MgAlLi Mixed Oxides Derived from Hydrotalcite for Catalytic Transesterification
MgAl hydrotalcite was synthesized and used as support for Li impregnation. MgAlLi oxides were obtained from heat treatment of the Li/MgAl hydrotalcite. These materials were characterized and evaluated as catalysts for model transesterification reactions. MgAl showed negligible activity under mild re...
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| Veröffentlicht in: | Catalysis letters 2011-09, Vol.141 (9), p.1316-1323 |
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| creator | Castro, Cínthia S. Cardoso, Dilson Nascente, Pedro A. P. Assaf, José Mansur |
| description | MgAl hydrotalcite was synthesized and used as support for Li impregnation. MgAlLi oxides were obtained from heat treatment of the Li/MgAl hydrotalcite. These materials were characterized and evaluated as catalysts for model transesterification reactions. MgAl showed negligible activity under mild reaction conditions (50 °C and 0.5 h) whereas Li incorporation greatly increased the activity. The activities were correlated to their basicity determined by TPD of CO
2
. Reuse tests showed catalyst deactivation after the third cycle, probably due to lithium leaching. However, the contribution to a homogeneous reaction has been dismissed. MgAlLi revealed to be a promising catalysts for transesterification reaction and thus for biodiesel production.
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| doi_str_mv | 10.1007/s10562-011-0650-y |
| format | Article |
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2
. Reuse tests showed catalyst deactivation after the third cycle, probably due to lithium leaching. However, the contribution to a homogeneous reaction has been dismissed. MgAlLi revealed to be a promising catalysts for transesterification reaction and thus for biodiesel production.
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2
. Reuse tests showed catalyst deactivation after the third cycle, probably due to lithium leaching. However, the contribution to a homogeneous reaction has been dismissed. MgAlLi revealed to be a promising catalysts for transesterification reaction and thus for biodiesel production.
Graphical Abstract</description><subject>Analysis</subject><subject>Basicity</subject><subject>Biodiesel fuels</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Chemical synthesis</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Deactivation</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Heat treatment</subject><subject>Industrial Chemistry/Chemical Engineering</subject><subject>Leaching</subject><subject>Lithium</subject><subject>Mixed oxides</subject><subject>Organometallic Chemistry</subject><subject>Oxides</subject><subject>Physical Chemistry</subject><subject>Theory of reactions, general kinetics. Catalysis. 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P. ; Assaf, José Mansur</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c419t-d2fdd989b242d9d2ddda1ba07b81cf7d6480d8ce3b26b5c30fb859cee5fe17273</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Analysis</topic><topic>Basicity</topic><topic>Biodiesel fuels</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Chemical synthesis</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Deactivation</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Heat treatment</topic><topic>Industrial Chemistry/Chemical Engineering</topic><topic>Leaching</topic><topic>Lithium</topic><topic>Mixed oxides</topic><topic>Organometallic Chemistry</topic><topic>Oxides</topic><topic>Physical Chemistry</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><topic>Transesterification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Castro, Cínthia S.</creatorcontrib><creatorcontrib>Cardoso, Dilson</creatorcontrib><creatorcontrib>Nascente, Pedro A. P.</creatorcontrib><creatorcontrib>Assaf, José Mansur</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Gale In Context: Science</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Catalysis letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Castro, Cínthia S.</au><au>Cardoso, Dilson</au><au>Nascente, Pedro A. P.</au><au>Assaf, José Mansur</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>MgAlLi Mixed Oxides Derived from Hydrotalcite for Catalytic Transesterification</atitle><jtitle>Catalysis letters</jtitle><stitle>Catal Lett</stitle><date>2011-09-01</date><risdate>2011</risdate><volume>141</volume><issue>9</issue><spage>1316</spage><epage>1323</epage><pages>1316-1323</pages><issn>1011-372X</issn><eissn>1572-879X</eissn><abstract>MgAl hydrotalcite was synthesized and used as support for Li impregnation. MgAlLi oxides were obtained from heat treatment of the Li/MgAl hydrotalcite. These materials were characterized and evaluated as catalysts for model transesterification reactions. MgAl showed negligible activity under mild reaction conditions (50 °C and 0.5 h) whereas Li incorporation greatly increased the activity. The activities were correlated to their basicity determined by TPD of CO
2
. Reuse tests showed catalyst deactivation after the third cycle, probably due to lithium leaching. However, the contribution to a homogeneous reaction has been dismissed. MgAlLi revealed to be a promising catalysts for transesterification reaction and thus for biodiesel production.
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| subjects | Analysis Basicity Biodiesel fuels Catalysis Catalysts Chemical synthesis Chemistry Chemistry and Materials Science Deactivation Exact sciences and technology General and physical chemistry Heat treatment Industrial Chemistry/Chemical Engineering Leaching Lithium Mixed oxides Organometallic Chemistry Oxides Physical Chemistry Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Transesterification |
| title | MgAlLi Mixed Oxides Derived from Hydrotalcite for Catalytic Transesterification |
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