Studies on the thermal decomposition of coconut oil using infrared spectrophotometry

Date

1989

Degree

Bachelor of Science in Agricultural Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Julian Banzon

Abstract

The coconut oil heated for a sufficient length of time at different temperatures was examined by infrared spectrophotometry and analyzed for its free acidity and saponification number. Decomposition products were produced from the coconut oil with or without catalysts by prolonged heating -above 300°C. Dimerization and increase in aldehydes, ketones, and anhydride contents in the un--% catalyzed oils were observed as shown by increased the intensity of the absorption bands corresponding to these groups.

Spectral analysis showed that iodine was the nest. catalyst, followed by aluminum and iron oxide.

Iodine-catalyzed oil showed acid iodide formation ,t 5.50 microns. Iron- catalyzed oil showed decreased absorption 6.24, and between 8.0 to 10.0 microns during pyrolysis. Aluminum-catalyzed oil did not show am: 5.50 -micron- peak and absorption increased at 6.23 microns and decreased between 8.0 to 10.0 microns.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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