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Porous NiO nanoflowers and nanourchins: Highly active catalysts for toluene combustion

Paper ID Volume ID Publish Year Pages File Format Full-Text
49988 46775 2012 6 PDF Available
Title
Porous NiO nanoflowers and nanourchins: Highly active catalysts for toluene combustion
Abstract

The NiO samples (NiO-HMTA, NiO-HMTA-PEG, NiO-HMTA-PVP, and NiO-urea, respectively) with a surface area of 31 −66 m2/g and porous nanoflower- and nanourchin-like morphologies were prepared via the hydrothermal route with hexamethylenetetramine (HMTA) or urea as precipitator in the absence or presence of surfactant (poly(ethylene glycol) (PEG) or polyvinyl pyrrolidone (PVP)). It is shown that NiO-HMTA-PVP possessed the highest surface area and Oads concentration and the best reducibility. The NiO-HMTA-PVP catalyst performed the best (T50% = 253 °C and T90% = 266 °C). The excellent catalytic activity of NiO-HMTA-PVP was associated with its large surface area, high Oads concentration, and good reducibility.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► NiO nanoflowers and nanourchins are prepared by the hydrothermal method. ► NiO nanoflowers and nanourchins show a surface area of 31–66 m2/g. ► NiO nanoflower derived with PVP is high in Oads content and good in reducibility. ► NiO nanoflower derived with PVP performs excellently for toluene combustion. ► High surface area and Oads content and good reducibility governs catalytic activity.

Keywords
Porous NiO nanoflowers; Porous NiO nanourchins; Well-defined morphology; Hydrothermal strategy; Toluene catalytic oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 27, 5 October 2012, Pages 148–153
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