Hydrocarbons, C4 – C11Analysis of reformate

Application Note

Energy & Fuels

IntroductionGas chromatography with an Agilent CP-Sil 2 CB column separates 111 reformate C4 to C11 hydrocarbons in 49 minutes.

AuthorsAgilent Technologies, Inc.

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ConditionsTechnique : GC-capillary

Column : Agilent CP-Sil 2 CB, 0.25 mm x 100 m fused silica WCOT CP-Sil 2 CB (df = 0.25 μm)(Part no. CP7724) (2x coupled)

Temperature : 40 °C (8 min) → 200 °C, 4 °C/min

Carrier Gas : He, 300 kPa (3 bar, 42 psi)

Injector : Splitter, 1:50T = 200 °C

Detector : MSDtransfer line 280 °C

Sample Size : 1 μL

Courtesy : D. Estel, Leuna Werke, Leuna, Germany

Peak identification7. 2,3-dimethylbutane8. 2-methylpentane10. 3-methylpentane11. n-hexane12. 2,2-dimethylpentane13. 2,4-dimethylpentane14. methylcyclopentane15. 2,2,3-trimethylbutane16. benzene17. 3,3-dimethylpentane18. 2-methylhexane19. cyclohexane20. 2,3-dimethylpentane21. 3-methylhexane + 1,1-dimethylcyclopentane

22. 1-cis-3-dimethylcyclopentane + 3-ethylpentane23. 1-trans-3-dimethylcyclopentane24. 1-trans-2-dimethylcyclopentane25. n-heptane26. unknown27. 1,1,3-trimethylcyclopentane28. 2,2-dimethylhexane + 1-cis-2-dimethylcyclopentane29. methylcyclohexane + 2,5-dimethylhexane + 2,4-dimethylhexane30. ethylcyclopentane31. 3,3-dimethylhexane32. 1-trans-2-cis-4-trimethylcyclopentane

33. 1-trans-2-cis-3-trimethylcyclopentane34. unknown35. toluene36. 2,3-dimethylhexane37. 2-methyl-3-ethyl-pentane38. 2-methylheptane39. 4-methylheptane40. 1,1,2-trimethylcyclopentane41. 3,4-dimethylhexane42. 3-methylheptane43. 3-ethylhexane44. 1-cis-2-trans-4-trimethylcyclopentane45. 1-cis-3-dimethylcyclohexane + 1-trans-4-dimethylcyclohexane49. 1-cis-4-dimethylcyclohexane + 1-trans-3-dimethylcyclohexane

50. n-octane52 - 56. iso-C9-paraffins57. ethylcyclohexane58. unknown59. ethylbenzene60 - 61. iso-C9-paraffins62. 4-methyloctane63. 2-methyloctane64. m-xylene + p-xylene65. 3,4-dimethyloctane ?66. 3-methyloctane67. o-xylene68. n-nonane69. isopropylbenzene70 - 71. iso-C10-paraffins

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Peak identification

70 - 71. iso-C10-paraffins72. n-propylbenzene73. 1-methyl-3-ethylbenzene74. 1-methyl-4-ethylbenzene75 - 77. iso-C10-paraffins78. 1,3,5-trimethylbenzene79. 1-methyl-2-ethylbenzene80. 1,2,4-trimethylbenzene81. 1,2,3-trimethylbenzene82. indane + isobutylbenzene + sec-butylbenzene

83. 1-methyl-3-n-propylbenzene84. n-butylbenzene85. 1-methyl-4-n-propylbenzene86. 1,3-dimethyl-5-ethylbenzene87 - 88. unknown89. 1-methyl-2-n-propylbenzene90. iso-C11-paraffins91. 1,4-dimethyl-2-ethylbenzene92. 1,3-dimethyl-4-ethylbenzene93. 1,2-dimethyl-4-ethylbenzene94. 1-methylindane + 2-methylindane

95. 1,3-dimethyl-2-ethylbenzene96. iso-C11-paraffins97. toluene98. 1,2,4,5-tetramethylbenzene (durene)99. 1,2,3,5-tetramethylbenzene (isodurene)100 - 101. dimethyl-n-propylbenzenes (no position)102. unknown103. 5-methylindane104. 4-methylindane105. 1,2,3,4-tetramethylbenzene106. C11-aromate

107. tetrahydronaphthalene108. C11-aromate109. pentamethylbenzene110. 2-methyl naphthalene111. 1-methyl naphthalene

www.agilent.com/chemThis information is subject to change without notice.© Agilent Technologies, Inc. 2011Printed in the USA31 October, 2011First published prior to 11 May, 2010A00903