摘要:
The invention concerns a process for the isomerization of aromatic compounds containing 8 carbon atoms per molecule in the presence of a catalyst comprising at least one zeolite with structure type EUO, wherein said process is operated in the presence of water in the feed at the end of a catalyst activation period.
摘要:
A process for isomerization of an aromatic fraction that contains at least one aromatic compound that has eight carbon atoms per molecule is described, with said process comprising bringing said fraction into contact with a catalyst that comprises at least one hydrogenating-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 composite that is formed by a zeolite that is selected from among the EUO-, MTW- and MOR-structural type zeolites and silicon carbide SiC.
摘要:
The invention relates to a process for producing middle distillates from a paraffinic feedstock produced by Fischer-Tropsch synthesis, implementing a hydrocracking/hydroisomerization catalyst comprising at least one hydro-dehydrogenating metal selected from the group formed by the metals from group VIB and from group VIII of the periodic table and a substrate comprising at least one crystallized IZM-2 solid having a chemical composition, expressed on an anhydrous base, in terms of oxide moles, by the following general formula: XO2:aY2O3:bM2/nO, wherein X represents at least one tetravalent element, Y represents at least one trivalent element and M is at least one alkali metal and/or an alkaline earth metal of valency n, a and b representing respectively the number of moles of Y2O3 and M2/nO and a is between 0 and 0.5 and b is between 0 and 1.
摘要:
The invention describes a catalyst comprising at least one hydrodehydrogenating metal selected from the group formed by metals from group VIB and metals from group VIII and a support comprising at least one silica-alumina, and at least one COK-7 zeolite alone, or mixed with at least one ZBM-30 zeolite, as well as a process for hydrocracking hydrocarbon feeds employing said 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:
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:
The invention relates to a method of treating feedstocks from renewable sources without intermediate gas-liquid separation in order to produce diesel fuel bases of excellent quality. The feedstocks used can be raw vegetable oils or such oils that have been previously subjected to a prerefining stage, animal fats, or mixtures of such feedstocks. The invention relates to a method allowing high diesel fuel base yields to be obtained from such feedstocks.
摘要:
The invention relates to a method of treating feedstocks from renewable sources without intermediate gas-liquid separation in order to produce diesel fuel bases of excellent quality. The feedstocks used can be raw vegetable oils or such oils that have been previously subjected to a prerefining stage, animal fats, or mixtures of such feedstocks. The invention relates to a method allowing high diesel fuel base yields to be obtained from such feedstocks.
摘要:
The invention relates to a method of treating feedstocks from renewable sources in order to produce diesel fuel bases of excellent quality. The feedstocks used can be, for example, raw vegetable oils or such oils that have been previously subjected to a prerefining stage, animal fats, or mixtures of such feedstocks. The invention relates to a method allowing high diesel fuel base yields to be obtained from such feedstocks.
摘要:
The invention concerns a process for the isomerization of aromatic compounds containing 8 carbon atoms per molecule in the presence of a catalyst comprising at least one zeolite with structure type EUO, wherein said process is operated in the presence of water in the feed at the end of a catalyst activation period.