Onto Hybrid Organic-inorganic Mesoporous Materials

Based on MCM-41 mesoporous silica, three different hybrid organic-inorganic mesoporous materials were synthesized. Functionalization and hydrophobization of MCM-41 with 3-aminopropyltriethoxysilane (APTES), chlorotrimethylsila-ne (CTMS), and propyltrimethoxysilane (PTMS) were carried out by post-syn...

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Bibliographic Details
Main Authors: Candida Lipase, B Immobilization, Brindusa Dragoi, Emil Dumitriu
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
MCM-41
functionalization
immobilization
Candida antarctica lipase B
alcoholysis
Antarc*
Antarctica
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.508.790
http://acta.chem-soc.si/55/55-2-277.pdf
Description
Summary:Based on MCM-41 mesoporous silica, three different hybrid organic-inorganic mesoporous materials were synthesized. Functionalization and hydrophobization of MCM-41 with 3-aminopropyltriethoxysilane (APTES), chlorotrimethylsila-ne (CTMS), and propyltrimethoxysilane (PTMS) were carried out by post-synthesis method after the removal of hexa-decyltrimethylammonium bromide used as template. The effect of grafted organosilanes on the mesostructural proper-ties of the resulted hybrid materials was systematically analyzed by different techniques such as X-ray diffraction (XRD), N2 adsorption isotherms, FT-IR and 29Si MAS NMR. Functionalized MCM-41 samples were used as support for Candida antarctica lipase B (CALB) immobilization. The activity of the new biocatalysts was evaluated in the alco-holysis of ethyl acetate with two alcohols (1-hexanol and 1-butanol, respectively) and compared with that of the free enzyme. All reactions were performed in organic media using n-hexane as solvent.

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