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Effective Pd/C catalyst for chlorobenzene and hexachlorobenzene hydrodechlorination by direct pyrolysis of sawdust impregnated with palladium nitrate

Paper ID Volume ID Publish Year Pages File Format Full-Text
49319 46736 2016 5 PDF Available
Title
Effective Pd/C catalyst for chlorobenzene and hexachlorobenzene hydrodechlorination by direct pyrolysis of sawdust impregnated with palladium nitrate
Abstract

•Pd(NO3)2 impregnated sawdust was used as a catalyst precursor.•Two Pd/C catalysts were prepared by pyrolysis with different temperature ramps.•They contain amorphous carbon and Pd0 nanoparticles partially decorated with carbon.•Milder pyrolysis conditions lead to smaller and less carbon decorated Pd particles.•Such catalyst is better in gas- and especially liquid-phase hydrodechlorination.

Two Pd/C catalysts were prepared by pyrolysis of Pd(NO3)2 impregnated sawdust. At equal pyrolysis time slow ramping with shorter isothermal heating resulted in 0.9 wt.% Pd/C-S1 sample comprising carbon support with some oxygen-containing moieties and Pd0 with 2.6 nm average particle size (APS) partially decorated with carbon shell, whereas fast temperature ramping and long isothermal heating provided 0.6 wt.% Pd/C-S2 containing Pd0 with 3.7 nm APS, with larger fraction of carbon decorated particles. Pd/C-S1 is slightly more efficient than Pd/C-S2 in gas phase chlorobenzene hydrodechlorination to benzene at 100–250 °C. Only Pd/C-S1 provides hexachlorobenzene hydrodechlorination in liquid phase due to lower APS and probably smaller PdCx content.

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Keywords
Pd catalyst; Sawdust; Hydrodechlorination; Hexachlorobenzene; Chlorobenzene; Pyrolysis
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Effective Pd/C catalyst for chlorobenzene and hexachlorobenzene hydrodechlorination by direct pyrolysis of sawdust impregnated with palladium nitrate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 77, 5 March 2016, Pages 37–41
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