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Y. Zhou, G. S. Hutchings, Y. C. Kimmel, J. G. Chen, F. Jiao et al., (4) Today, the high dry shale gas production in the US has the effect of increasing the use of low price ethane feed in steam crackers at the expense of naphtha feeds The olefin content depends of the Fischer-Tropsch catalyst (Iron or Cobalt), see: Khodakov, A Despite the fact that 1-hexene and 1-octene are highly desirable co-monomers for Linear Low Density Poly-Ethylene (LLDPE) production, challenging separation techniques are required to meet the market needs for co-monomer grade quality. (7) Handbook of Metathesis) The concept of performing olefin metathesis with a mixture of linear olefins has been successfully applied for more than 50 years in the SHOP process. Nevertheless, the Schulz-Flory distribution of linear alpha olefins (C 4-C30+) requires the prior separation of high-boiling range olefins, followed by isomerization into internal olefins and subsequent cross-metathesis with low-boiling range olefins. (a) For a book dealing with ?-olefin applications, Chem. Rev. Chem. Rev. Angew. Chem. Int. Ed, vol.53, issue.5210, pp.3242-3247, 1989.

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L. Cavallo, H. Olivier-bourbigou, M. Mauduit, S. Dalton-trans-manzini, A. Poater et al., 30) The NHC-protonolysis was recently observed during the decomposition process of Ru-indenylidene complexes, see ref. 26. The protonolysis of bis-NHC-based catalysts has been also investigated for olefin metathesis transformations, see : (a, Angew. Chem. Int. Ed. E.; Chem. Cat. Chem. J. Am. Chem. Soc. J, vol.43, issue.133, pp.7044-7049, 2011.