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Citation: Chen Ming-Shu, Weng Wei-Zheng, Wan Hui-Lin. Mechanism of Propane and iso-butane Oxidehydrogenation on VM Catalyst[J]. Acta Physico-Chimica Sinica, ;1999, 15(10): 938-942. doi: 10.3866/PKU.WHXB19991014 shu

Mechanism of Propane and iso-butane Oxidehydrogenation on VM Catalyst

1.
Department of Chemistry,Institute of Physical Chemistry，and State Key Laboratory for Physical Chemistry of Solid Surface,Xiamen University,Xiamen 361005

Received Date: 3 December 1998
Available Online: 15 October 1999

The reactivation and transformation of propane and iso-butane in the presence of oxygen on VM catalyst have been studied by temperature programmed reaction-FTIR. The results showed that breaking of the second C-H bond of C 3H 8 and the tertiary C-H bond of i-C4H10 may have been involved in the activation step, i.e. rate-limited step for propane and iso butane oxidative dehydrogenation. In propane oxidehydrogenation COx may either directly come from deep oxidation of propane, or come from consecutive oxidation of propene. While most of the cracking products ethene and methane are directly come from propane.The breaking of C-C bond in i-C4H10 is easier than that in C3H8.
- Propane,
- Iso-butane,
- Oxidehydrogenation,
- Reactivity,
- TPR-FTIR
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