Compact NMR spectroscopy for real-time monitoring of a biodiesel production

MARIO H. M. KILLNER; YAMILA GARRO LINCK; ERNESTO DANIELI; J. ROHWEDDER; BERNHARD BLÜMICH

FUEL

ELSEVIER SCI LTD

Lugar: Amsterdam; Año: 2015 vol. 139 p. 240 - 240

0016-2361

he use of biodiesel shows innumerous advantages compared to fossil fuels, since biodiesel is a biodegradable and non-toxic fuel. Nowadays, most of the biodiesel commercialized in the world is produced by the transesterification reaction of vegetable oils withmethanol and basic catalysis. Understanding the reaction kinetics and controlling its optimum progress for improving the quality of the final product and to reduce production costs is of paramount importance. The present work explores compact 1H NMR spectroscopy to follow the course of the transesterification reaction in real time. For this purpose the magnet is integrated into a flow setup which allows one to transport the neat solution from the reactor into the measurement zone and back again into the reactor. A multivariate calibration model applying Partial Least Squares regression was built to analyze the measured data and to obtain information about the biodiesel conversion ratio with errors on the order of 1%. This infor