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The synthesis of chloropropylated MCM-41 through co-condensation technique: The path finding process

Paper ID Volume ID Publish Year Pages File Format Full-Text
42912 45946 2008 8 PDF Available
Title
The synthesis of chloropropylated MCM-41 through co-condensation technique: The path finding process
Abstract

In this study, ionic liquids (ILs) on ordered mesoporous materials were prepared and their catalytic performance in the chemical fixation of CO2 with epoxide to produce cyclic carbonate was investigated. The ionic liquids were generated on chloropropyl functionalized MCM-41 (CP-MS41) through the immobilization of trialkylamines. The first step involved simple condensation under basic conditions yielding CP-MS41, which lead sequentially to R4Cl-MS41. A variety of CP-MS41s were synthesized by manipulating the TEOS to 3-chloropropyltriethoxysilane (ClPTES) ratio, and characterized using a number of physico-chemical measurements including XRD, BET, FT-IR, CP 13C, 29Si MAS-NMR and TG/DTG. 29Si MAS-NMR and FT-IR showed that the ionic liquids formed adduct with the chloropropyl groups attached to the silica surface. The ordering of the mesoporous structure decreased gradually with increasing ClPTES concentration in the synthesis gel. This study reports a methodology for synthesizing hybrid MS41 and solvent extraction techniques. The activity of the immobilized ionic liquids (IILs) was maintained after recycling and was higher in the IILs containing amines with a lower alkyl chain length.

Graphical abstractIonic liquids on ordered mesoporous materials are very useful and effective for chemical fixations of CO2, which is a vital step in the production of cyclic carbonates. In the present study, generation of ionic liquids on chloropropyl functionalized MCM-41 via the immobilization of trialkylamines was attempted. A wide variety of CP-MS41 by manipulating the TEOS to 3-chloropropyltriethoxysilane ratios were synthesized and characterized by a number of physico-chemical measurements.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Hybrid MCM-41; Solvent extraction; Immobilization; Co-condensation; IIL
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 347, Issue 2, 15 September 2008, Pages 192–199
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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