LIQUID-PHASE HYDROGENATION OF m-DINITROBENZENE OVER PLATINUM CATALYSTS

The m-dinitrobenzene hydrogenation to m-phenylenediamine in liquid phase was studied with platinum supported on SiO2, TiO2, Al2O3 and Nb2O5 catalysts. Incipient impregnation method was used to prepare the catalysts with 1wt% of Pt. The effect of the support and the reduction temperature (473 K or 77...

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Autores principales:	ROJAS,HUGO, BORDA,GLORIA, REYES,PATRICIO, BRIJALDO,MARÍA, VALENCIA,JESÚS
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2011
Materias:	m-dinitrobenzene m-phenylenediamine hydrogenation fine chemical
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072011000300016
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spelling	oai:scielo:S0717-970720110003000162012-01-11LIQUID-PHASE HYDROGENATION OF m-DINITROBENZENE OVER PLATINUM CATALYSTSROJAS,HUGOBORDA,GLORIAREYES,PATRICIOBRIJALDO,MARÍAVALENCIA,JESÚS m-dinitrobenzene m-phenylenediamine hydrogenation fine chemical The m-dinitrobenzene hydrogenation to m-phenylenediamine in liquid phase was studied with platinum supported on SiO2, TiO2, Al2O3 and Nb2O5 catalysts. Incipient impregnation method was used to prepare the catalysts with 1wt% of Pt. The effect of the support and the reduction temperature (473 K or 773 K) were analyzed. The materials were characterized by X-ray diffraction (XRD), nitrogen physisorption (77 K), hydrogen chemisorption (298 K), transmission electron microscopy (TEM), temperature programmed reduction (H2-TPR) and temperature programmed desorption of ammonia (NH3-TPD). The results showed that Pt/ TiO2 (HT) catalyst had a higher yield (60%) toward m- phenylenediamine and conversion level (98.2%) of m-dinitrobenzene. This behavior can be attributed to the reduction of PtO crystallites to metallic Pt, small particle size and the strong metal-support interaction due to the migration of TiO species on the Pt crystallites.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.56 n.3 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072011000300016en10.4067/S0717-97072011000300016
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	m-dinitrobenzene m-phenylenediamine hydrogenation fine chemical
spellingShingle	m-dinitrobenzene m-phenylenediamine hydrogenation fine chemical ROJAS,HUGO BORDA,GLORIA REYES,PATRICIO BRIJALDO,MARÍA VALENCIA,JESÚS LIQUID-PHASE HYDROGENATION OF m-DINITROBENZENE OVER PLATINUM CATALYSTS
description	The m-dinitrobenzene hydrogenation to m-phenylenediamine in liquid phase was studied with platinum supported on SiO2, TiO2, Al2O3 and Nb2O5 catalysts. Incipient impregnation method was used to prepare the catalysts with 1wt% of Pt. The effect of the support and the reduction temperature (473 K or 773 K) were analyzed. The materials were characterized by X-ray diffraction (XRD), nitrogen physisorption (77 K), hydrogen chemisorption (298 K), transmission electron microscopy (TEM), temperature programmed reduction (H2-TPR) and temperature programmed desorption of ammonia (NH3-TPD). The results showed that Pt/ TiO2 (HT) catalyst had a higher yield (60%) toward m- phenylenediamine and conversion level (98.2%) of m-dinitrobenzene. This behavior can be attributed to the reduction of PtO crystallites to metallic Pt, small particle size and the strong metal-support interaction due to the migration of TiO species on the Pt crystallites.
author	ROJAS,HUGO BORDA,GLORIA REYES,PATRICIO BRIJALDO,MARÍA VALENCIA,JESÚS
author_facet	ROJAS,HUGO BORDA,GLORIA REYES,PATRICIO BRIJALDO,MARÍA VALENCIA,JESÚS
author_sort	ROJAS,HUGO
title	LIQUID-PHASE HYDROGENATION OF m-DINITROBENZENE OVER PLATINUM CATALYSTS
title_short	LIQUID-PHASE HYDROGENATION OF m-DINITROBENZENE OVER PLATINUM CATALYSTS
title_full	LIQUID-PHASE HYDROGENATION OF m-DINITROBENZENE OVER PLATINUM CATALYSTS
title_fullStr	LIQUID-PHASE HYDROGENATION OF m-DINITROBENZENE OVER PLATINUM CATALYSTS
title_full_unstemmed	LIQUID-PHASE HYDROGENATION OF m-DINITROBENZENE OVER PLATINUM CATALYSTS
title_sort	liquid-phase hydrogenation of m-dinitrobenzene over platinum catalysts
publisher	Sociedad Chilena de Química
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072011000300016
work_keys_str_mv	AT rojashugo liquidphasehydrogenationofmdinitrobenzeneoverplatinumcatalysts AT bordagloria liquidphasehydrogenationofmdinitrobenzeneoverplatinumcatalysts AT reyespatricio liquidphasehydrogenationofmdinitrobenzeneoverplatinumcatalysts AT brijaldomaria liquidphasehydrogenationofmdinitrobenzeneoverplatinumcatalysts AT valenciajesus liquidphasehydrogenationofmdinitrobenzeneoverplatinumcatalysts
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LIQUID-PHASE HYDROGENATION OF m-DINITROBENZENE OVER PLATINUM CATALYSTS

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