Essa Ismaeil Ahmed

Essa Ismaeil Ahmed
Salahaddin University-Erbil | SUH · Department of Chemistry

Doctor of Engineering

About

10
Publications
5,178
Reads
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575
Citations
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
Salahaddin University-Erbil
Position
  • Lecturer

Publications

Publications (10)
Article
Full-text available
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...
Article
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...
Conference Paper
Full-text available
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 +...
Conference Paper
Full-text available
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...
Article
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...
Article
Full-text available
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.
Article
Full-text available
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...
Article
Full-text available
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...
Poster
Full-text available
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...
Poster
Full-text available
Deepeutecticsolvents(DESs)havebeenshowntohavephysicalpropertieswhichwouldmakethemusefulaslubricants.Theliquidshavehighviscosityindexes,goodthermalstabilityandareenvironmentallycompatible.ToascertaintheapplicabilityofDESsaslubricantsitisimportanttocharacterisetheircompatibilitywithvariousmetals.CorrosionstudiesofFe,AlandNiinfourliquidsweremeasuredus...

Questions

Questions (3)
Question
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?
Question
If stirring has effect on corrosion, then how does it exactly?
Question
How can I calculate corrossion rate in impedance spectrums because I measured impedance spectrums but I do not know how corrosion rate is calculated

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