FAST GC-FID METHOD FOR MONITORING ACIDIC AND BASIC CATALYTIC TRANSESTERIFICATION REACTIONS IN VEGETABLE OILS TO METHYL ESTER BIODIESEL PREPARATION

Química Nova

Sato, Renata Takabayashi¹  Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil¹  Silva, Adilson David da¹  Stroppa, Pedro Henrique Fazza¹  Oliveira, Marcone Augusto Leal de¹ 

关键词:  biodiesel;    fatty acid methyl esters;    fast gas chromatography;    ionic liquid column;   

DOI  :  10.5935/0100-4042.20160027

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

A fast gas chromatography with a flame ionisation detector (GC-FID) method for the simultaneous analysis of methyl palmitate (C16:0), stearate (C18:0), oleate (C18:1), linoleate (C18:2) and linolenate (C18:3) in biodiesel samples was proposed. The analysis was conducted in a customised ionic-liquid stationary-phase capillary, SLB-IL 111, with a length of 14 m, an internal diameter of 0.10 mm, a film thickness of 0.08 µm and operated isothermally at 160 °C using hydrogen as the carrier gas at a rate of 50 cm s-1 in run time about 3 min. Once methyl myristate (C14:0) is present lower than 0.5% m/m in real samples it was used as an internal standard. The method was successful applied to monitoring basic and acidic catalysis transesterification reactions of vegetable oils such as soybean, canola, corn, sunflower and those used in frying process.

【 授权许可】

Unknown