丁二烯在氧气中的氧化反应特性及产物  

Oxidation characteristics and products of butadiene in oxygen atmosphere

作　　者：赵惠霞 刘雄民[1] 段鹏志 梁敏 马丽[1] 赖芳[1] ZHAO Hui-xia;LIU Xiong-min;DUAN Peng-zhi;LIANG Min;MA Li;LAI Fang(School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《应用化工》2020年第10期2425-2431,共7页Applied Chemical Industry

基　　金：国家自然科学基金(21776050);广西科技重大专项(桂科AA17204087-20)。

摘　　要：采用小型密闭压力容器试验(MCPVT)装置,考察丁二烯的氧化特性,用碘量法测定氧化过程的过氧化值,探讨丁二烯的初期可能氧化反应生成,用顶空(进样)-气相色谱-质谱联用(HS-GC-MS)技术测定反应产物。结果表明,在氮气氛围中,即使到达105℃也未检测到丁二烯发生反应,在氧气氛围中,45℃下能测定过氧化物生成,65℃反应26 h,过氧化值达到9.1 mmol/kg。在70~100℃下,MCPVT能观察到显著的化学反应产生,压力减少。丁二烯在氧气中的反应是复杂的,主要产物有丙烯醛、呋喃、2,5二氢呋喃、2,3二氢呋喃、反式1,2-二乙烯基环丁烷、4-乙烯基环己烯、1,5-环辛二烯等。Using mini closed pressure vessel test device(MCPVT)to measure it.The possible initial oxidation reaction of butadiene was discussed by measuring the peroxide value of oxidation process by iodimetry.The reaction products were determined by headspace(injection)-gas chromatography-mass spectrometry(HS-GC-MS).Results show that in nitrogen atmosphere,no reaction of butadiene is detected even at 105℃.In oxygen atmosphere,the formation of peroxides can be measured at 45℃.The peroxide value reaches 9.1 mmol/kg at 65℃26 h.At 70~100℃,MCPVT can observe significant chemical reactions and the reduces pressure.The reaction of butadiene in oxygen is complex,mainly including acrolein,furan,2,5-dihydrofuran,2,3-dihydrofuran,trans 1,2-divinylcyclobutane,4-vinylcyclohexene,1,5-ring octadiene.

关 键 词：丁二烯 氧化反应 过氧化物 产物 

分 类 号：TQ031.7[化学工程] O622.1[理学—有机化学]