point, pour point, and

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