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2004•Journal of Chemical Industry and EngineeringRequires access

CATALYTIC DECHLORINATION OF m-DCB IN WATER BY Pd/Fe

Hongyi Zhou

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Abstract

Pd/Fe bimetallic catalysts were synthesized via chemical deposition and used to treat m-DCB.Batch experiments demonstrated that the Pd/Fe bimetallic particles could effectively dechlorinate m-DCB.The dechlorination efficiency reached 90% at a Pd/Fe loading ratio of 0.02% (mass) and metal to solution ratio 4g∶75ml in 90 min.Dechlorination was affected by several factors such as reaction temperature, pH, Pd/Fe ratio, and the induction of Pd/Fe catalysts.Chlorobenzene represents the partially stable dechlorinated intermediate in the generation of the final product (i.e., benzene), while part of m-DCB was dechlorinated to benzene directly.The dechlorination reaction was believed to take place mainly on the active surface sites of the Pd/Fe bimetallic particles via a pseudo-first order reaction, and the activation energy of this reaction was found to be 96.6 kJ·mol -1 .

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Pd/Fe bimetallic catalysts were synthesized via chemical deposition and used to treat m-DCB.Batch experiments demonstrated that the Pd/Fe bimetallic particles could effectively dechlorinate m-DCB.The dechlorination efficiency reached 90% at a Pd/Fe loading ratio of 0.02% (mass) and metal to solution ratio 4g∶75ml in 90 min.Dechlorination was affected by several factors such as reaction temperature, pH, Pd/Fe ratio, and the induction of Pd/Fe catalysts.Chlorobenzene represents the partially stable dechlorinated intermediate in the generation of the final product (i.e., benzene), while part of m-DCB was dechlorinated to benzene directly.The dechlorination reaction was believed to take place mainly on the active surface sites of the Pd/Fe bimetallic particles via a pseudo-first order reaction, and the activation energy of this reaction was found to be 96.6 kJ·mol -1 .

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Available abstract

Pd/Fe bimetallic catalysts were synthesized via chemical deposition and used to treat m-DCB.Batch experiments demonstrated that the Pd/Fe bimetallic particles could effectively dechlorinate m-DCB.The dechlorination efficiency reached 90% at a Pd/Fe loading ratio of 0.02% (mass) and metal to solution ratio 4g∶75ml in 90 min.Dechlorination was affected by several factors such as reaction temperature, pH, Pd/Fe ratio, and the induction of Pd/Fe catalysts.Chlorobenzene represents the partially stable dechlorinated intermediate in the generation of the final product (i.e., benzene), while part of m-DCB was dechlorinated to benzene directly.The dechlorination reaction was believed to take place mainly on the active surface sites of the Pd/Fe bimetallic particles via a pseudo-first order reaction, and the activation energy of this reaction was found to be 96.6 kJ·mol -1 .

Key concepts: Bimetallic strip, Chlorobenzene, Catalysis, Benzene, Chemistry, Activation energy, Metal, Inorganic chemistry

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