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Hydrothermal incorporation of manganese in the framework of SBA-15

Paper ID Volume ID Publish Year Pages File Format Full-Text
52873 46890 2007 5 PDF Available
Title
Hydrothermal incorporation of manganese in the framework of SBA-15
Abstract

Manganese incorporated SBA-15 was synthesised by pre-hydrolyzing tetraethyl orthosilicate and manganese acetate above the isoelectric point of silica using tri-block copolymer as the template. The synthesised material was characterised by XRD, N2 adsorption, ESR, SEM and AAS techniques. XRD results revealed well-ordered hexagonal array of the materials. ESR spectral studies confirmed the incorporation of manganese in the framework of assynthesised and calcined materials. Synthesis gel of higher pH favoured better incorporation of manganese in the framework. Manganese exists in bivalent and trivalent states in all the materials. Their catalytic activity was examined in the liquid phase oxidation of ethylbenzene using tert-butyl hydroperoxide as the oxidant. Acetophenone, 2-phenylethanol and 1-phenylethanol were obtained as the major products. Ethylbenzene conversion increases with increase of manganese content in the catalyst.

Keywords
MnSBA-15; Pre-hydrolyse; ESR; Ethylbenzene
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Hydrothermal incorporation of manganese in the framework of SBA-15
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 3, March 2007, Pages 493–497
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
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