Transesterification of a vegetal oil with methanol catalyzed by a silica fibre reinforced aerogel encapsulated lipase
International audience A commercial lipase solution from Candida antartica, Lipozyme1, was encapsulated in silica aerogels reinforced with silica quartz fibre felt. This biocatalyst was applied in biodiesel synthesis by direct transesterification of sunflower seed oil with methanol, without any othe...
Published in: | Applied Catalysis A: General |
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fttriple:oai:gotriple.eu:10670/1.tp9cql 2023-05-15T14:15:40+02:00 Transesterification of a vegetal oil with methanol catalyzed by a silica fibre reinforced aerogel encapsulated lipase Nassreddine, S. Karout, A. Christ, M. L. Pierre, A. C. Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC) 2008-01-01 https://doi.org/10.1016/j.apcata.2008.04.002 https://hal.archives-ouvertes.fr/hal-00286397 en eng HAL CCSD Elsevier hal-00286397 doi:10.1016/j.apcata.2008.04.002 10670/1.tp9cql https://hal.archives-ouvertes.fr/hal-00286397 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0926-860X Applied Catalysis A : General Applied Catalysis A : General, Elsevier, 2008, 344, pp.70-77. ⟨10.1016/j.apcata.2008.04.002⟩ Lipase Transesterification Silica Aerogel Ionic liquids geo socio Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2008 fttriple https://doi.org/10.1016/j.apcata.2008.04.002 2023-01-22T17:37:22Z International audience A commercial lipase solution from Candida antartica, Lipozyme1, was encapsulated in silica aerogels reinforced with silica quartz fibre felt. This biocatalyst was applied in biodiesel synthesis by direct transesterification of sunflower seed oil with methanol, without any other solvent. With a molar ratio of methanol to oil of 1, the encapsulated enzyme achieved ~90% methanol conversion after 50 h at 40°C. The recycling activity increased by ~40% after the first test, then it slowly decreased in further tests to reach an activity still 20% higher than initially, during the fifth test. Textural and structural analysis of the aerogels before and after catalytic tests showed that this improvement was associated with a modification of the liquid medium inside the aerogel, by preferential adsorption of glycerol. The aerogel samples were also compared to a commercial CALB product immobilized on polymer beads with a different enzyme loading, from Fluka. This product showed a better activity during the first test but its activity decreased by 20% during a second test. Article in Journal/Newspaper antartic* Unknown Fluka ENVELOPE(17.567,17.567,66.017,66.017) Applied Catalysis A: General 344 1-2 70 77 |
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Unknown |
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language |
English |
topic |
Lipase Transesterification Silica Aerogel Ionic liquids geo socio |
spellingShingle |
Lipase Transesterification Silica Aerogel Ionic liquids geo socio Nassreddine, S. Karout, A. Christ, M. L. Pierre, A. C. Transesterification of a vegetal oil with methanol catalyzed by a silica fibre reinforced aerogel encapsulated lipase |
topic_facet |
Lipase Transesterification Silica Aerogel Ionic liquids geo socio |
description |
International audience A commercial lipase solution from Candida antartica, Lipozyme1, was encapsulated in silica aerogels reinforced with silica quartz fibre felt. This biocatalyst was applied in biodiesel synthesis by direct transesterification of sunflower seed oil with methanol, without any other solvent. With a molar ratio of methanol to oil of 1, the encapsulated enzyme achieved ~90% methanol conversion after 50 h at 40°C. The recycling activity increased by ~40% after the first test, then it slowly decreased in further tests to reach an activity still 20% higher than initially, during the fifth test. Textural and structural analysis of the aerogels before and after catalytic tests showed that this improvement was associated with a modification of the liquid medium inside the aerogel, by preferential adsorption of glycerol. The aerogel samples were also compared to a commercial CALB product immobilized on polymer beads with a different enzyme loading, from Fluka. This product showed a better activity during the first test but its activity decreased by 20% during a second test. |
author2 |
Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC) |
format |
Article in Journal/Newspaper |
author |
Nassreddine, S. Karout, A. Christ, M. L. Pierre, A. C. |
author_facet |
Nassreddine, S. Karout, A. Christ, M. L. Pierre, A. C. |
author_sort |
Nassreddine, S. |
title |
Transesterification of a vegetal oil with methanol catalyzed by a silica fibre reinforced aerogel encapsulated lipase |
title_short |
Transesterification of a vegetal oil with methanol catalyzed by a silica fibre reinforced aerogel encapsulated lipase |
title_full |
Transesterification of a vegetal oil with methanol catalyzed by a silica fibre reinforced aerogel encapsulated lipase |
title_fullStr |
Transesterification of a vegetal oil with methanol catalyzed by a silica fibre reinforced aerogel encapsulated lipase |
title_full_unstemmed |
Transesterification of a vegetal oil with methanol catalyzed by a silica fibre reinforced aerogel encapsulated lipase |
title_sort |
transesterification of a vegetal oil with methanol catalyzed by a silica fibre reinforced aerogel encapsulated lipase |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://doi.org/10.1016/j.apcata.2008.04.002 https://hal.archives-ouvertes.fr/hal-00286397 |
long_lat |
ENVELOPE(17.567,17.567,66.017,66.017) |
geographic |
Fluka |
geographic_facet |
Fluka |
genre |
antartic* |
genre_facet |
antartic* |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0926-860X Applied Catalysis A : General Applied Catalysis A : General, Elsevier, 2008, 344, pp.70-77. ⟨10.1016/j.apcata.2008.04.002⟩ |
op_relation |
hal-00286397 doi:10.1016/j.apcata.2008.04.002 10670/1.tp9cql https://hal.archives-ouvertes.fr/hal-00286397 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1016/j.apcata.2008.04.002 |
container_title |
Applied Catalysis A: General |
container_volume |
344 |
container_issue |
1-2 |
container_start_page |
70 |
op_container_end_page |
77 |
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1766287984107192320 |