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XAFS, XPS characterization of cerium promoted Ti-TUD-1 catalyst and it's activity for styrene oxidation reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
50169 46783 2014 5 PDF Available
Title
XAFS, XPS characterization of cerium promoted Ti-TUD-1 catalyst and it's activity for styrene oxidation reaction
Abstract

•Ce doped Ti-TUD-1 material was prepared & characterized by different techniques.•The purpose doping is to change the electrophilicity of Ti site in TUD-1 matrix.•The electrophilicity of Ti site facilitate the formation of hydroperoxo species.•This cerium doped Ti-TUD-1 material gives improve conversion of styrene.

Titanosilicate and many others transition metals deposited mesoporous silica materials are well recognized oxidation catalysts in different types of oxidation reactions, such as propylene oxidation, styrene oxidation, CO oxidation, etc. To increase the electrophilic character of Ti-site in TUD-1 framework cerium was incorporated during the synthesis of Ti-TUD-1 material. The synthesized material was characterized by N2 adsorption–desorption isotherm, XPS, XANES and EXAFS techniques. From XPS result it is found that all Ti is present in framework position by the formation of TiOSi bond in Ti-TUD-1 matrix. From EXAFS experiment it is found that after cerium doping, the electrophilic character of the Ti site was increased resulting more styrene oxidation activity.

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Keywords
Titanosilicate; Ti-TUD-1; Cerium; Styrene; Oxidation
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XAFS, XPS characterization of cerium promoted Ti-TUD-1 catalyst and it's activity for styrene oxidation reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 46, 10 February 2014, Pages 123–127
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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