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Continuous hydrothermal flow syntheses of transition metal oxide doped CexTiO2 nanopowders for catalytic oxidation of toluene

Paper ID Volume ID Publish Year Pages File Format Full-Text
55766 47063 2011 7 PDF Available
Title
Continuous hydrothermal flow syntheses of transition metal oxide doped CexTiO2 nanopowders for catalytic oxidation of toluene
Abstract

A series of transition metal oxides doped CexTiO2 samples were synthesized using a continuous hydrothermal flow synthesis (CHFS) method. The resultant samples were then investigated using a range of analytical methods, including XPS, X-ray powder diffraction, H2-TPR, TEM and BET surface area measurements. Experimental results showed that the samples were highly crystalline with remarkably high surface areas (in the range of 200–300 m2 g−1), which were ca. two-fold higher than those synthesized via more conventional routes. The Ce0.05TiO2 sample revealed a good catalytic performance in toluene oxidation, which was subsequently utilized for the optimization of transition metal oxide doping. After screening MnOx, CrOx and CuOx doping, it was found that they had all led to significant enhancements in the activity for toluene conversion, particularly for CuOx doped sample, which showed a superior performance (T90 = 200 °C) for toluene oxidation, comparable to some noble metal catalysts.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (155 K)Download as PowerPoint slideHighlights► The CeMTi (M = Cu, Mn, Cr) nanocatalysts were synthesized herein using a CHFS route. ► The CHFS route has yielded products with remarkably high surface area. ► The CeCuTi sample revealed a comparable activity to some noble metal catalysts. ► The CHFS route was a promising technique for industrial application.

Keywords
CHFS, continuous hydrothermal flow synthesis; CeMTi, Ce0.035M0.015TiO2 (M = Cu, Mn, Cr) synthesized using a continuous hydrothermal flow synthesis routeToluene oxidation; Supercritical water; Transition meal oxide; Ceria; Titania; Continuous
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Continuous hydrothermal flow syntheses of transition metal oxide doped CexTiO2 nanopowders for catalytic oxidation of toluene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 175, Issue 1, 25 October 2011, Pages 386–392
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
Online Support
Any Questions? feel free to contact us