新型酚酰胺抗氧剂AO-BIO的合成及在生物柴油中的应用

以3-(3,5-二叔丁基-4-羟基苯基)丙酸甲酯为原料，与具有含氮基团的氨乙基哌嗪进行酯转酰胺反应，合成了一种新型酚酰胺类抗氧剂3-(3,5-二叔丁基-4-羟基苯基)-N-(2-(1-哌嗪基)乙基)丙酰胺(AO-BIO)，并采用GC-MS、电喷雾质谱和傅里叶变换红外光谱对其进行表征。采用Racimat法（EN 14112∶2003和EN 15751∶2009）测定了抗氧剂AO-BIO在酸化油生物柴油、菜籽油生物柴油及B5、B20生物柴油调合燃料中的抗氧化效果。结果表明，合成的AO-BIO为具有酚酰胺结构的抗氧剂，且目标产物在抗氧剂AO-BIO的有效质量分数为98.27%，抗氧剂AO-BIO的抗氧化效果优于常见的酚类抗氧剂，可有效减少抗氧剂的加剂量。优于常见的酚类抗氧剂，可有效减少抗氧剂的加剂量。

Synthesis of Phenol-Amide Antioxidant AO-BIO and Its Application in Biodiesel

An antioxidant of 3-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-N-(2-(piperazin-1-yl)ethyl) propanamide (AO-BIO) was synthesized through the ester-to-amide reaction of methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate with N-aminoethyl piperazine and characterized by GC-MS, ESI-MS and FT-IR. The antioxidant properties of the acid oil biodiesel, rapeseed oil biodiesel and biodiesel fuel blends with AO-BIO added were investigated by using Rancimat oxidation test method (EN 14112∶2003 and EN 15751∶2009). It was found that AO-BIO had a phenol-amide structure and 98.27% target compound was found in AO-BIO. The novel antioxidant AO-BIO showed better performances than other common phoenic antioxidants and a significant reduction in dosage could be achieved. 