摘要:
A process for isomerizing a feed comprising at least one aromatic compound containing eight carbon atoms per molecule is carried out in the presence of a catalyst comprising at least one modified zeolite with structure type EUO, at least one binder and at least one metal from group VIII of the periodic table, said catalyst having been prepared using a process which comprises the following in succession: a) a step for treatment of a zeolite with structure type EUO in the presence of at least one molecular compound containing at least one silicon atom, during which said compound, with a diameter greater than the maximum pore opening diameter in said zeolite, is deposited in the gas phase on the outer surface of said zeolite; b) at least one heat treatment step; c) forming said zeolite with a binder; d) at least one step for introducing at least one metal from group VIII of the periodic table onto a support based on said modified and formed zeolite.
摘要:
A process for isomerizing a feed comprising at least one aromatic compound containing eight carbon atoms per molecule is carried out in the presence of a catalyst comprising at least one modified zeolite with structure type EUO, at least one binder and at least one metal from group VIII of the periodic table, said catalyst having been prepared using a process which comprises the following in succession: a) a step for treatment of a zeolite with structure type EUO in the presence of at least one molecular compound containing at least one silicon atom, during which said compound, with a diameter greater than the maximum pore opening diameter in said zeolite, is deposited in the gas phase on the outer surface of said zeolite; b) at least one heat treatment step; c) forming said zeolite with a binder; d) at least one step for introducing at least one metal from group VIII of the periodic table onto a support based on said modified and formed zeolite.
摘要:
Process for hydrocracking and/or hydrotreatment of hydrocarbon feeds utilizing a catalyst comprising at least one hydro-dehydrogenating element of group VIB and of non-precious group VIII used alone or mixed, and a support comprising at least one porous mineral matrix and at least one dealuminated USY zeolite having an overall silicon-to-aluminium atomic ratio comprised between 2.5 and 10, a fraction by weight of extra-network aluminium atom greater than 10% relative to the total mass of the aluminium present in the zeolite, a mesopore volume measured by nitrogen porosimetry greater than 0.07 ml.g−1, and a crystal parameter a0 of the elemental mesh greater than 24.28 Å, in which a quantity of the element nickel comprised between 0.5 and 3% by weight relative to the total mass of the zeolite is deposited on said USY zeolite and in which said catalyst is in the sulphide form.
摘要:
The present invention relates to a catalyst comprising at least one IZM-2 zeolite, at least one amorphous matrix, at least one hydro-dehydrogenating element selected from the group formed by the elements from group VIB and from group VIII of the periodic table and excluding platinum and palladium. The catalyst also optionally contains a controlled quantity of at least one doping element selected from phosphorus, boron and silicon, optionally at least one element from group VB of the periodic table of the elements, and optionally a group VIIA element. The invention also relates to hydrocracking and hydrotreatment processes implementing this catalyst.
摘要:
This invention describes a process for the production of middle distillates from a paraffinic feedstock that is produced by Fischer-Tropsch synthesis, implementing a hydrocracking/hydroisomerization catalyst that comprises at least one hydro-dehydrogenating metal that is selected from the group that is formed by the metals of group VIB and group VIII of the periodic table and a substrate that comprises at least one dealuminified Y zeolite that has an initial overall atomic ratio of silicon to aluminum of between 2.5 and 20, a starting extra-lattice aluminum atom fraction by weight that is greater than 10%, relative to the total mass of aluminum that is present in the zeolite, a starting mesopore volume that is measured by nitrogen porosimetry that is greater than 0.07 ml.g−1, and a starting crystalline parameter ao of the elementary mesh of between 24.38 Å and 24.30 Å, whereby said zeolite is modified by a) a basic treatment stage consisting in mixing said dealuminified Y zeolite with a basic aqueous solution, and at least one heat treatment stage c).
摘要:
Described herein is a hydrocracking and/or hydrotreatment process which uses a catalyst comprising an active phase containing at least one hydrogenating/dehydrogenating component, and a support comprising at least one dealuminated zeolite Y having an overall initial atomic ratio of silicon to aluminum between 2.5 and 20, an initial weight fraction of extra-lattice aluminum atoms greater than 10%, an initial mesopore volume greater than 0.07 ml.g−1, and an initial crystal lattice parameter a0 between 24.38 Å and 24.30 Å. The zeolite Y is modified by a basic treatment stage, and at least one thermal treatment stage.
摘要:
The invention describes a porous composite material that comprises a porous substrate based on a refractory inorganic oxide in which said substrate has a zeolite crystal content that is less than 25% by mass, whereby said crystals are dispersed homogeneously in the pores of said substrate, and the distribution coefficient that is measured by Castaing microprobe is between 0.75 and 1.25, and in which the total pore volume of said substrate represents at least 40% of the initial total pore volume of the substrate, and the mean diameter of the pores represents at least 50% of the mean diameter of the pores of the initial substrate, its process for preparation and its use as catalyst in the hydrocarbon feedstock conversion reactions.
摘要:
Process for hydrocracking and/or hydrotreatment of hydrocarbon feeds utilizing a catalyst comprising at least one hydro-dehydrogenating element of group VIB and of non-precious group VIII used alone or mixed, and a support comprising at least one porous mineral matrix and at least one dealuminated USY zeolite having an overall silicon-to-aluminium atomic ratio comprised between 2.5 and 10, a fraction by weight of extra-network aluminium atom greater than 10% relative to the total mass of the aluminium present in the zeolite, a mesopore volume measured by nitrogen porosimetry greater than 0.07 ml.g−1, and a crystal parameter a0 of the elemental mesh greater than 24.28 Å, in which a quantity of the element nickel comprised between 0.5 and 3% by weight relative to the total mass of the zeolite is deposited on said USY zeolite and in which said catalyst is in the sulphide form.
摘要:
The present invention relates to a catalyst comprising at least one IZM-2 zeolite, at least one amorphous matrix, at least one hydro-dehydrogenating element selected from the group formed by the elements from group VIB and from group VIII of the periodic table and excluding platinum and palladium. The catalyst also optionally contains a controlled quantity of at least one doping element selected from phosphorus, boron and silicon, optionally at least one element from group VB of the periodic table of the elements, and optionally a group VIIA element. The invention also relates to hydrocracking and hydrotreatment processes implementing this catalyst.
摘要:
A process is described for the production of middle distillates from a paraffinic feedstock wherein the feedstock is subjected to hydrocracking and/or hydro-isomerization in the presence of a hydrocracking/hydro-isomerization catalyst. The catalyst comprises at least one hydro-dehydrogenating metal selected from metals of groups VIB and VIII, and a substrate that comprises at least one dealuminified Y zeolite. The dealuminified Y zeolite is modified by a basic treatment stage wherein the dealuminified Y zeolite is mixed with a basic aqueous solution, and at least one heat treatment stage.