摘要
采用固相萃取(SPE)技术,应用自行开发的Ag-SiO2固定相,分离出催化裂化柴油和焦化柴油中的烯烃,并用GC/MS和1 H NMR表征烯烃的类型和碳数分布。结果表明:催化裂化柴油和焦化柴油中的烯烃类型主要包括正构α-烯烃、内单烯烃、双烯烃和环烯烃;催化裂化柴油烯烃中的内烯氢摩尔分数为80.41%,而焦化柴油中的正构α-烯氢摩尔分数为53.32%;催化裂化柴油中的烯烃碳数集中在11～15,焦化柴油中的烯烃碳数集中在12～22。
An Ag-SiO2 stationary phase was prepared and applied in solid phase extraction （SPE） technique to separate alkenes from FCC diesel fractions and coker diesel fractions. GC/MS and 1H NMR were used to characterize the types and carbon number distributions of the separated alkenes. Test results showed that normal a-olefin, internal monoolefin, diolefin and cycloolefin were the main types of alkenes in FCC diesel fractions and coker diesel fractions. The mole fraction of internal-ene hydrogen in FCC diesel fractions was 80.41% ,and the mole fraction of normal a-ene hydrogen in coker diesel fractions was 53. 320%o. The distributions of alkenes in FCC diesel fractions and coker diesel fractions were focused on CII--C15 and C12 C22 ,respectively
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2011年第11期76-80,共5页
Petroleum Processing and Petrochemicals
基金
国家重点基础研究发展计划"973"项目(2006CB202501)资助
关键词
柴油
烯烃
固相萃取
质谱分析
核磁共振波谱
diesel fuel
alkene
solid phase extraction （SPE）
mass spectrometry analysis
nuclearmagnetic resonance spectra
