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正癸烷和正己烷气相氧化裂解过程的研究
引用本文:张存龙,朱海欧,刘雪斌,李文钊,徐恒泳.正癸烷和正己烷气相氧化裂解过程的研究[J].燃料化学学报,2006,34(4):439-443.
作者姓名:张存龙  朱海欧  刘雪斌  李文钊  徐恒泳
作者单位:1. Department of Chemistry,Harbin Normal University, Harbin 150080, China;2. Dalian Institute of Chemical Physics,Chinese Academy of Sciences, Dalian 116023, China
基金项目:中国石油化工集团公司资助项目
摘    要:采用石英管反应器,常压下研究了正癸烷和正己烷的气相氧化裂解(GOC)过程。实验结果表明,O2的存在降低了正癸烷GOC反应的活化能,使反应在较低的温度下具有高的反应性能;O2同时起到消除积炭的作用,提高体系的抗积炭能力。于热裂解反应相比,低温下正癸烷的GOC反应更适合制备液体组分,同时联产低碳烯烃。在600℃,碳氧摩尔比为2.5时,正癸烷的GOC反应可获得39.9%的低碳烯烃收率和30.0%的液体收率。对于直链烷烃的GOC反应,低温下O2主要进行氧化脱氢反应,高温下则更多的进行 CO x(x=1,2)的生成反应;和正己烷分子相比,相同反应条件下O2更容易引发正癸烷分子的部分氧化反应生成CO。

关 键 词:正癸烷  正己烷  气相氧化裂解  低碳烯烃  液体  
文章编号:0253-2409(2006)04-0439-05
收稿时间:2005-10-03
修稿时间:2006-04-21

Study on gas phase oxidative cracking of decane and hexane
ZHANG Cun-long,ZHU Hai-ou,LIU Xue-bin,LI Wen-zhao,XU Heng-yong.Study on gas phase oxidative cracking of decane and hexane[J].Journal of Fuel Chemistry and Technology,2006,34(4):439-443.
Authors:ZHANG Cun-long  ZHU Hai-ou  LIU Xue-bin  LI Wen-zhao  XU Heng-yong
Institution:1. Department of Chemistry,Harbin Normal University, Harbin 150080, China ; 2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
Abstract:The gas phase oxidative cracking (GOC) of decane and hexane has been investigated in this paper. The higher performance of reaction and decoking were obtained in the GOC processes, as compared with their pyrolysis processes. At lower temperature, GOC process of decane is more suitable for producing liquid compounds, as well as low alkenes. A lower alkene yield of 13.1% and liquid yield of 37.4% were obtained in GOC of decane under the condition of 500℃ and n(C)/n(O)=2.5. For GOC of long chained alkane, O2 participates primarily in the oxydehydrogenation reactions at low temperature while it takes part in the oxidation reactions to produce COx (x=1,2) at high temperature,. Under the same reaction conditions, a higher ring opening activity was obtained in GOC of decane compared with that in GOC of hexane.
Keywords:decane  hexane  gas phase oxidative cracking  lower alkenes  Liquid
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