Resumen
The hydrogenation of nitrobenzene at 298K and pressure of 40 bar of H 2 over zirconia supported Au catalysts has been studied. Three different procedures were used to prepare 1wt% of Au/ZrO2 catalysts: i) An impregnation method using HAuCl4 as gold precursor ii)Depositation precipitation of Au nanoparticles generated in the presence of urea and iii) Deposition of Gold nanoparticles generated in presence of cetryltrimethylammonium bromide (CTMABR) as surfactant. The catalysts were characterized by nitrogen adsorption-desorption isotherms at 77 K, XRD, TEM and XPS techniques. The reactions were carried out in a stainless steel batch reactor using ethanol as solvent. The catalysts exhibits a higher selectivity to aniline, with low accumulation of intermediate products. The kinetic study displayed orders 1 respect to hydrogen pressure and to the substrate concentration (nitrobenzene), and the activation energy was 67.2 KJ/mol.
| Idioma original | English |
|---|---|
| Páginas (desde-hasta) | 1194-1198 |
| Número de páginas | 5 |
| Publicación | Journal of the Chilean Chemical Society |
| Volumen | 57 |
| N.º | 2 |
| DOI | |
| Estado | Published - 1 ene 2012 |
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ASJC Scopus subject areas
- Chemistry(all)
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Hydrogenation of nitrobenzene on Au/ZrO2 catalysts. / Gómez, Samuel; Torres, Cecilia; Fierro, José Luis García; Apesteguía, Carlos R.; Reyes, Patricio.
En: Journal of the Chilean Chemical Society, Vol. 57, N.º 2, 01.01.2012, p. 1194-1198.Resultado de la investigación: Article
TY - JOUR
T1 - Hydrogenation of nitrobenzene on Au/ZrO2 catalysts
AU - Gómez, Samuel
AU - Torres, Cecilia
AU - Fierro, José Luis García
AU - Apesteguía, Carlos R.
AU - Reyes, Patricio
PY - 2012/1/1
Y1 - 2012/1/1
N2 - The hydrogenation of nitrobenzene at 298K and pressure of 40 bar of H 2 over zirconia supported Au catalysts has been studied. Three different procedures were used to prepare 1wt% of Au/ZrO2 catalysts: i) An impregnation method using HAuCl4 as gold precursor ii)Depositation precipitation of Au nanoparticles generated in the presence of urea and iii) Deposition of Gold nanoparticles generated in presence of cetryltrimethylammonium bromide (CTMABR) as surfactant. The catalysts were characterized by nitrogen adsorption-desorption isotherms at 77 K, XRD, TEM and XPS techniques. The reactions were carried out in a stainless steel batch reactor using ethanol as solvent. The catalysts exhibits a higher selectivity to aniline, with low accumulation of intermediate products. The kinetic study displayed orders 1 respect to hydrogen pressure and to the substrate concentration (nitrobenzene), and the activation energy was 67.2 KJ/mol.
AB - The hydrogenation of nitrobenzene at 298K and pressure of 40 bar of H 2 over zirconia supported Au catalysts has been studied. Three different procedures were used to prepare 1wt% of Au/ZrO2 catalysts: i) An impregnation method using HAuCl4 as gold precursor ii)Depositation precipitation of Au nanoparticles generated in the presence of urea and iii) Deposition of Gold nanoparticles generated in presence of cetryltrimethylammonium bromide (CTMABR) as surfactant. The catalysts were characterized by nitrogen adsorption-desorption isotherms at 77 K, XRD, TEM and XPS techniques. The reactions were carried out in a stainless steel batch reactor using ethanol as solvent. The catalysts exhibits a higher selectivity to aniline, with low accumulation of intermediate products. The kinetic study displayed orders 1 respect to hydrogen pressure and to the substrate concentration (nitrobenzene), and the activation energy was 67.2 KJ/mol.
KW - Gold
KW - Nanoparticles
KW - Nitrobenzene hydrogenation
KW - Zirconia
UR - http://www.scopus.com/inward/record.url?scp=84866414121&partnerID=8YFLogxK
U2 - 10.4067/S0717-97072012000200029
DO - 10.4067/S0717-97072012000200029
M3 - Article
AN - SCOPUS:84866414121
VL - 57
SP - 1194
EP - 1198
JO - Journal of the Chilean Chemical Society
JF - Journal of the Chilean Chemical Society
SN - 0717-9324
IS - 2
ER -