CAJ | 학술논문

采用二维气相色谱技术分析了混合碳四馏分中微量炔烃--乙基乙炔(EA)和乙烯基乙炔(VA).在第一根非极性毛细管柱上进行碳四和碳五预分离,碳五以前组分通过二维色谱预切割模式,转移到第二根多孔层Al2O3开管柱上进一步分离.由于目标化合EA、VA周围没有碳五烯烃干扰,微量EA、VA很容易定性.该方法能准确定量测定微量(10-6级)碳四炔烃.分析结果对评判催化剂加氢脱炔效果起到了重要作用.
채용이유기상색보기술분석료혼합탄사류분중미량결경--을기을결(EA)화을희기을결(VA).재제일근비겁성모세관주상진행탄사화탄오예분리,탄오이전조분통과이유색보예절할모식,전이도제이근다공층Al2O3개관주상진일보분리.유우목표화합EA、VA주위몰유탄오희경간우,미량EA、VA흔용역정성.해방법능준학정량측정미량(10-6급)탄사결경.분석결과대평판최화제가경탈결효과기도료중요작용.
Trace alkynes [butyne-1(EA) and vinyl acetyeneare (VA)] in mixed C4 fractions were analyzed with 2-dimensional gas chromatography. Firstly, C4 and C5 were separated on a non-polar methyl silicone column, then the components lighter than C5 were switched to an Al2O3 open tubular column for further separation. The target compounds (trace EA and VA) were separated and identified clearly with no interference of C5 olefins. The method can accurately determine trace (10-6) alkynes and has already been used for evaluating the effect of catalyst for hydro-dealkynation satisfactorily.