摘要:
The invention describes a novel type of nickel-based complex and its preparation method. The invention also concerns the use of said complex in a process for the transformation of olefins.
摘要:
The invention describes a novel catalytic composition comprising at least one nickel precursor A with at least one diphosphinamine ligand B1 of formula (R1)(R′1)P—N(R3)—P(R2)(R′2) or an iminobisphosphine ligand B2 of formula (R3)N═P(R1)(R′1)—P(R2)(R′2) or an iminobisphosphine ligand B′2 of formula (R3)N═P(R2)(R′2)—P(R1)(R′1). The invention also describes the use of said catalytic composition in a method for the oligomerisation of olefins.
摘要:
The invention describes a novel dissymmetric nickel-based complex and the method of preparation thereof from at least one diphosphinamine ligand B1 of formula (R1)(R′1)P—N(R3)—P(R2)(R′2), or an iminobisphosphine ligand B2 of formula (R3)N═P(R1)(R′1)—P(R2)(R′2). The invention also concerns the use of said complex in a method for oligomerisation of olefins.
摘要:
The invention describes a novel type of nickel-based complex and its preparation method. The invention also concerns the use of said complex in a process for the transformation of olefins.
摘要:
The invention describes a nickel-based composition. The invention also concerns the use of said composition as a catalytic composition in an olefin oligomerization process.
摘要:
This invention describes a process for metathesis of olefins from feedstocks obtained from the Fischer-Tropsch process, using as catalyst a ruthenium alkylidene complex comprising a saturated or unsaturated, dissymmetrical N-heterocyclic carbene (NHC) ligand.
摘要:
The present invention describes a method of separating butene-2 from a C4 cut containing butene-2 and butene-1 by selective oligomerization of butene-1 to predominantly linear oligomers. Optional additional steps make it possible to separate isobutene, 1,3-butadiene as well as traces of acetylene hydrocarbons optionally present in the C4 feedstock.
摘要:
The invention concerns a process for the neutralization of a catalytic system for the oligomerization of olefins, said catalytic system comprising at least one halogenated derivative, characterized in that the reaction effluent is brought into contact with at least one nitrile compound.
摘要:
The invention describes a catalytic composition obtained by interaction of an alkyl titanate on the one hand with a preformed mixture of an alkylaluminium and a Lewis base on the other hand. The invention also describes the use of said composition in a process for the selective dimerization of ethylene to 1-butene.
摘要:
This invention describes a process for metathesis of olefins from feedstocks obtained from the Fischer-Tropsch process, using as catalyst a ruthenium indenylidene complex comprising a saturated or unsaturated, symmetric N-heterocyclic carbene.