
Essa Ismaeil AhmedSalahaddin University-Erbil | SUH · Department of Chemistry
Essa Ismaeil Ahmed
Doctor of Engineering
About
10
Publications
5,178
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Introduction
Current research centres on the area of petroleum based and novel ionic environmentally compatible base lubricants.
The chemistry of petroleum and ionic based lubricants,
Fuel characterization,
Corrosion of metals in aqueous and in ionic based liquids
and Intermolecular forces in ionic liquids
Additional affiliations
November 2015 - present
Publications
Publications (10)
The removal of catalyst poisoning compounds from crude oil or heavy oil fractions improves the efficiency of oil refineries and reduces the cost of high temperature corrosion damage during combustion. In this study, the demetallization of crude oil examined using readily separable paramagnetic rust particles functionalized with acidic choline chlor...
Deep eutectic solvents (DESs) are mixtures of quaternary ammonium halides with hydrogen bond donors and are increasingly being used in applications where they are in contact with metals. This study investigates the corrosion of iron, nickel and aluminium in DESs. It shows that none of the metals show significant corrosion when glycerol is used as a...
Due to the difference in the ionic nature of mineral base oil and Deep Eutectic Solvents (DESs), corrosion studies of base lubricants based on DESs should be addressed while their lubrication studies are performed. The activation energy (Ea) of corrosion for iron are determined in Ethaline (ethylene glycol + choline chloride), Glyceline (glycerol +...
It has previously been shown that eutectic mixtures of quaternary ammonium salts and hydrogen bond donors form liquids with properties similar to ionic liquids [1; 2]. These so-called deep eutectic solvents (DESs) have been shown to have physical properties which would make them useful as base lubricants. The base lubricant needs to show specific p...
The amphiphilic nature of many pharmaceutical active ingredients often makes them difficult to solubilise and leads to significant wastage through non-optimal dosage. In this study it is shown that highly concentrated liquid formulations can be produced from pharmaceutical active ingredients which either contain a strong hydrogen bonding functional...
Correction for ‘Molecular and ionic diffusion in aqueous – deep eutectic solvent mixtures: probing inter-molecular interactions using PFG NMR’ by Carmine D'Agostino et al., Phys. Chem. Chem. Phys., 2015, 17, 15297–15304.
Pulsed field gradient (PFG) NMR has been used to probe self-diffusion of molecular and ionic species in aqueous mixtures of choline chloride (ChCl) based deep eutectic solvents (DESs), in order to elucidate the effect of water on motion and inter-molecular interactions between the different species in the mixtures, namely the Ch+ cation and hydroge...
Although mineral oils are commonly used as lubricants their emission particularly in marine environments can cause significant impact. In the current study the properties of water miscible deep eutectic solvents and ionic liquids are compared with a typical mineral base oil to ascertain their efficacy for potential marine lubricants. The environmen...
Mineral oils are commonly used for base lubricants but they have the disadvantage that when they are wet they exhibit enhanced corrosion and when emitted at sea they have environmental consequences. In this study Deep eutectic solvents are compared with base oils and shown to have enhanced thermophysical properties, corrosion resistance and wear re...
Deepeutecticsolvents(DESs)havebeenshowntohavephysicalpropertieswhichwouldmakethemusefulaslubricants.Theliquidshavehighviscosityindexes,goodthermalstabilityandareenvironmentallycompatible.ToascertaintheapplicabilityofDESsaslubricantsitisimportanttocharacterisetheircompatibilitywithvariousmetals.CorrosionstudiesofFe,AlandNiinfourliquidsweremeasuredus...
Questions
Questions (3)
I am studing a corrosion of some metals in some liquids however I don't know how to characterize corrosion products which form on the surface of metals in the liquid?
If stirring has effect on corrosion, then how does it exactly?
How can I calculate corrossion rate in impedance spectrums because I measured impedance spectrums but I do not know how corrosion rate is calculated