摘要:
The invention concerns a process for the selective dimerization of ethylene to 1-butene employing a catalytic composition comprising at least one alkoxy or aryloxy titanium compound, at least one additive selected from ether type compounds and at least one aluminium compound.
摘要:
A composition is described which comprises at least one chromium compound, at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and barium, with general formula [M(RO)2-nXn]y, in which RO is an aryloxy radical of a derivative ROH containing 6 to 80 carbon atoms, X is a halogen or a hydrocarbyl radical containing 1 to 30 carbon atoms, n is a whole number which may take the values 0 or 1 and y is a whole number in the range 1 to 10, and at least one additive selected from ether type compounds, which may or may not be cyclic, introduced in a near-stoichiometric quantity with respect to the element M.
摘要:
The present invention describes a process for the production of octenes from ethylene by dimerizing ethylene to butenes and by dimerizing butenes to octenes.
摘要:
Catalytic composition comprising at least one non-aqueous ionic liquid medium of general formula Q1+A1−, in which Q1+ represents an organic cation and A1− represents an anion, and at least one ionic component of general formula Q2+A2−, in which Q2+ represents an organic cation comprising at least one sulphonic acid or carboxylic acid function, and A2− represents an anion. The invention also relates to an isobutene dimerization process using the catalytic composition.
摘要:
Catalytic composition comprising at least one Brønsted acid, designated HB, dissolved in a non-aqueous liquid medium of general formula Q1+A1−, in which Q1+ represents an organic cation and A1− represents an anion, said composition also comprising an additive Q2+A2− in which Q2+ represents an organic cation containing at least one alcohol function and A2− represents an anion. The invention also relates to an isobutene dimerization process using the catalytic composition.