Preparation and characterization oF Ru-Sn/Al2O3 catalysts for the hydrogenation of fatty acid methyl esters
Ru-Sn/Al2O3 catalysts with different Sn loadings were prepared by the coimpregnation method. Several characterization techniques such as TPR, pyridine TPD and catalytic tests for dehydrogenation and hydrogenolysis were used to evaluate and compare such catalysts. TPR results indicate that Sn is depo...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2010-01-01
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| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000200007 |
| _version_ | 1819149472340377600 |
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| author | Vanina A. Mazzieri Mario R. Sad Carlos R. Vera Carlos L. Pieck Ricardo Grau |
| author_facet | Vanina A. Mazzieri Mario R. Sad Carlos R. Vera Carlos L. Pieck Ricardo Grau |
| author_sort | Vanina A. Mazzieri |
| collection | DOAJ |
| description | Ru-Sn/Al2O3 catalysts with different Sn loadings were prepared by the coimpregnation method. Several characterization techniques such as TPR, pyridine TPD and catalytic tests for dehydrogenation and hydrogenolysis were used to evaluate and compare such catalysts. TPR results indicate that Sn is deposited both onto the support and as species strongly interacting with Ru. Such non selective deposition modifies the acid and metallic functions of the catalysts. Both total acidity and acid strength distribution are affected: total acidity decreases and new sites of lower acid strength are created. Both dehydrogenating and hydrogenolytic activities are strongly diminished by the addition of Sn. Results of catalytic tests for methyl oleate hydrogenation indicate that methyl stearate is the main product, with only minute amounts of oleyl alcohol produced, and that the addition of Sn diminishes the hydrogenation activity. |
| first_indexed | 2024-12-22T14:02:09Z |
| format | Article |
| id | doaj.art-4360169f817b4af8a918cfcb5bab5106 |
| institution | Directory Open Access Journal |
| issn | 0100-4042 1678-7064 |
| language | English |
| last_indexed | 2024-12-22T14:02:09Z |
| publishDate | 2010-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-4360169f817b4af8a918cfcb5bab51062022-12-21T18:23:22ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642010-01-0133226927210.1590/S0100-40422010000200007Preparation and characterization oF Ru-Sn/Al2O3 catalysts for the hydrogenation of fatty acid methyl estersVanina A. MazzieriMario R. SadCarlos R. VeraCarlos L. PieckRicardo GrauRu-Sn/Al2O3 catalysts with different Sn loadings were prepared by the coimpregnation method. Several characterization techniques such as TPR, pyridine TPD and catalytic tests for dehydrogenation and hydrogenolysis were used to evaluate and compare such catalysts. TPR results indicate that Sn is deposited both onto the support and as species strongly interacting with Ru. Such non selective deposition modifies the acid and metallic functions of the catalysts. Both total acidity and acid strength distribution are affected: total acidity decreases and new sites of lower acid strength are created. Both dehydrogenating and hydrogenolytic activities are strongly diminished by the addition of Sn. Results of catalytic tests for methyl oleate hydrogenation indicate that methyl stearate is the main product, with only minute amounts of oleyl alcohol produced, and that the addition of Sn diminishes the hydrogenation activity.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000200007hydrogenationmethyl estersRu-Sn/Al2O3 |
| spellingShingle | Vanina A. Mazzieri Mario R. Sad Carlos R. Vera Carlos L. Pieck Ricardo Grau Preparation and characterization oF Ru-Sn/Al2O3 catalysts for the hydrogenation of fatty acid methyl esters Química Nova hydrogenation methyl esters Ru-Sn/Al2O3 |
| title | Preparation and characterization oF Ru-Sn/Al2O3 catalysts for the hydrogenation of fatty acid methyl esters |
| title_full | Preparation and characterization oF Ru-Sn/Al2O3 catalysts for the hydrogenation of fatty acid methyl esters |
| title_fullStr | Preparation and characterization oF Ru-Sn/Al2O3 catalysts for the hydrogenation of fatty acid methyl esters |
| title_full_unstemmed | Preparation and characterization oF Ru-Sn/Al2O3 catalysts for the hydrogenation of fatty acid methyl esters |
| title_short | Preparation and characterization oF Ru-Sn/Al2O3 catalysts for the hydrogenation of fatty acid methyl esters |
| title_sort | preparation and characterization of ru sn al2o3 catalysts for the hydrogenation of fatty acid methyl esters |
| topic | hydrogenation methyl esters Ru-Sn/Al2O3 |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000200007 |
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