fulltext.study @t Gmail

Simultaneous oxidation of carbon black and volatile organic compounds over Ru/CeO2 catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
47972 46487 2009 8 PDF Available
Title
Simultaneous oxidation of carbon black and volatile organic compounds over Ru/CeO2 catalysts
Abstract

Ru/CeO2 catalysts with Ru loading of 1–5 wt.% were prepared by wet impregnation from aqueous ruthenium (III) nitrosyl nitrate solution and activation with an air flow at 600 °C for 4 h. This activation resulted in a considerable reactivity for the catalytic oxidation of carbon black (CB) (T50% ∼350 °C “tight contact” mixtures and T50% ∼515 °C “loose contact” mixtures) and volatile organic compounds (VOCs) (T50% = 175 °C for propene, T50% = 215 °C for toluene). When carbon black oxidation was conducted under “propene (6000 ppm) + air” or “toluene (2000 ppm) + air” flow, the elimination of an important part of CB was observed at relatively low temperatures comparing to its elimination under pure air flow. These temperatures correspond to the total oxidation of the VOC present in the reactant gases. Carbon black total elimination was also investigated under isotherm conditions in the presence and in the absence of propene. Total elimination occurred during shorter times when combustion was performed under propene. TPR study showed that ruthenium species present in the catalysts after activation reduces at relatively low temperatures (<100 °C) and that from a Ru loading of 1.5 wt.%, agglomerated ruthenium oxide was formed and that this latter is more difficult to reduce (>100 °C).

Keywords
Carbon black; Catalysts; Ruthenium; TPR; XRD; VOC
First Page Preview
Simultaneous oxidation of carbon black and volatile organic compounds over Ru/CeO2 catalysts
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 88, Issues 3–4, 20 May 2009, Pages 249–256
Authors
, , ,
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