HYDRATION AND ACETYLATION OF LIMONENE: SUPPORTED HETEROPOLYACIDS

The limonene hydration and acetylation in liquid phase catalyzed by phosphotungstic and phosphomolybdic acid bulk and supported on silica and titanium dioxide were studied. The reaction was performed in a batch reactor in acetic acid at 40°C, with magnetic stirring of the reaction mixture. Reaction...

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Autores principales:	AVILA,MARIA CECILIA, COMELLI,NORA A, FIRPO,NORBERTO H, PONZI,ESTHER N, PONZI,MARTA I
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2008
Materias:	Hydration acetylation limonene heteropolyacids -terpineol
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072008000100027
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spelling	oai:scielo:S0717-970720080001000272008-07-03HYDRATION AND ACETYLATION OF LIMONENE: SUPPORTED HETEROPOLYACIDSAVILA,MARIA CECILIACOMELLI,NORA AFIRPO,NORBERTO HPONZI,ESTHER NPONZI,MARTA I Hydration acetylation limonene heteropolyacids -terpineol The limonene hydration and acetylation in liquid phase catalyzed by phosphotungstic and phosphomolybdic acid bulk and supported on silica and titanium dioxide were studied. The reaction was performed in a batch reactor in acetic acid at 40°C, with magnetic stirring of the reaction mixture. Reaction products were analyzed by gaseous chromatography with FID detector using a capillary column for separation of products. The identification of compounds was made with pattern terpenes and by gaseous chromatography with mass spectrometry. All catalysts tested result to be active in the hydration and acetylation reaction of limonene. Catalysts based on phophotungstic acid (HPW) produce larger amount of hydration and acetylation products than phosphomolybdic acid (HPMo) catalyst. Hydration products increase faster than isomerization products when the reaction time is increased. The structure of heteropolyacids and the presence of acid sites Bronsted and Lewis were determined by FTIRinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.53 n.1 20082008-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072008000100027en10.4067/S0717-97072008000100027
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Hydration acetylation limonene heteropolyacids -terpineol
spellingShingle	Hydration acetylation limonene heteropolyacids -terpineol AVILA,MARIA CECILIA COMELLI,NORA A FIRPO,NORBERTO H PONZI,ESTHER N PONZI,MARTA I HYDRATION AND ACETYLATION OF LIMONENE: SUPPORTED HETEROPOLYACIDS
description	The limonene hydration and acetylation in liquid phase catalyzed by phosphotungstic and phosphomolybdic acid bulk and supported on silica and titanium dioxide were studied. The reaction was performed in a batch reactor in acetic acid at 40°C, with magnetic stirring of the reaction mixture. Reaction products were analyzed by gaseous chromatography with FID detector using a capillary column for separation of products. The identification of compounds was made with pattern terpenes and by gaseous chromatography with mass spectrometry. All catalysts tested result to be active in the hydration and acetylation reaction of limonene. Catalysts based on phophotungstic acid (HPW) produce larger amount of hydration and acetylation products than phosphomolybdic acid (HPMo) catalyst. Hydration products increase faster than isomerization products when the reaction time is increased. The structure of heteropolyacids and the presence of acid sites Bronsted and Lewis were determined by FTIR
author	AVILA,MARIA CECILIA COMELLI,NORA A FIRPO,NORBERTO H PONZI,ESTHER N PONZI,MARTA I
author_facet	AVILA,MARIA CECILIA COMELLI,NORA A FIRPO,NORBERTO H PONZI,ESTHER N PONZI,MARTA I
author_sort	AVILA,MARIA CECILIA
title	HYDRATION AND ACETYLATION OF LIMONENE: SUPPORTED HETEROPOLYACIDS
title_short	HYDRATION AND ACETYLATION OF LIMONENE: SUPPORTED HETEROPOLYACIDS
title_full	HYDRATION AND ACETYLATION OF LIMONENE: SUPPORTED HETEROPOLYACIDS
title_fullStr	HYDRATION AND ACETYLATION OF LIMONENE: SUPPORTED HETEROPOLYACIDS
title_full_unstemmed	HYDRATION AND ACETYLATION OF LIMONENE: SUPPORTED HETEROPOLYACIDS
title_sort	hydration and acetylation of limonene: supported heteropolyacids
publisher	Sociedad Chilena de Química
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072008000100027
work_keys_str_mv	AT avilamariacecilia hydrationandacetylationoflimonenesupportedheteropolyacids AT comellinoraa hydrationandacetylationoflimonenesupportedheteropolyacids AT firponorbertoh hydrationandacetylationoflimonenesupportedheteropolyacids AT ponziesthern hydrationandacetylationoflimonenesupportedheteropolyacids AT ponzimartai hydrationandacetylationoflimonenesupportedheteropolyacids
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HYDRATION AND ACETYLATION OF LIMONENE: SUPPORTED HETEROPOLYACIDS

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