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DOI: 10.1126/science.1161916
¤ OpenAccess: Green
This work has “Green” OA status. This means it may cost money to access on the publisher landing page, but there is a free copy in an OA repository.
Surface-Modified Carbon Nanotubes Catalyze Oxidative Dehydrogenation of <i>n</i> -Butane
Jian Zhang,Xi Liu,Raoul Blume,Aihua Zhang,Robert Schlögl,Dang Sheng Su
Dehydrogenation
Butane
Catalysis
2008
Butenes and butadiene, which are useful intermediates for the synthesis of polymers and other compounds, are synthesized traditionally by oxidative dehydrogenation (ODH) of n-butane over complex metal oxides. Such catalysts require high O2/butane ratios to maintain the activity, which leads to unwanted product oxidation. We show that carbon nanotubes with modified surface functionality efficiently catalyze the oxidative dehydrogenation of n-butane to butenes, especially butadiene. For low O2/butane ratios, a high selectivity to alkenes was achieved for periods as long as 100 hours. This process is mildly catalyzed by ketonic CO groups and occurs via a combination of parallel and sequential oxidation steps. A small amount of phosphorus greatly improved the selectivity by suppressing the combustion of hydrocarbons.
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“Surface-Modified Carbon Nanotubes Catalyze Oxidative Dehydrogenation of <i>n</i> -Butane” is a paper by Jian Zhang Xi Liu Raoul Blume Aihua Zhang Robert Schlögl Dang Sheng Su published in 2008. It has an Open Access status of “green”. You can read and download a PDF Full Text of this paper here.