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Combined alkyl and sulfonic acid functionalization of MCM-41-type silica. Part I. Synthesis and characterization

AuthorsDíaz Carretero, Isabel ; Márquez Álvarez, Carlos ; Mohino, Federico; Pérez Pariente, Joaquín ; Sastre, Enrique
Mesoporous acid catalysts
Sulfonic acid
Fatty acids
Selective esterification
Issue Date2000
CitationJournal of Catalysis
AbstractSingle-step synthesis of well ordered, MCM-41 materials containing simultaneously alkyl (methyl or propyl) and 3-mercaptopropyl groups has been carried out by hydrothermal treatment of gels containing a mixture of dodecyl and hexadecyltrimethylammonium surfactants. A wide range of synthesis conditions has been studied in order to optimize the pore arrangement and to vary the alkyl/mercaptopropyl ratio of the product. A number of characterization techniques suggest that the anchored organic fragments lined the wall channels of the MCM-41 in a close-packed configuration. The mercaptopropyl groups can be oxidized with hydrogen peroxide to sulfonic acid with a high retention of sulfur and no loss of methyl groups
Publisher version (URL)http://dx.doi.org/10.1006/jcat.2000.2899
Appears in Collections:(ICP) Artículos
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