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The Epoxidation of Limonene over the TS-1 and Ti-SBA-15 Catalysts

Limonene belongs to a group of very important intermediates used in the production of fine chemicals. This monoterpene compound can be obtained from peels of oranges or lemon which are a (biomass) waste from the orange juice industry. Thus, limonene is a renewable, easy available and a relatively ch...

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Autor principal: Wróblewska, Agnieszka
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6270933/
https://www.ncbi.nlm.nih.gov/pubmed/25460313
http://dx.doi.org/10.3390/molecules191219907
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author Wróblewska, Agnieszka
author_facet Wróblewska, Agnieszka
author_sort Wróblewska, Agnieszka
collection PubMed
description Limonene belongs to a group of very important intermediates used in the production of fine chemicals. This monoterpene compound can be obtained from peels of oranges or lemon which are a (biomass) waste from the orange juice industry. Thus, limonene is a renewable, easy available and a relatively cheap compound. This work presents preliminary studies on the process of limonene epoxidation over zeolite type catalysts such as: TS-1 and Ti-SBA-15. In these studies methanol was used as a solvent and as an oxidizing agent a 60 wt % hydrogen peroxide solution was applied. The activity of each catalyst was investigated for four chosen temperatures (0 °C, 40 °C, 80 °C and 120 °C). The reaction time was changed from 0.5 to 24 h. For each catalyst the most beneficial conditions (the appropriate temperature and the reaction time) have been established. The obtained results were compared and the most active catalyst was chosen. These studies have also shown different possible ways of limonene transformation, not only in the direction of 1,2-epoxylimonene and its corresponding diol, but also in direction of carveol, carvone and perillyl alcohol—compounds with a lot of applications. The possible mechanisms of formation of the allylic oxidation products were proposed.
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spelling pubmed-62709332018-12-28 The Epoxidation of Limonene over the TS-1 and Ti-SBA-15 Catalysts Wróblewska, Agnieszka Molecules Article Limonene belongs to a group of very important intermediates used in the production of fine chemicals. This monoterpene compound can be obtained from peels of oranges or lemon which are a (biomass) waste from the orange juice industry. Thus, limonene is a renewable, easy available and a relatively cheap compound. This work presents preliminary studies on the process of limonene epoxidation over zeolite type catalysts such as: TS-1 and Ti-SBA-15. In these studies methanol was used as a solvent and as an oxidizing agent a 60 wt % hydrogen peroxide solution was applied. The activity of each catalyst was investigated for four chosen temperatures (0 °C, 40 °C, 80 °C and 120 °C). The reaction time was changed from 0.5 to 24 h. For each catalyst the most beneficial conditions (the appropriate temperature and the reaction time) have been established. The obtained results were compared and the most active catalyst was chosen. These studies have also shown different possible ways of limonene transformation, not only in the direction of 1,2-epoxylimonene and its corresponding diol, but also in direction of carveol, carvone and perillyl alcohol—compounds with a lot of applications. The possible mechanisms of formation of the allylic oxidation products were proposed. MDPI 2014-11-28 /pmc/articles/PMC6270933/ /pubmed/25460313 http://dx.doi.org/10.3390/molecules191219907 Text en © 2014 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wróblewska, Agnieszka
The Epoxidation of Limonene over the TS-1 and Ti-SBA-15 Catalysts
title The Epoxidation of Limonene over the TS-1 and Ti-SBA-15 Catalysts
title_full The Epoxidation of Limonene over the TS-1 and Ti-SBA-15 Catalysts
title_fullStr The Epoxidation of Limonene over the TS-1 and Ti-SBA-15 Catalysts
title_full_unstemmed The Epoxidation of Limonene over the TS-1 and Ti-SBA-15 Catalysts
title_short The Epoxidation of Limonene over the TS-1 and Ti-SBA-15 Catalysts
title_sort epoxidation of limonene over the ts-1 and ti-sba-15 catalysts
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6270933/
https://www.ncbi.nlm.nih.gov/pubmed/25460313
http://dx.doi.org/10.3390/molecules191219907
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