| 摘要 |
This invention describes a process for treatment of feedstocks obtained from a renewable source implementing—in one hydroisomerization stage—a 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 fraction by weight of an initial extra-network aluminum atom that is greater than 10%, relative to the total mass of aluminum that is present in the zeolite, an initial mesopore volume that is measured by nitrogen porosimetry that is greater than 0.07 ml·g−1, and an initial crystalline parameter ao of the unit cell mesh of between 24.38Åand 24.30Å, whereby said zeolite is modified by a) a basic treatment stage that consists of the mixing of said dealuminified Y zeolite with a basic aqueous solution, and at least one heat treatment stage c).
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