Application of catalytic ozone chemistry for improving biodiesel product performance.

Abstract:

:Ozonolysis of methyl soyate (biodiesel) was conducted in the presence of methanol, dichloromethane (solvent), and triethylamine (catalyst) at -75 degrees C. Structural analysis, including FTIR, GC, and GC-MS, showed that the total amount of double bonds in the mixture was reduced by more than 90% after 2 h of ozonolysis. All of the esters predicted by this novel application of ozone reaction chemistry were successfully produced. Other major components were identified by GC-MS. Thermogravimetric analysis showed a dramatic decrease in the onset volatilization temperature from 135 to 73 degrees C, making ozonated biodiesel fuel comparable to diesel fuel (76 degrees C). Differential scanning calorimetric studies showed that the cooling curves for both methyl soyate and ozonated methyl soyate displayed two exothermic regions. The onset freezing temperature of ozonated methyl soyate in the "colder" region was significantly reduced from -63 to -86 degrees C. Furthermore, the degree of crystallinity in the "hotter" region was also reduced.

journal_name

Biomacromolecules

journal_title

Biomacromolecules

authors

Baber TM,Graiver D,Lira CT,Narayan R

doi

10.1021/bm049397f

keywords:

subject

Has Abstract

pub_date

2005-05-01 00:00:00

pages

1334-44

issue

3

eissn

1525-7797

issn

1526-4602

journal_volume

6

pub_type

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