HYDROGENATION OF NITROBENZENE ON Au/ZrO2 CATALYSTS

The hydrogenation of nitrobenzene at 298K and pressure of 40 bar of H2 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 nanopa...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	GÓMEZ,SAMUEL, TORRES,CECILIA, GARCÍA FIERRO,JOSÉ LUIS, APESTEGUÍA,CARLOS R, REYES,PATRICIO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2012
Materias:	Gold nanoparticles zirconia nitrobenzene hydrogenation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000200029
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-97072012000200029
record_format	dspace
spelling	oai:scielo:S0717-970720120002000292014-03-10HYDROGENATION OF NITROBENZENE ON Au/ZrO2 CATALYSTSGÓMEZ,SAMUELTORRES,CECILIAGARCÍA FIERRO,JOSÉ LUISAPESTEGUÍA,CARLOS RREYES,PATRICIO Gold nanoparticles zirconia nitrobenzene hydrogenation The hydrogenation of nitrobenzene at 298K and pressure of 40 bar of H2 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.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.57 n.2 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000200029en10.4067/S0717-97072012000200029
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Gold nanoparticles zirconia nitrobenzene hydrogenation
spellingShingle	Gold nanoparticles zirconia nitrobenzene hydrogenation GÓMEZ,SAMUEL TORRES,CECILIA GARCÍA FIERRO,JOSÉ LUIS APESTEGUÍA,CARLOS R REYES,PATRICIO HYDROGENATION OF NITROBENZENE ON Au/ZrO2 CATALYSTS
description	The hydrogenation of nitrobenzene at 298K and pressure of 40 bar of H2 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.
author	GÓMEZ,SAMUEL TORRES,CECILIA GARCÍA FIERRO,JOSÉ LUIS APESTEGUÍA,CARLOS R REYES,PATRICIO
author_facet	GÓMEZ,SAMUEL TORRES,CECILIA GARCÍA FIERRO,JOSÉ LUIS APESTEGUÍA,CARLOS R REYES,PATRICIO
author_sort	GÓMEZ,SAMUEL
title	HYDROGENATION OF NITROBENZENE ON Au/ZrO2 CATALYSTS
title_short	HYDROGENATION OF NITROBENZENE ON Au/ZrO2 CATALYSTS
title_full	HYDROGENATION OF NITROBENZENE ON Au/ZrO2 CATALYSTS
title_fullStr	HYDROGENATION OF NITROBENZENE ON Au/ZrO2 CATALYSTS
title_full_unstemmed	HYDROGENATION OF NITROBENZENE ON Au/ZrO2 CATALYSTS
title_sort	hydrogenation of nitrobenzene on au/zro2 catalysts
publisher	Sociedad Chilena de Química
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000200029
work_keys_str_mv	AT gomezsamuel hydrogenationofnitrobenzeneonauzro2catalysts AT torrescecilia hydrogenationofnitrobenzeneonauzro2catalysts AT garciafierrojoseluis hydrogenationofnitrobenzeneonauzro2catalysts AT apesteguiacarlosr hydrogenationofnitrobenzeneonauzro2catalysts AT reyespatricio hydrogenationofnitrobenzeneonauzro2catalysts
_version_	1718445467636858880

HYDROGENATION OF NITROBENZENE ON Au/ZrO2 CATALYSTS

Ejemplares similares