1. Catalytic Alkane Metathesis by Tandem Alkane Dehydrogenation– Olefin Metathesis

2. Fischer-Tropsch

3. Alkane Metathesis

4. Tandem Alkane Dehydrogenation– Olefin Metathesis

5. Molecular Redistribution Mechanism by Olefin Intermediates
24.7%
15.9%
Burnett, R. L., Hughes, T. R. J. Catal. 1973, 31, 55

6. Dehydrogenation catalysts

7. Schrock-type Metathesis Catalyst
Schrock, R. R. et. al. J. Am. Chem. Soc. 1990, 112, 3875

8. Representative Examples of the Metathesis of n-hexane

9. The Mechanism of Metathesis and Dehydrogenation
Goldman, A. S. et. al. J. Am. Chem. Soc. 1999, 121, 4087

10. The Reason of Decomposition

11. The Metathesis by Ir-based Catalysts and Re2O7/Al2O3

12. Conclusions
The decomposition of the olefin metathesis catalysts appears to limit conversions.
The author also expect that more active
dehydrogenation catalysts will give more turnovers before decomposition of the metathesis catalyst.