Production of hydrocarbons by catalytic cracking of stearic acid under atmospheric pressure for petrochemical replacement |
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Authors: | S Amber |
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Affiliation: | Department of Applied Chemistry and Chemical Technology, University of Karachi, Karachi, Pakistan |
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Abstract: | Catalytic cracking of stearic acid (FFA) was carried out at atmospheric pressure to obtain short chain hydrocarbons for petrochemical replacement using alumina, sodium carbonate and hydrated magnesium carbonate (HMC) as a catalyst. All the three catalysts not only reduced the temperature but also the time required for cracking from 500 to 340?°C and 5 to 1:45?hours respectively. Cracking adopted the similar mechanism carried out in previous studies proven by the presence of n-alkane, alkene and carboxylic acid series with small amounts of aldehydes and ketones identified through Gas chromatography-Mass spectroscopy analysis. HMC was found a better catalyst regarding hydrocarbon formation produced 60.607?mole percent hydrocarbons at 350?°C using 10:1 (w/w) acid to catalyst mass ratio. HMC formed all hydrocarbons from C12-C17 in lesser cracking time 1:45?hours. |
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Keywords: | catalytic cracking hydrated magnesium carbonate hydrocarbons pyrolysis stearic acid |
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