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Studies of the separation performance of silanized silica gel for simulated distillation
Author(s) -
Boczkaj Grzegorz,
Momotko Malwina,
Przyjazny Andrzej,
Kamiński Marian
Publication year - 2016
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201501127
Subject(s) - silica gel , distillation , chromatography , fraction (chemistry) , elution , gasoline , theoretical plate , chemistry , reproducibility , gas chromatography , sorbent , analytical chemistry (journal) , materials science , adsorption , organic chemistry
We present the results of investigations of the chromatographic (sorptive) properties of silanized silica gel as a stationary phase for gas chromatography used for simulated distillation. Commercially available silanized sorbent (particle diameter range 63–200 μm, average pore size 60 Å) was sieved to obtain the 80–100 mesh fraction (180–150 μm). The obtained results revealed that silanized silica gel allows the complete separation of a mixture of n ‐ and iso ‐alkanes in the C 1 –C 7 range. Such a separation is achieved with a temperature program starting with an initial temperature of 50˚C, which is advantageous because the gas chromatograph oven does not have to be cooled below room temperature. The use of temperature programming with a final temperature of 300˚C ensures separation and elution of all mixture components from C 1 to n ‐C 28 in one run. This study confirms the applicability of silanized silica gel as a stationary phase for the investigation of distillation temperature distribution of gasoline and diesel fuel based on the simulated distillation procedure according to ASTM D2887. The deviations of individual points of distillation curve obtained using ASTM D2887 and columns packed with silanized silica gel were within the reproducibility range of the standard procedure.