Transesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacids
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFBA |
Texto Completo: | http://repositorio.ufba.br/ri/handle/ri/14348 |
Resumo: | Texto completo: acesso restrito. p. 69-76 |
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Morin, P.Hamad, B.Sapaly, G.Rocha, M. G. CarneiroOliveira, P. G. Pries deGonzalez, W. A.Sales, E. AndradeEssayem, NadineMorin, P.Hamad, B.Sapaly, G.Rocha, M. G. CarneiroOliveira, P. G. Pries deGonzalez, W. A.Sales, E. AndradeEssayem, Nadine2014-01-14T11:19:49Z20070926-860Xhttp://repositorio.ufba.br/ri/handle/ri/14348v. 330, n. 1-2Texto completo: acesso restrito. p. 69-76Heteropolyacids (HPA) with Keggin structure were evaluated as homogeneous Br∅nsted acid catalysts in the reaction of rapeseed oil transesterification with methanol and ethanol at 358 K and atmospheric pressure. Rapeseed oil transesterification with ethanol over anhydrous Keggin HPAs leads to higher conversion level than H2SO4 compared at equivalent H+ concentration and H2O/H+ molar ratio. By contrast, Phosphoric acid, a quite weaker mineral acid, structurally close to H3PW12O40, is not operative under similar conditions. This demonstrates the advantages of strong Br∅nsted acids in vegetable oil transesterification with ethanol in mild conditions. It is worth noticing that differences in acid strength between anhydrous Keggin heteropolyacids, H3PW12O40, H4SiW12O40, H3PMo12O40, H4SiMo12O40, measured by calorimetry, did not correlate simply the catalytic activity. Indeed, the proton solvation with water molecule was shown to be a crucial parameter. Then, Mo samples exhibited higher activities due to their ability to lose crystallization water at lower temperatures compared to W samples. Finally, it was shown that higher transesterification rates were obtained with ethanol than methanol in presence of HPA.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-14T11:19:49Z No. of bitstreams: 1 1-s2.0-S0926860X07004292-main.pdf: 517530 bytes, checksum: 5bbe4398ded28ab596d16105dd10ee44 (MD5)Made available in DSpace on 2014-01-14T11:19:49Z (GMT). No. of bitstreams: 1 1-s2.0-S0926860X07004292-main.pdf: 517530 bytes, checksum: 5bbe4398ded28ab596d16105dd10ee44 (MD5) Previous issue date: 2007http://dx.doi.org/10.1016/j.apcata.2007.07.011reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBABiodieselTransesterificationRapeseed oilVegetable oilHeteropolyacidsTransesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacidsApplied Catalysis A: Generalinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINAL1-s2.0-S0926860X07004292-main.pdf1-s2.0-S0926860X07004292-main.pdfapplication/pdf517530https://repositorio.ufba.br/bitstream/ri/14348/1/1-s2.0-S0926860X07004292-main.pdf5bbe4398ded28ab596d16105dd10ee44MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14348/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXT1-s2.0-S0926860X07004292-main.pdf.txt1-s2.0-S0926860X07004292-main.pdf.txtExtracted texttext/plain35299https://repositorio.ufba.br/bitstream/ri/14348/3/1-s2.0-S0926860X07004292-main.pdf.txte233ccd20cf243ac062b0d573b8a0c96MD53ri/143482022-08-08 13:19:13.903oai:repositorio.ufba.br:ri/14348VGVybW8gZGUgTGljZW7vv71hLCBu77+9byBleGNsdXNpdm8sIHBhcmEgbyBkZXDvv71zaXRvIG5vIFJlcG9zaXTvv71yaW8gSW5zdGl0dWNpb25hbCBkYSBVRkJBLgoKIFBlbG8gcHJvY2Vzc28gZGUgc3VibWlzc++/vW8gZGUgZG9jdW1lbnRvcywgbyBhdXRvciBvdSBzZXUgcmVwcmVzZW50YW50ZSBsZWdhbCwgYW8gYWNlaXRhciAKZXNzZSB0ZXJtbyBkZSBsaWNlbu+/vWEsIGNvbmNlZGUgYW8gUmVwb3NpdO+/vXJpbyBJbnN0aXR1Y2lvbmFsIGRhIFVuaXZlcnNpZGFkZSBGZWRlcmFsIGRhIEJhaGlhIApvIGRpcmVpdG8gZGUgbWFudGVyIHVtYSBj77+9cGlhIGVtIHNldSByZXBvc2l077+9cmlvIGNvbSBhIGZpbmFsaWRhZGUsIHByaW1laXJhLCBkZSBwcmVzZXJ2Ye+/ve+/vW8uIApFc3NlcyB0ZXJtb3MsIG7vv71vIGV4Y2x1c2l2b3MsIG1hbnTvv71tIG9zIGRpcmVpdG9zIGRlIGF1dG9yL2NvcHlyaWdodCwgbWFzIGVudGVuZGUgbyBkb2N1bWVudG8gCmNvbW8gcGFydGUgZG8gYWNlcnZvIGludGVsZWN0dWFsIGRlc3NhIFVuaXZlcnNpZGFkZS4KCiBQYXJhIG9zIGRvY3VtZW50b3MgcHVibGljYWRvcyBjb20gcmVwYXNzZSBkZSBkaXJlaXRvcyBkZSBkaXN0cmlidWnvv73vv71vLCBlc3NlIHRlcm1vIGRlIGxpY2Vu77+9YSAKZW50ZW5kZSBxdWU6CgogTWFudGVuZG8gb3MgZGlyZWl0b3MgYXV0b3JhaXMsIHJlcGFzc2Fkb3MgYSB0ZXJjZWlyb3MsIGVtIGNhc28gZGUgcHVibGljYe+/ve+/vWVzLCBvIHJlcG9zaXTvv71yaW8KcG9kZSByZXN0cmluZ2lyIG8gYWNlc3NvIGFvIHRleHRvIGludGVncmFsLCBtYXMgbGliZXJhIGFzIGluZm9ybWHvv73vv71lcyBzb2JyZSBvIGRvY3VtZW50bwooTWV0YWRhZG9zIGVzY3JpdGl2b3MpLgoKIERlc3RhIGZvcm1hLCBhdGVuZGVuZG8gYW9zIGFuc2Vpb3MgZGVzc2EgdW5pdmVyc2lkYWRlIGVtIG1hbnRlciBzdWEgcHJvZHXvv73vv71vIGNpZW5077+9ZmljYSBjb20gCmFzIHJlc3Ryae+/ve+/vWVzIGltcG9zdGFzIHBlbG9zIGVkaXRvcmVzIGRlIHBlcmnvv71kaWNvcy4KCiBQYXJhIGFzIHB1YmxpY2Hvv73vv71lcyBzZW0gaW5pY2lhdGl2YXMgcXVlIHNlZ3VlbSBhIHBvbO+/vXRpY2EgZGUgQWNlc3NvIEFiZXJ0bywgb3MgZGVw77+9c2l0b3MgCmNvbXB1bHPvv71yaW9zIG5lc3NlIHJlcG9zaXTvv71yaW8gbWFudO+/vW0gb3MgZGlyZWl0b3MgYXV0b3JhaXMsIG1hcyBtYW5077+9bSBhY2Vzc28gaXJyZXN0cml0byAKYW8gbWV0YWRhZG9zIGUgdGV4dG8gY29tcGxldG8uIEFzc2ltLCBhIGFjZWl0Ye+/ve+/vW8gZGVzc2UgdGVybW8gbu+/vW8gbmVjZXNzaXRhIGRlIGNvbnNlbnRpbWVudG8KIHBvciBwYXJ0ZSBkZSBhdXRvcmVzL2RldGVudG9yZXMgZG9zIGRpcmVpdG9zLCBwb3IgZXN0YXJlbSBlbSBpbmljaWF0aXZhcyBkZSBhY2Vzc28gYWJlcnRvLgo=Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-08-08T16:19:13Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
dc.title.pt_BR.fl_str_mv |
Transesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacids |
dc.title.alternative.pt_BR.fl_str_mv |
Applied Catalysis A: General |
title |
Transesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacids |
spellingShingle |
Transesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacids Morin, P. Biodiesel Transesterification Rapeseed oil Vegetable oil Heteropolyacids |
title_short |
Transesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacids |
title_full |
Transesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacids |
title_fullStr |
Transesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacids |
title_full_unstemmed |
Transesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacids |
title_sort |
Transesterification of rapeseed oil with ethanol: I. catalysis with homogeneous Keggin heteropolyacids |
author |
Morin, P. |
author_facet |
Morin, P. Hamad, B. Sapaly, G. Rocha, M. G. Carneiro Oliveira, P. G. Pries de Gonzalez, W. A. Sales, E. Andrade Essayem, Nadine |
author_role |
author |
author2 |
Hamad, B. Sapaly, G. Rocha, M. G. Carneiro Oliveira, P. G. Pries de Gonzalez, W. A. Sales, E. Andrade Essayem, Nadine |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Morin, P. Hamad, B. Sapaly, G. Rocha, M. G. Carneiro Oliveira, P. G. Pries de Gonzalez, W. A. Sales, E. Andrade Essayem, Nadine Morin, P. Hamad, B. Sapaly, G. Rocha, M. G. Carneiro Oliveira, P. G. Pries de Gonzalez, W. A. Sales, E. Andrade Essayem, Nadine |
dc.subject.por.fl_str_mv |
Biodiesel Transesterification Rapeseed oil Vegetable oil Heteropolyacids |
topic |
Biodiesel Transesterification Rapeseed oil Vegetable oil Heteropolyacids |
description |
Texto completo: acesso restrito. p. 69-76 |
publishDate |
2007 |
dc.date.issued.fl_str_mv |
2007 |
dc.date.accessioned.fl_str_mv |
2014-01-14T11:19:49Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufba.br/ri/handle/ri/14348 |
dc.identifier.issn.none.fl_str_mv |
0926-860X |
dc.identifier.number.pt_BR.fl_str_mv |
v. 330, n. 1-2 |
identifier_str_mv |
0926-860X v. 330, n. 1-2 |
url |
http://repositorio.ufba.br/ri/handle/ri/14348 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.pt_BR.fl_str_mv |
http://dx.doi.org/10.1016/j.apcata.2007.07.011 |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFBA instname:Universidade Federal da Bahia (UFBA) instacron:UFBA |
instname_str |
Universidade Federal da Bahia (UFBA) |
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UFBA |
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UFBA |
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Repositório Institucional da UFBA |
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Repositório Institucional da UFBA |
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