Method of increasing the oxidation stability of biodiesel
A technology of oxidation stability and biodiesel, applied in chemical instruments and methods, organic chemistry, petroleum industry, etc., can solve problems such as clogging and corrosion
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Embodiment 1
[0194] Example 1 - Preparation of samples
[0195] In a glass beaker, the primary antioxidant was dissolved in the biodiesel at 20° C. with stirring, and the stirring was continued until a clear solution of the primary antioxidant in the biodiesel was obtained. The primary antioxidants used, the biodiesel used and the ratios are shown in Table 1.
Embodiment 2
[0196] Example 2 - Composition of Primary Antioxidant Used
[0197] Primary Antioxidant 1
[0198] (obtained under the trade name IONOL 99 from Degussa AG):
[0199] >99.0% by weight of 2,6-di-tert-butylphenol
[0200] <0.5% by weight of 2-tert-butylphenol
[0201] <0.5% by weight of 2,4-di-tert-butylphenol
[0202] Primary Antioxidant 2
[0203] (obtained under the trade name IONOL K98 from Degussa AG):
[0204] >98.5% by weight of 6-tert-butyl-2,4-dimethylphenol
[0205] <1.5% by weight of 4-tert-butyl-2,6-dimethylphenol and di-tert-butylmethyl-phenols
[0206] Primary Antioxidant 3
[0207] (available from Degussa AG under the trade name IONOL K65):
[0208] >55% by weight of 6-tert-butyl-2,4-dimethylphenol
[0209] >15% by weight of 2,6-di-tert-butyl-4-methylphenol
[0210] 18-22% by weight tert-butyl-2,5-dimethylphenol
[0211] <1% by weight of 4,6-di-tert-butyl-2-methylphenol
[0212] <3.5% by weight of di-tert-butyl-3-methylphenol
[0213] <3.5% by weight o...
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