PreparationandSeparation of some P-cresol derivatives by Gas– liquid chromatography
الكلمات المفتاحية:
P-cresol derivative، Gas Chromatography، Liquid stationary phaseالملخص
The first part of this study involve preparationand identification of somep- cresol
derivatives C14H14N2O (4-MePAMeP), C13H11ClN2O (4-CPAMeP),C14H14N2O2(4-
OMePAMeP).In the second part including the study of gas chromatographic behavior
of theprepared compounds on liquid- stationary phases fused silica (BP10 ),Zebron
(FFAT),Polysiloxane (OV-5) capillary column by using Gas Chromatography
apparatus with Flame Ionization Detector FID,N2- as carrier gas with optimal flow
rate30 cm3/min ; with (10)0Cincrement depend on maximum temperature operation on
column and the temperature of the column inlet and detector were higher than the
separation column by (25,50)0C respectively .The results indicate that the
chromatographic behavior was normal ,showing decrease of specific retention volume
with increase of column temperature ,and a linear relation between logarithm of
specific retention volume and the reciprocal of absolute temperature appears
depending onClausius –Clapeyron equation , the Δ S0 , ΔH0 , Δ G, were calculated
after that the resolution (RS) ,number of theoretical plates(N) andheight equivalent to
theoretical plate(HETP) were also calculated.
