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Dechlorination of 1,2‐dichloroethane catalyzed by Pt–Cu/C: unraveling the role of each metal

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Abstract

The effect of Pt–Cu/C catalyst composition on the activity and selectivity in the reaction of 1,2‐dichloroethane dechlorination in a H2‐containing atmosphere has been investigated. For monometallic Pt catalysts and those with Cu/Pt atomic ratio ⩽1, the reaction products are almost entirely ethane and monochloroethane. However, increasing the Cu/Pt ratio increases the selectivity towards ethylene. Approximately 90% selectivity towards ethylene is obtained for catalysts with Cu/Pt ratio ⩾9. Monometallic Cu/C produce only ethylene, but the activity is two orders of magnitude lower than that of other catalysts studied. With time on stream during the initial 2–30 h there is a continuous increase in selectivity towards ethylene at the expense of ethane. This behavior was rationalized in terms of equilibration of bimetallic particle surface composition exposed to the reaction mixture.

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Authors and Affiliations

  1. Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA, 15261, USA E-mail:

    Lalith S. Vadlamannati, Vladimir I. Kovalchuk & Julie L. d'Itri

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  1. Lalith S. Vadlamannati
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  2. Vladimir I. Kovalchuk
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  3. Julie L. d'Itri
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Vadlamannati, L.S., Kovalchuk, V.I. & d'Itri, J.L. Dechlorination of 1,2‐dichloroethane catalyzed by Pt–Cu/C: unraveling the role of each metal. Catalysis Letters 58, 173–178 (1999). https://doi.org/10.1023/A:1019015009078

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