Current Issue : January - March Volume : 2021 Issue Number : 1 Articles : 5 Articles
Synthetic paraffinic kerosene (SPK) is an ultra-clean fuel with low aromatic content and negligible quantities of\nsulfur compounds. Although, SPK has a good potential to replace the conventional fuel Jet A-1, it also has some\ndeficiencies. One of them is the low lubricity compared to its conventional counterpart Jet A-1. To improve the\nlubricity of SPK, three selected additives have been mixed with SPK at different concentrations. The lubricity of the\nsamples was determined experimentally and the samples that meet the industry specifications have been studied\nfurther. The effect of the additives on the physicochemical properties, such as, density, flash point, freezing point,\nviscosity, and heat content, were investigated. Linoleic acid was found to be an excellent lubricity improver even at\na very low concentration and its negative impact on the other physicochemical properties was found to be\ninsignificant. Ethyl oleate also demonstrated significant improvement in lubricity at low concentrations but had a\nnegative impact on the fuelâ??s freezing point at high concentrations. Quinoline, at high concentrations, elevated the\nblendâ??s freezing point above the acceptable limits. In parallel to the experimental campaign, a pre-existing\nmathematical modelling tool was utilized to predict the properties of interest....
Cuprous oxide (Cu2O) in high yield with controlled shape and size was synthesized\nvia a solution-phase route by reducing cupric sulphate with\nD-glucose. The solution pH shows strong effects on the size and morphology\nof the products. The products were characterized by X-ray power diffraction\n(XRD) and Scanning electron microscope (SEM). The infrared emissivity of\nCu2O was tested by Far infrared emissivity measurer S302. The possible crystal\ngrowth processes have been proposed....
The simulation of a process plant for the production of propylene has been\nconsidered in this work. The reactor used for this research was a Continuous\nStirred Tank Reactor (CSTR) which was deliberately picked because of the\nadvantage of good temperature and reaction control. Other equipment includes\na compressor, conversion reactor, cooler and splitter. Sizing was done\nfor all equipment but detailed design was carried out for the CSTR since itâ??s\nthe heart of the process plant. The principle of conservation of mass was applied\nfor the development of basic design performance equations for the volume,\nthe height, space time, space velocity and heat generated per unit volume\nat 90% conversion of propane to propylene. Aspen Hysys which is known\nfor its reliability in chemical engineering process design was used to simulate\nthe process plant and was used for all calculations and sizing of process equipment....
Three molecules containing morpholine, 1,4-naphthoquinone, 7-chloroquinoline\nand 1,3,5-triazine cores, scaffolds with recognized anti-corrosive activity, were\nsynthesized and had their anticorrosive activity evaluated through potentiodynamic\npolarization and electrochemical impedance studies...............................
The phase pure Copper Ferrite, Zinc Ferrite, and Nickel Ferrite were prepared\nfrom oxides of Ni, Cu, Zn, and Fe using traditional ceramic method.\nX-ray diffraction data were collected and the formation of the spinal phase\nstructure was found. ..............
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