INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Synthesis of n-butylamine from butyronitrile on Ni/SiO2: Effect of solvent
Autor/es:
SEGOBIA, DARÍO J.; TRASARTI, ANDRÉS F.; APESTEGUÍA, CARLOS R.
Revista:
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
Editorial:
SOC BRASILEIRA QUIMICA
Referencias:
Lugar: San Pablo; Año: 2014 vol. 25 p. 2272 - 2279
ISSN:
0103-5053
Resumen:
The effect of solvent on Ni(10.5%)/SiO2 activity and selectivity for the liquid-phase conversion of butyronitrile to butylamines was studied using ethanol, benzene, toluene and cyclohexane as solvents. In ethanol, a protic solvent, the Ni catalyst yielded n-butylamine (84%) and dibutylamine. Replacing ethanol by non-polar solvents (benzene, toluene, cyclohexane) caused significant changes in catalyst activity and selectivity. In particular, the selectivity to n-butylamine decreased at the expense of dibutylamine and tributylamine formation. The solvent effect on the catalyst performance was interpreted by considering: i) the solvent-catalyst interaction strength that was investigated by calorimetry, and temperature-programmed desorption of solvents characterized by mass spectrometry; ii) the solvent polarity and its ability for H-bond formation with n-butylamine.
