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生物质化学工程 ›› 2019, Vol. 53 ›› Issue (5): 44-48.doi: 10.3969/j.issn.1673-5854.2019.05.008

• 研究报告 • 上一篇    下一篇

没食子酸酯类抗氧化剂对生物柴油氧化稳定性能的比较分析

张逸水1(),李法社1,2,*(),王霜1   

  1. 1. 昆明理工大学 冶金与能源工程学院, 云南 昆明 650093
    2. 冶金节能减排教育部工程研究中心, 云南 昆明 650093
  • 收稿日期:2018-09-09 出版日期:2019-09-30 发布日期:2019-09-27
  • 通讯作者: 李法社 E-mail:786714517@qq.com;asan97@qq.com
  • 作者简介:张逸水(1996-),男,湖南娄底人,硕士生,主要从事能源动力方面研究; E-mail:786714517@qq.com
  • 基金资助:
    国家自然科学基金资助项目(51766007);云南省自然科学基金资助项目(2015FB128);云南省自然科学基金资助项目(2018FB092)

Comparative Analysis of Antioxidant Properties of Gallate Esters for Biodiesel Oxidation Stability

Yishui ZHANG1(),Fashe LI1,2,*(),Shuang WANG1   

  1. 1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
    2. Ministry of Education Engineering Research Center for Energy Conservation and Emission Reduction of Metallurgy, Kunming 650093, China
  • Received:2018-09-09 Online:2019-09-30 Published:2019-09-27
  • Contact: Fashe LI E-mail:786714517@qq.com;asan97@qq.com
  • Supported by:
    国家自然科学基金资助项目(51766007);云南省自然科学基金资助项目(2015FB128);云南省自然科学基金资助项目(2018FB092)

摘要:

以没食子酸及醇类物质为原料制备了7种不同酯基结构的没食子酸酯类抗氧化剂并进行了红外光谱表征,同时研究了7种抗氧化剂对22种生物柴油的抗氧化效果。研究结果表明:22种生物柴油的氧化稳定性能差别较大,7种不同酯基结构的没食子酸酯类抗氧化剂对22种生物柴油的抗氧化效果提升明显,其中酯基不同,对生物柴油的抗氧化效果差别较大,如添加没食子酸甲酯(a)后,小桐子生物柴油的诱导期从0.96h提高到9.79h,而添加没食子酸异丁酯(f),诱导期则从0.96h提高到5.92h,两者相差3.87h。a对生物柴油的抗氧化效果最好,在添加a后,22种生物柴油的诱导期均要大于其余6种没食子酸酯类抗氧化剂添加后的诱导期。同一种没食子酸酯类抗氧化剂对不同生物柴油的抗氧化效果有所不同,差别也较大,如a对香薷籽油生物柴油的抗氧化效果最好,使其诱导期时间从0.79 h提高到9.07 h,抗氧化效果提高了10.48倍;对棕榈油生物柴油的抗氧化效果最差,但也使其诱导期时间从7.82 h提高到55.68 h,其抗氧化效果也提高了6.12倍。支链酯基的没食子酸酯类抗氧化剂与直链酯基的没食子酸酯类抗氧化剂对生物柴油的抗氧化效果相差不大。

关键词: 没食子酸酯类, 氧化稳定性能, 抗氧化剂, 生物柴油

Abstract:

Seven kinds of gallic acid esters with different ester structure were prepared from gallic acid and alcohols and characterized by infrared spectroscopy. The results showed that the oxidation stability of 22 kinds of biodiesel was quite different. Seven different ester base structure of gallic acid ester antioxidant of 22 kinds of biodiesel significantly the antioxidant effect of ascension, the ester base different gallic acid ester antioxidant vary widely with the antioxidant effect of biodiesel such as adding gallic acid methyl ester(a), a small seed of tung tree of biodiesel induction period increased from 0.96 to 9.79 h, and adding the gallic acid butyl ester(f), a small seed of tung tree of biodiesel induction period increased from 0.96 to 5.92 h, both differ 3.87 h. Methyl gallate had the best antioxidant effect on biodiesel. After adding a, the induction period of 22 types of biodiesel was greater than that of the other six types of gallate antioxidants. The same kind of gallic acid ester antioxidant antioxidant effects of different biodiesel was different, the difference was bigger also. And the methyl gallate had the best antioxidant effect on biodiesel, the same kind of gallate ester antioxidant had different antioxidant effects to different biodiesel, such as methyl gallate had the best antioxidant effect on the biodiesel oil of Elsholtzia ciliata seed oil, which improved the induction time from 0.79 to 9.07 h, the antioxidant effect increased by 10.48 times, and the antioxidant effect on the palm oil biodiesel was poor, but the antioxidant effect also increased by 6.12 times, improving the induction time from 7.82 to 55.68 h. The antioxidant effects of gallate ester antioxidants with branched ester group or linear ester group on vegetable oils had very small difference.

Key words: gallate ester, oxidative stability, antioxidants, biodiesel

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