US 9,314,781 B2 · Catalyst for selective paraffin isomerization and preparation method and use thereof

Abstract

The present invention discloses a catalyst for paraffin isomerization, as well as a preparation method and use thereof. The catalyst comprises a TON molecular sieve modified by 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 rare earth to the inorganic refractory oxides 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 the metal. When used in the process of isomerization dewaxing of various raw materials containing paraffins, the catalyst can not only decrease the solidifying points of raw oil containing paraffins, but also increase the yield of liquid products. Particularly, when used in the process of isomerization dewaxing of lubricating oil distillates, the catalyst is advantageous in producing base oil for lubricating oil with a high a higher yield, a lower pour point (solidifying point) and a higher viscosity index.

Claims7

Dependent claims

A method of preparing a catalyst for paraffin isomerization, comprising:

a) mixing one or more rare earth compounds with a TON molecular sieve to form a first mixture, drying and calcining the first mixture to obtain a TON molecular sieve modified by one or more rare earth oxides;
b) mixing one or more zirconium compounds with an inorganic refractory oxide to form a second mixture, drying and calcining the second mixture to obtain an inorganic oxide modified by zirconium oxide;
c) kneading the TON molecular sieves comprising one or more rare earth oxides and the inorganic refractory oxide modified by zirconium oxide to form a third mixture, drying and calcining the third mixture to obtain a catalyst carrier;
and
d) loading a compound of a noble metal of group VIII on the catalyst carrier to obtain a catalyst precursor, drying and calcining the catalyst precursor to obtain the catalyst for paraffin isomerization.

2 more elements

Dependencies are inferred from the claim text.

Catalyst for selective paraffin isomerization and preparation method and use thereof

Life of this patent

Catalyst for selective paraffin isomerization and preparation method and use thereof

Life of this patent

Abstract

Claims7