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Synthesis and Evaluation of Lubricating Oil Additives for Detergency, Oxidation Stability and Viscosity Index Improvement

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30/10/2014 12:30 PM

Synthesis and Evaluation of Lubricating Oil Additives for Detergency, Oxidation Stability and Viscosity Index Improvement



Prof. Dr. Abdul Haleem Abdul Kareem Mohammad / university of Baghdad – college of engineering – department of chemical engineering
Prof. Dr. Mohammad Rifat Ahmed / university of Baghdad – college of science – department of chemistry
Associate Dr. Zainab Abdul Zahra khudair Al-Masri / university of Baghdad – college of science – department of chemistry
Senior engineer Salah Mehdi Ali Hassan / oil research and development center / ministry of oil


ABSTRACT

  In this invention a preparation of overbased detergents cleaners derived from Palmitic and Stearic from the interaction of these two acids with effective magnesium oxide and carbon dioxide by 60 ° c in the presence of ammonia as a helper and ethanol (1: 9) as a solvent. Total base number TBN was measured for these two cleaners and the value of the liquidators TBN to composite overbased magnesium palmitate was equivalent to (346 mg KOH/g oil) while for the composite magnesium stearate are overbased (420 mg KOH/g oil). It also evaluated the prepared detergent by mixing all the cleaners in between (1-5% wt/wt) with base oil (60 stock) provider of refineries company centre, Baghdad, Iraq and the overbased number and viscosity were selected at 40 Celsius and 100 degree Celsius according to viscosity index VI. Oils mixed with prepared (2% wt/wt) in concentration showed high stability towards oxidation in comparison with a standard antioxidant used in the company of central refineries for commercial oil production.

   

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