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Chemically Modified Activated Carbons as Catalysts of Oxidative Dehydrogenation of n-Butane

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Malaika A., Wower K., Kozłowski M.

Acta Physica Polonica A

2010

vol. 118

issue 3

459-464

Commercial availability and low price of light alkanes make them very attractive in many branches of industry. Potentially interesting is their use in the process of oxidative dehydrogenation leading to production of olefins. This study was undertaken to characterise the oxidative dehydrogenation of n-butane to 1,3-butadiene (important substrate in production of synthetic rubber and polyamides) taking place over the modified carbon catalysts obtained from peach stones precursor. The catalytic tests were performed in the temperature range 250-450°C at oxygen/n-butane ratio of 1:1. For the majority of the activated carbon samples studied at the lowest temperature the only product was CO_2. At 300°C the products of dehydrogenation of n-butane and side products appeared. With increasing temperature the amount of compounds generated increased and in the group of C4 hydrocarbons the dominant were 1-butene and 1,3-butadiene. The most effective catalyst was the sample oxidised with air, the least effective was the sample modified with ammonium peroxydisulphate.

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1 Acta Physica Polonica A

1 2010

1 Kozłowski M.

1 Malaika A.

1 Wower K.

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Chemically Modified Activated Carbons as Catalysts of Oxidative Dehydrogenation of n-Butane