混合纳米级Al_2O_3/SPLOT毛细管色谱柱的研制及应用
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摘要
采用动态涂渍法制备高效Al2O3/S PLOT(porous layer open tubular)毛细管色谱柱,对比了微米级、纳米级和其混合氧化铝对低碳烃的保留性能。结果表明,用混合纳米级与微米级氧化铝作固定相,10%Na2SO4水溶液去活所研制的Al2O3/S PLOT毛细管色谱柱具有较好的柱惰性、选择性和较高的柱容量;其对C1~C5低碳烃具有较高的分离能力,能够基线分离所有组分,有助于各组分的综合利用;适用于高C4含量液化气以及聚合级乙烯、丙烯的分析,对工业上丁烯异构体的提取和利用以及聚合级烯烃的生产具有指导意义。
High performance porous layer open tubular( PLOT) columns with alumina are prepared by means of dynamic coating techniques. The retention capabilities of light hydrocarbons on micro-,nano- and micro /nano mixed alumina columns are compared. The results show that Al2O3PLOT capillary columns which are prepared by using mixedscale alumina as stationary phase and subsequently deactivated by 10% Na2SO4solution,exhibit high selectivity,large capacity and good reproducibility. It also has unique activity in the analysis of light hydrocarbons C1- C5,which is suitable for polymerization grade ethylene,propylene and liquefied petroleum gas with high content of C4.
High performance porous layer open tubular( PLOT) columns with alumina are prepared by means of dynamic coating techniques. The retention capabilities of light hydrocarbons on micro-,nano- and micro /nano mixed alumina columns are compared. The results show that Al2O3PLOT capillary columns which are prepared by using mixedscale alumina as stationary phase and subsequently deactivated by 10% Na2SO4solution,exhibit high selectivity,large capacity and good reproducibility. It also has unique activity in the analysis of light hydrocarbons C1- C5,which is suitable for polymerization grade ethylene,propylene and liquefied petroleum gas with high content of C4.
引文
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[6]秦金平,卜群,徐艳莉,等.氧化铝毛细管色谱柱的研制及在液化石油气检测中的应用[J].化学世界,2008,49(3):148-150,157.
[7]刘俊彦,李继文,王川.轻烃组分在Al2O3色谱柱的不可逆吸附研究[J].石油炼制与化工,2014,45(2):84-89.
[8]赵国宏,雷晓强,王仲来,等.高性能Al2O3/S PLOT石英毛细管色谱柱的研制及其低碳烃分析[J].石油化工,2002,31(3):210-213.
[2]Berezkin V G,De Zeeuw J.Capillary gas adsorption chromatography[M].New Jersey:John Wiley&Sons,2008.
[3]尹芳欣.气相色谱法测定汽油中C1~C4烃类含量[J].石油化工高等学校学报,1995,8(4):18-22.
[4]詹智玉.岩石与天然气中C1~C9烃类分析方法的研究[J].石油实验地质,1990,12(3):326-332.
[5]Blumer M.Preparation of porous layer open tubular columns by dynamic coating and rapid conditioning[J].Analytical Chemistry,1973,45(6):980-982.
[6]秦金平,卜群,徐艳莉,等.氧化铝毛细管色谱柱的研制及在液化石油气检测中的应用[J].化学世界,2008,49(3):148-150,157.
[7]刘俊彦,李继文,王川.轻烃组分在Al2O3色谱柱的不可逆吸附研究[J].石油炼制与化工,2014,45(2):84-89.
[8]赵国宏,雷晓强,王仲来,等.高性能Al2O3/S PLOT石英毛细管色谱柱的研制及其低碳烃分析[J].石油化工,2002,31(3):210-213.