摘要:
A supported catalyst with rhenium and also containing aluminium introduced by a compound of the formula (OR).sub.qAlR'.sub.r with R being a hydrocarbyl residue with from 1 to 40 carbon atoms, R' being an alkyl residue with from 1 to 20 carbon atoms, and with q and r equal to 1 or 2 with q+r=3. A process for the preparation of a catalyst comprising impregnating a compound of rhenium on a porous support formed by refractory oxides and/or alumino-silicates of an acid, neutral or basic nature, roasting at a temperature of form 200 to 950.degree. C. and impregnating with said aluminium compound. The catalyst is used for the metathesis of olefins.
摘要翻译:具有铼并且还含有由式(OR)qAlR'r化合物引入的负载催化剂,R是具有1至40个碳原子的烃基残基,R'是具有1至20个碳原子的烷基, q和r等于1或2,q + r = 3。 一种制备催化剂的方法,包括将铼化合物浸渍在由难溶氧化物和/或酸性,中性或碱性的耐热氧化铝和/或铝硅酸盐形成的多孔载体上,在200至950℃的温度下焙烧, 用所述铝化合物浸渍。 催化剂用于烯烃的复分解。
摘要:
Catalytic process for metathesis of olefins in the presence of a catalyst and a stabilizing agent that is injected into the reaction medium. Application in particular to rebalancing between one another the light olefins that are obtained from steam cracking or catalytic cracking (FCC), such as ethylene, propylene, butenes or pentenes.
摘要:
Catalytic process for metathesis of olefins in the presence of a catalyst and a stabilizing agent that is injected into the reaction medium. Application in particular to rebalancing between one another the light olefins that are obtained from steam cracking or catalytic cracking (FCC), such as ethylene, propylene, butenes or pentenes.
摘要:
A process for the dimerization of alpha-alkenes having 2 to 12 carbon atoms in the presence of an alkanediol solvent and of a novel catalytic system formed by combining:(a) a palladium(II) compound,(b) a chelate ligand comprising a compound containing at least two N coordinating atoms which are connected through a chain comprising two C atoms, >2.0 mol chelate ligand per gram-atom Pd being used, p1 (c) a protonic acid, except hydrohalogenic acids, and(d) a salt of Cu, Fe, Zn, Sn, Mn, V, Al or a group VIB metal, except a halide.
摘要:
A process for the dimerization of alpha-alkenes having 2 to 12 carbon atoms in the presence of an alkanediol solvent and of a novel catalytic system formed by combining:(a) a palladium(II) compound,(b) a chelate ligand comprising a compound containing at least two N coordinating atoms which are connected through a chain comprising two C atoms, >2.0 mol chelate ligand per gram-atom Pd being used,(c) a protonic acid, except hydrohalogenic acids, and(d) a salt of Cu, Fe, Zn, Sn, Mn, V, Al or a Group VIB metal, except a halide.
摘要:
A PROCESS FOR DISPROPORTIONATING DEFINES USING AN ORGANO-METAL COMPOUND AND A COMPOUND OF TUNGSTEN, MOLYBDENUM OR RHENIUM, IN WHICH THE TUNGSTEN, MOLYBDENUM, OR RHENIUM IS IN A HIGHER OR ITS HIGHEST VALENCE STATE, IN SUCH PROPORTIONS THAT THE ATOMIC RATIO OF THE METAL OF THE ORGANO-METAL COMPOUND TO TUNGSTEN, MOLYBDENUM OR RHENIUM EXCEEDS 2:1.