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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
12/11/1998 |
Data da última atualização: |
06/12/2022 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
ALVES, R. M.; CORRÊA, J. R. V.; GOMES, M. R. O. |
Afiliação: |
RAFAEL MOYSES ALVES, CPATU; JOÃO ROBERTO VIANA CORRÊA, CPATU; MARIO RODRIGO DE OLIVEIRA GOMES, CPATU. |
Título: |
Avaliação preliminar de matrizes de cupuaçuzeiro (Theobroma grandiflorum) em áreas de produtores de Tomé-Açu, Paraá. |
Ano de publicação: |
1998 |
Fonte/Imprenta: |
In: ENCONTRO DE GENÉTICA DO NORDESTE, 13., 1998, Feira de Santana, BA. Anais. Feira de Santana: Universidade Estadual de Feira de Santana: Sociedade Brasileira de Genética, 1998. |
Páginas: |
p. 359. |
Idioma: |
Português |
Palavras-Chave: |
Agronomic characteristics; Brasil; Característica agronômica; Pará; Selection. |
Thesagro: |
Cupuaçu; Fruta; Seleção; Theobroma Grandiflorum. |
Thesaurus Nal: |
Amazonia; fruits. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/100326/1/2278.pdf
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Marc: |
LEADER 00917nam a2200265 a 4500 001 1398593 005 2022-12-06 008 1998 bl uuuu u00u1 u #d 100 1 $aALVES, R. M. 245 $aAvaliação preliminar de matrizes de cupuaçuzeiro (Theobroma grandiflorum) em áreas de produtores de Tomé-Açu, Paraá.$h[electronic resource] 260 $aIn: ENCONTRO DE GENÉTICA DO NORDESTE, 13., 1998, Feira de Santana, BA. Anais. Feira de Santana: Universidade Estadual de Feira de Santana: Sociedade Brasileira de Genética$c1998 300 $ap. 359. 650 $aAmazonia 650 $afruits 650 $aCupuaçu 650 $aFruta 650 $aSeleção 650 $aTheobroma Grandiflorum 653 $aAgronomic characteristics 653 $aBrasil 653 $aCaracterística agronômica 653 $aPará 653 $aSelection 700 1 $aCORRÊA, J. R. V. 700 1 $aGOMES, M. R. O.
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Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
Biblioteca(s): |
Embrapa Cocais. |
Data corrente: |
10/11/2015 |
Data da última atualização: |
13/04/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
MOURA, C. V. R.; NERES, H. L. S.; LIMA, M. G.; MOURA, E. M.; MOITA NETO, J. M.; OLIVEIRA, J. E. de; LIMA, J. R. O.; STTOLIN, I. M.; ARAUJO, E. C. E. |
Afiliação: |
CARLA V. R. MOURA, UFPI; HAROLDO L. S. NERES, UFPI; MARIANE G. LIMA, UFPI; EDMILSON M. MOURA, UFPI; JOSE M. MOITA NETO, UFPI; JOSÉ E. DE OLIVEIRA, UNESP; JOSÉ R. O. LIMA, UFMA; ILZA M. STTOLIN; EUGENIO CELSO EMERITO ARAUJO, CPACP. |
Título: |
Cr/Al oxide as solid acid catalyst to afford babassu biodisel. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Journal of the Brazilian Chemical Society, Campinas, p. 1-11, 2015. |
Páginas: |
11 p. |
Idioma: |
Inglês |
Conteúdo: |
In this work, it was described the preparation and the characterization of a solid acid catalyst obtained by the mixture of Cr/Al oxides (CRAL). The catalyst was tested in the transesterification reaction of babassu oil with 5% of free fatty acid (FFA). The results of textural and acidity characteristics of CRAL were: area (56 m2 g-1), pore size (7.0 ?m), total acidity (182.28 ?mol g-1), wherein Brönsted sites are the most active. Powder X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) show three phases of the catalyst (Cr2O3/Na2Cr2O3/Al2O3), 0.25:0.25:0.50, respectively. The reaction reached conversion about 98.6% under the conditions: alcohol/oil molar ratio (24:1), catalyst to oil mass ratio of 3.0%, 15 h and 70 ºC. The turnover frequency (TOF) found was 24.5 × 10-4 s-1. Kinetic of the reaction was researched over a temperature range of 60-80 ºC. A pseudo first-order model was proposed with the activation energy (Ea) of 49.18 kJ mol-1. CRAL is active in the biodiesel production for just one cycle, because in the second one it loses its activity. The leaching of catalyst is about 13%, demonstrating that the catalyst is not totally heterogeneous. |
Palavras-Chave: |
Babassu; Heterogeneidade; Óleo de babaçu. |
Thesagro: |
Babaçu; Catalisador; Lixiviação. |
Thesaurus NAL: |
biodiesel. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/132888/1/Cr-Al-Oxide-as-Solid-Acid-Catalyst-to-Afford-Babassu-Biodisel.pdf
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Marc: |
LEADER 02079naa a2200313 a 4500 001 2028282 005 2016-04-13 008 2015 bl uuuu u00u1 u #d 100 1 $aMOURA, C. V. R. 245 $aCr/Al oxide as solid acid catalyst to afford babassu biodisel.$h[electronic resource] 260 $c2015 300 $a11 p. 520 $aIn this work, it was described the preparation and the characterization of a solid acid catalyst obtained by the mixture of Cr/Al oxides (CRAL). The catalyst was tested in the transesterification reaction of babassu oil with 5% of free fatty acid (FFA). The results of textural and acidity characteristics of CRAL were: area (56 m2 g-1), pore size (7.0 ?m), total acidity (182.28 ?mol g-1), wherein Brönsted sites are the most active. Powder X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) show three phases of the catalyst (Cr2O3/Na2Cr2O3/Al2O3), 0.25:0.25:0.50, respectively. The reaction reached conversion about 98.6% under the conditions: alcohol/oil molar ratio (24:1), catalyst to oil mass ratio of 3.0%, 15 h and 70 ºC. The turnover frequency (TOF) found was 24.5 × 10-4 s-1. Kinetic of the reaction was researched over a temperature range of 60-80 ºC. A pseudo first-order model was proposed with the activation energy (Ea) of 49.18 kJ mol-1. CRAL is active in the biodiesel production for just one cycle, because in the second one it loses its activity. The leaching of catalyst is about 13%, demonstrating that the catalyst is not totally heterogeneous. 650 $abiodiesel 650 $aBabaçu 650 $aCatalisador 650 $aLixiviação 653 $aBabassu 653 $aHeterogeneidade 653 $aÓleo de babaçu 700 1 $aNERES, H. L. S. 700 1 $aLIMA, M. G. 700 1 $aMOURA, E. M. 700 1 $aMOITA NETO, J. M. 700 1 $aOLIVEIRA, J. E. de 700 1 $aLIMA, J. R. O. 700 1 $aSTTOLIN, I. M. 700 1 $aARAUJO, E. C. E. 773 $tJournal of the Brazilian Chemical Society, Campinas, p. 1-11, 2015.
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Embrapa Cocais (CPACP) |
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