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...
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ftunivnantes:oai:HAL:hal-00286397v1 2023-05-15T14:15:33+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-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) 2008 https://hal.science/hal-00286397 https://doi.org/10.1016/j.apcata.2008.04.002 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2008.04.002 hal-00286397 https://hal.science/hal-00286397 doi:10.1016/j.apcata.2008.04.002 ISSN: 0926-860X Applied Catalysis A : General https://hal.science/hal-00286397 Applied Catalysis A : General, 2008, 344, pp.70-77. ⟨10.1016/j.apcata.2008.04.002⟩ Lipase Transesterification Silica Aerogel Ionic liquids "Lipase" "Transesterification" "Silica" "Aerogel" "Ionic liquids" [SDE.ES]Environmental Sciences/Environmental and Society [CHIM.CATA]Chemical Sciences/Catalysis info:eu-repo/semantics/article Journal articles 2008 ftunivnantes https://doi.org/10.1016/j.apcata.2008.04.002 2023-02-08T05:42:18Z 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* Université de Nantes: HAL-UNIV-NANTES Fluka ENVELOPE(17.567,17.567,66.017,66.017) Applied Catalysis A: General 344 1-2 70 77 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Lipase Transesterification Silica Aerogel Ionic liquids "Lipase" "Transesterification" "Silica" "Aerogel" "Ionic liquids" [SDE.ES]Environmental Sciences/Environmental and Society [CHIM.CATA]Chemical Sciences/Catalysis |
spellingShingle |
Lipase Transesterification Silica Aerogel Ionic liquids "Lipase" "Transesterification" "Silica" "Aerogel" "Ionic liquids" [SDE.ES]Environmental Sciences/Environmental and Society [CHIM.CATA]Chemical Sciences/Catalysis 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 "Lipase" "Transesterification" "Silica" "Aerogel" "Ionic liquids" [SDE.ES]Environmental Sciences/Environmental and Society [CHIM.CATA]Chemical Sciences/Catalysis |
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-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
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://hal.science/hal-00286397 https://doi.org/10.1016/j.apcata.2008.04.002 |
long_lat |
ENVELOPE(17.567,17.567,66.017,66.017) |
geographic |
Fluka |
geographic_facet |
Fluka |
genre |
antartic* |
genre_facet |
antartic* |
op_source |
ISSN: 0926-860X Applied Catalysis A : General https://hal.science/hal-00286397 Applied Catalysis A : General, 2008, 344, pp.70-77. ⟨10.1016/j.apcata.2008.04.002⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2008.04.002 hal-00286397 https://hal.science/hal-00286397 doi:10.1016/j.apcata.2008.04.002 |
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 |
_version_ |
1766287911927414784 |