Neutralization of highly acidic crude oil utilizing 2-methylimidazole in polyethylene glycol solution / Norshahidatul Akmar Mohd Shohaimi and Nur Syafiqah Afiqah Ishak

Mohd Shohaimi, Norshahidatul Akmar and Ishak, Nur Syafiqah Afiqah (2020) Neutralization of highly acidic crude oil utilizing 2-methylimidazole in polyethylene glycol solution / Norshahidatul Akmar Mohd Shohaimi and Nur Syafiqah Afiqah Ishak. Gading Journal for Science and Technology, 3 (1). pp. 82-90. ISSN 2637-0018

Abstract

The naphthenic acids (NA) compound occurs naturally in the acidic crude oil and lead to
corrosion problem in the oil refinery. Various methods can be used to reduce the NAs
concentration in acidic petroleum crude such as catalytic decarboxylation, dilution or caustic
washing but all these methods have its own weaknesses. The main objective of this study is to
reduce total acid number (TAN) value of crude oil through neutralization process using catalyst
and reagents. The parameters studied were catalysts calcination temperature, catalyst loading
and reagent concentration. The acid removal agent used was a mixture of 10% 2-
methylimidazole in polyethylene glycol (PEG) with reagent concentration of 100, 500, 1000
and 1500 ppm. Calcium was chosen as a base for the catalyst while Cu and Ni were used as a
dopant. The potential catalyst was characterized by FTIR and TGA-DTG for its physical and
chemical characteristics. Catalyst with calcination temperature of 1000C, 7 beads of catalyst
loading, 500 ppm of 2-methylimidazole in PEG, reaction temperature (35C) and 5 minutes
reaction times showed 97% deduction of TAN value from 3.93 to 0.13 mg KOH/g.

Metadata

Item Type: Article
Creators:
Creators
Email / ID Num.
Mohd Shohaimi, Norshahidatul Akmar
akmarshohaimi@uitm.edu.my
Ishak, Nur Syafiqah Afiqah
UNSPECIFIED
Subjects: Q Science > QD Chemistry > Inorganic chemistry
Q Science > QD Chemistry > Physical and theoretical chemistry > Acids and bases
Q Science > QD Chemistry > Physical and theoretical chemistry > Conditions and laws of chemical reactions > Catalysis
Divisions: Universiti Teknologi MARA, Pahang > Jengka Campus
Journal or Publication Title: Gading Journal for Science and Technology
UiTM Journal Collections: UiTM Journal > Gading Journal of Science and Technology (GADINGS&T)
ISSN: 2637-0018
Volume: 3
Number: 1
Page Range: pp. 82-90
Keywords: Acidic crude oil, Naphthenic acid, Neutralization
Date: 31 March 2020
URI: https://ir.uitm.edu.my/id/eprint/31110
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