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Carbon-Carbon Bond Cleavage and Dehydrogenation of Isobutane Over HZSM-5 at Low Pressures and Temperatures |
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10.1007/s10562-012-0921-2 |
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Carbon-carbon bond cleavage and dehydrogenation are observed following low-pressure activation of isobutane over HZSM-5. Temperature-dependent rate parameters were determined by flexible least squares modelling of the propene and isobutene formation data. Apparent activation energies are 73.9 ± 2.4 kJ mol⁻¹ (C-C bond cleavage) and 62.8 ± 1.0 kJ mol⁻¹ (dehydrogenation). Such low energy barriers under molecular flow conditions suggest activation steps that are obscured by higher-pressure catalysis. |
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Catalysis Letters, 142(12), p. 1470-1473 |
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