TY - JOUR
T1 - Catalytic homologation of olefins to higher and lower olefins
T2 - a metathesis related reaction
AU - Leconte, M.
AU - Theolier, A.
AU - Basset, Jean-Marie Maurice
PY - 1985/1/1
Y1 - 1985/1/1
N2 - With Fe/SiO2, Ru/SiO2 and Os/SiO2, any acyclic olefin (e.g. ethylene, propylene or isobutene) homologates at 200 - 300°C to yield higher and lower olefins with the simultaneous formation of methane. The reaction is catalytic when H2 is present. The main features of such reactions are reported, i.e. conversions, turnover numbers, product distribution, effect of contact time on the selectivity for α-olefins and branched olefins. The results are compared with those obtained in Fischer-Tropsch syntheses. It is shown that the mode of C-C bond formation for the hydrocondensation of CO or olefin homologation is the same. Two possible mechanisms are discussed to account for the data. These mechanisms assume either the insertion of a carbene into a metal-alkyl bond or the attack of a carbene on a coordinated olefin.
AB - With Fe/SiO2, Ru/SiO2 and Os/SiO2, any acyclic olefin (e.g. ethylene, propylene or isobutene) homologates at 200 - 300°C to yield higher and lower olefins with the simultaneous formation of methane. The reaction is catalytic when H2 is present. The main features of such reactions are reported, i.e. conversions, turnover numbers, product distribution, effect of contact time on the selectivity for α-olefins and branched olefins. The results are compared with those obtained in Fischer-Tropsch syntheses. It is shown that the mode of C-C bond formation for the hydrocondensation of CO or olefin homologation is the same. Two possible mechanisms are discussed to account for the data. These mechanisms assume either the insertion of a carbene into a metal-alkyl bond or the attack of a carbene on a coordinated olefin.
UR - http://www.scopus.com/inward/record.url?scp=0020495554&partnerID=8YFLogxK
U2 - 10.1016/0304-5102(85)87030-9
DO - 10.1016/0304-5102(85)87030-9
M3 - Article
AN - SCOPUS:0020495554
VL - 28
SP - 217
EP - 231
JO - Journal of Molecular Catalysis
JF - Journal of Molecular Catalysis
SN - 0304-5102
IS - 1-3
ER -