化工进展2023，Vol.42Issue(11)：5661-5668,8.DOI:10.16085/j.issn.1000-6613.2022-2240
TEPA/TBHQ复配对生物柴油氧化安定-腐蚀性的影响
Effect of TEPA/TBHQ combination on oxidative stability-corrosion of biodiesel
摘要
Abstract
Biodiesel is a green low-carbon liquid fuel.Poor oxidation stability and tendency to corrode metals limit its large-scale application.In this study,tetraethylenepentamine(TEPA)and tert-butylhydroquinone(TBHQ)were compounded to an highly effective inhibitor of oxidation-corrosion taking Jatropha biodiesel as the object of study.The Rancimat method,scanning electron microscope and other characterization methods were used to investigate the effect and mechanism of the oxidation-corrosion inhibitor on the oxidation stability and corrosion performance of biodiesel.The results showed that the oxidation induction period was increased from 4.24h to 7.83h by adding 0.1‰ inhibitor with the ratio of 4∶1 oxidation-corrosion into Jatropha biodiesel.Meanwhile,it had better corrosion inhibition.The corrosion grade on a copper strip of biodiesel was decreased from 3a to 1a,the carbon element on the surface of the copper strip was reduced from 10.5% to 8.5% ,and the oxygen element was decreased from 10% to 0.TEPA chelated Cu2+,and TBHQ provided H radicals to interrupt the biodiesel auto-oxidation chain reaction.TEPA could provide H radicals to restore and regenerate the used TBHQ.The combination of the two had a good synergistic effect,which could improve biodiesel oxidative stability and corrosion.This study provided theoretical support for the large-scale application of biodiesel.关键词
液体燃料/四乙烯五胺/叔丁基对苯二酚/复配抗氧化-缓蚀剂/抗氧化性/缓蚀性Key words
liquid fuel/tetraethylenepentamine(TEPA)/tert-butylhydroquinone(TBHQ)/oxidation-corrosion inhibitor/antioxidation/corrosion inhibition分类
能源科技引用本文复制引用
何需要,陈仁义,刘明,李恒龙,李法社,张慧聪..TEPA/TBHQ复配对生物柴油氧化安定-腐蚀性的影响[J].化工进展,2023,42(11):5661-5668,8.基金项目
国家自然科学基金(52166013) （52166013）
云南省基础研究计划(202101AS070115) （202101AS070115）
国家自然科学基金联合基金(U1602272). （U1602272）
