不同波长的光对生物柴油氧化安定性的影响

doi:10.11944/j.issn.1000-0518.2019.11.190041

摘要/Abstract

摘要：

为了研究光对生物柴油氧化安定性的影响,以小桐子生物柴油为研究对象,在20 ℃下用不同波长的光照射处理48 h,并对处理后的样品进行氧化安定性分析。结果表明,不同波长的光对生物柴油氧化的促进作用是不同的,以紫光为代表的短波长光对小桐子油生物柴油氧化的促进作用最强,其诱导期由5.12 h降至2.65 h,减少48%;波长较长的红光对生物柴油氧化的促进作用最弱,其诱导期降至4.61 h,减少10%。对不同波长的光处理的生物柴油进行酸值滴定、成分分析和紫外表征,结果表明,随着光波长的减小,生物柴油的酸值从0.2577 mg/g 增加到0.3438 mg/g;含有两个碳碳双键的亚油酸甲酯的相对含量降低;共轭双键的吸收峰增大。说明光波长越短,对生物柴油氧化的促进作用越强。

关键词: 生物柴油, 氧化安定性, 光氧化

Abstract:

In order to study the effect of light on the oxidation stability of biodiesel, the jatropha biodiesel was treated with light in different wavelengths at 20 ℃ for 48 hours. The treated samples were then analyzed for oxidative stability. The results showed that light promoted the oxidation of biodiesel. The short-wavelength light represented by violet light had the strongest promoting effect on the oxidation of jatropha oil biodiesel. The induction period decreased from 5.12 h to 2.65 h in 48%; the red light with longer wavelength has the weakest promoting effect on the oxidation of biodiesel, and the induction period is reduced to 4.61 h, which is reduced in 10%. The acid value titration, composition analysis and UV characterization of light-treated biodiesel with different wavelengths showed that the acid value of biodiesel increased from 0.2577 mg/g to 0.3438 mg/g as the wavelength of light decreased. The relative content of methyl linoleate in the carbon-carbon double bond decreases; the absorption peak of the conjugated double bond increases. This shows that the shorter the wavelength of light, the stronger the promotion toward biodiesel oxidation.

Key words: biodiesel, oxidation stability, photooxidation

王友昊,李法社,王文超,陈煜. 不同波长的光对生物柴油氧化安定性的影响[J]. 应用化学, 2019, 36(11): 1301-1307.

WANG Youhao,LI Fashe,WANG Wenchao,CHEN Yu. Effects of Light Wavelengths on Oxidative Stability of Biodiesel[J]. Chinese Journal of Applied Chemistry, 2019, 36(11): 1301-1307.

参考文献

[1]	LI Changzhu,ZHANG Liangbo,OU Riming,et al. Research on Biodiesel Development Strategy[J]. Hunan Forest Sci Technol,2005,32(6):6-8(in Chinese). 李昌珠,张良波,欧日明,等. 生物柴油发展战略研究[J]. 湖南林业科技,2005,32(6):6-8.
[2]	SUN Shangde,WANG Xingguo,SHAN Liang.Progress in Research and Development of Biodiesel[J]. Grain Oil,2007,(4):8-13(in Chinese). 孙尚德,王兴国,单良. 生物柴油研究与开发进展[J]. 粮食与油脂,2007,(4):8-13.
[3]	Zhang Y,Dubé M A,Mclean D D,et al. Biodiesel Production from Waste Cooking Oil:1.Process Design and Technological Assessment[J]. Bioresour Technol,2003,89(1):1-16.
[4]	LI Fashe,BAO Guirong,WANG Hua.Research Progress in Oxidation Stability of Biodiesel[J]. China Oils Fats,2009,34(2):1-5(in Chinese). 李法社,包桂蓉,王华. 生物柴油氧化稳定性的研究进展[J]. 中国油脂,2009,34(2):1-5.
[5]	Liang Y C,May C Y,Foon C S,et al. The Effect of Natural and Synthetic Antioxidants on the Oxidative Stability of Biodiesel[J]. Fuel,2006,85(5/6):867-870.
[6]	Ebiura T,Echizen T,Ishikawa A,et al. Selective Transesterification of Triolein with Methanol to Methyl Oleate and Glycerol Using Alumina Loaded with Alkali Metal Salt as a Solid-Base Catalyst[J]. Appl Catal A,2005,283(1/2):111-116.
[7]	Knothe G,Steidley K R.The Effect of Metals and Metal Oxides on Biodiesel Oxidative Stability from Promotion to Inhibition[J]. Fuel Process Technol,2018,177:75-80.
[8]	Shen J,Li F,Li Z,et al. Numerical Investigation of Air-Staged Combustion to Reduce NOX Emissions from Biodiesel Combustion in Industrial Furnaces[J]. J Energy Inst,2019,92(3):704-716.
[9]	LIU Zuowen,LI Fashe,SHEN Jiaxu,et al.Characteristics of Jatropha Biodiesel During Oxidation[J]. J Chinese Cereals Oils Assoc,2018,33(5):66-69,81(in Chinese). 刘作文,李法社,申加旭,等. 小桐子生物柴油在氧化期间的特性分析[J]. 中国粮油学报,2018,33(5):66-69,81.
[10]	LI Fashe.Preparation of Jatropha Biodiesel by Supercritical Two-Step Method and Its Antioxidation and Low Temperature Resistance[D]. Kunming University of Science and Technology,2011(in Chinese). 李法社. 小桐子生物柴油的超临界两步法制备及其抗氧化耐低温性的研究[D]. 昆明理工大学,2011.
[11]	SU Youyong,ZHANG Wudi,GE Zhenyang,et al. Preparation of Biodiesel by Cyclic Gas Phase Esterification-Transesterification-Steam Distillation[J]. J Kunming Univ Sci Technol(Nat Sci),2006,31(5):87-91(in Chinese). 苏有勇,张无敌,戈振扬,等. 循环气相酯化-酯交换-水蒸汽蒸馏法制备生物柴油的研究[J]. 昆明理工大学学报(自然科学版),2006,31(5):87-91.
[12]	LI Fashe,NI Zihao,DU Wei,et al. Study on the Composition Analysis of Biodiesel Before and after Oxidation[J]. China Oils Fats,2015,40(1):64-68(in Chinese). 李法社,倪梓皓,杜威,等. 生物柴油氧化前后成分分析的研究[J]. 中国油脂,2015,40(1):64-68.
[13]	ZHANG Mingcheng.Introduction of Oil Oxidation Mechanism and Antioxidant Measures[J]. Agric Machine,2011,(8):49-52(in Chinese). 张明成. 油脂氧化机理及抗氧化措施的介绍[J]. 农业机械,2011,(8):49-52.
[14]	ZHOU Shengqiang.The Main Cause of Oxidative Rancidity of Oil—Photooxidation[J]. Sichuan Cereals Oils Technol,2003,(2):28-30(in Chinese). 周胜强. 油脂氧化酸败的主要诱因——光氧化[J]. 四川粮油科技,2003,(2):28-30.
[15]	QIAN Weiguang.Mechanism of Photooxidation of Oils and Resistance to Photooxidation of Rosemary[J]. Sichuan Cereals Oils Technol,2000,(1):25-26(in Chinese). 钱伟光. 油脂光氧化机理及迷迭香抗光氧化的研究[J]. 四川粮油科技,2000,(1):25-26.
[16]	ZHANG Yuquan.Study on the Mechanism of Color Reversion During Storage of Vegetable Oil[D]. Jiangnan University,2015(in Chinese). 张余权. 植物油储存过程中回色机理研究[D]. 江南大学, 2015.
[17]	CAO Wenming,XUE Bin,YUAN Chao,et al. Research Progress on the Oxidative Rancidity of Oils and Fats[J]. Cereals & Oils,2013,26(3):1-5(in Chinese). 曹文明,薛斌,袁超,等. 油脂氧化酸败研究进展[J]. 粮食与油脂,2013,26(3):1-5.
[18]	XU Huihui.Study on Oxidation Stability of Biodiesel[D]. Zhengzhou:Zhengzhou University,2010(in Chinese). 徐辉辉. 生物柴油氧化安定性研究[D]. 郑州:郑州大学,2010.
[19]	REN Yiming,TANG Dingxing,DING Chunmei,et al. Discussion on Common Mistakes in Applying Woodward-Fieser Rules[J]. Chinese J Chem Educ,2011,32(3):65-66(in Chinese). 任一鸣,唐定兴,丁纯梅,等. 浅谈应用Woodward-Fieser规则的常见错误[J]. 化学教育(中英文), 2011,32(3):65-66.
[20]	Kanga Y.A Balanced Linear Equation of the Extended Woodward UV Rules for All Types of α,β-Unsaturated Ketones[J]. Tetrahedron Lett,2012,53(15):1928-1932.
[21]	Kang Y,Kang F A.A Linear Mathematical Relationship Hidden in the Woodward UV Rules for α,β-Unsaturated Ketones[J]. Tetrahedron Lett,2011,52(50):6679-6681.
[22]	CHEN Deheng.Organic Structure Analysis[M]. Beijing:Science Press,1985(in Chinese). 陈德恒. 有机结构分析[M]. 北京:科学出版社,1985.
[23]	HUANG Liang,YU Dequan.Application of Ultraviolet Spectroscopy in Organic Chemistry. Volume 1[M]. Beijing:Science Press,1988(in Chinese). 黄量,于德泉. 紫外光谱在有机化学中的应用.上册[M]. 北京:科学出版社,1988.
[24]	WU Jiang,CHEN Boshui,FANG Jianhua,et al. Infrared and Ultraviolet Spectrum Analysis of Biodiesel Before and after Oxidation[J]. Acta Pet Sin(Pet Process Sect),2014,(2):262-265(in Chinese). 吴江,陈波水,方建华,等. 氧化前后生物柴油的红外和紫外光谱分析[J]. 石油学报(石油加工),2014,(2):262-265.
[25]	WU Jiang,CHEN Boshui,FANG Jianhua,et al. Study on Oxidation Mechanism of Jatropha Oil Biodiesel Based on Spectral Analysis[J]. Renew Energy,2013,31(12):107-110(in Chinese). 吴江,陈波水,方建华,等. 基于光谱分析的小桐子油生物柴油氧化机理研究[J]. 可再生能源,2013,31(12):107-110.