Synthesis, characterization and catalytic activity of highly dispersed Mo-SBA-15
Molybdenum-containing SBA-15 materials have been prepared using a co-condensation method with a wide range of metal loadings under acidic conditions and using non-ionic surfactants. These materials display good catalytic activity in the epoxidation of olefins with alkyl hydroperoxides, being the cat...
| Authors: | , , , , , |
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| Format: | article |
| Publication Date: | 2007 |
| Country: | España |
| Institution: | Universidad Rey Juan Carlos |
| Repository: | BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos |
| OAI Identifier: | oai:burjcdigital.urjc.es:10115/3745 |
| Online Access: | http://hdl.handle.net/10115/3745 |
| Access Level: | Open access |
| Keyword: | Materiales 2391 Química Ambiental |
| Summary: | Molybdenum-containing SBA-15 materials have been prepared using a co-condensation method with a wide range of metal loadings under acidic conditions and using non-ionic surfactants. These materials display good catalytic activity in the epoxidation of olefins with alkyl hydroperoxides, being the catalytic activity correlated with the nature of supported molybdenum species. The immobilized metal species show different stabilities against leaching depending on their nature. Reutilization catalytic tests indicate that some fraction of the molybdenum show a high stability and it seems to be responsible for the major part of the catalytic activity of these materials. Stable molybdenum species use in a very efficient manner the alkyl hydroperoxide in the epoxidation of olefins whereas leached species leads to non-oxidative consumption of the oxidant and promote secondary reactions. |
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