CATALYST FOR SELECTIVE PARAFFIN ISOMERIZATION AND PREPARATION METHOD AND USE THEREOF

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Disclosed are a catalyst for paraffin isomerization, as well as a preparation method and use thereof. The catalyst comprises a TON molecular sieve modified by a rare earth, an inorganic refractory oxide modified by zirconium oxide and a noble metal of group VIII. The weight ratio of the TON molecular sieve modified by a rare earth to the inorganic refractory oxide modified by zirconium oxide is 10 : 90 to 90 : 10, and the content of the metal of group VIII is 0.1 to 10 wt% based on metals. The catalyst can be used in the process of isomerization de-waxing of various raw materials containing paraffin, not only decreasing the solidifying point of raw oil containing paraffin, but also increasing the yield of liquid products. Particularly, using the catalyst in the process of isomerization de-waxing of lubricating oil distillates has the advantages of a higher product yield of base oil for lubricating oil, a lower pour point (solidifying point) and a higher viscosity index.