US 9,518,233 B2 · Catalyst for a hydrodgenation dewaxing process and method for manufacturing same

Abstract

The present invention relates to a bifunctional catalyst for a hydrodewaxing process with improved isomerization selectivity, and to a method for manufacturing the same, and more particularly to a bifunctional catalyst and to a method for manufacturing same, which is characterized in that EU-2 zeolite with a controlled degree of phase transformation is used as a catalyst support having an acid site. The EU-2 zeolite, the degree of phase transformation of which is controlled, includes, by controlling synthesis parameters of EU-2, predetermined amounts of materials that are phase-transformed from EU-2 crystals such as cristobalite and quartz. The metal loaded bifunctional catalyst according to the present invention improves selectivity of the isomerization process, rather than a cracking reaction, during a hydroisomerization reaction of n-hexadecane. Therefore, the bifunctional catalyst can be widely used as a catalyst for a dewaxing process such as lubricant base oil and diesel oil.

Claims9

Dependent claims

A hydrodewaxing method of a hydrocarbon raw material, wherein the hydrocarbon raw material is hydrodewaxed in the presence of a catalyst under the reaction conditions of a temperature of 250˜420° C., a hydrogen partial pressure of 1˜200 atm, a liquid hourly space velocity of 0.1˜10 h−1 and a hydrogen treatment rate of 250˜10,000 scf/B, wherein the catalyst comprises

an EU-2 zeolite support having an acid site, the phase transition index (T) thereof, represented by Formula 1 below, being 60≦T<98, and the molar ratio of silica and alumina thereof being 20 to 200;
and
a metal composition for hydrogenation loaded in the EU-2 zeolite support, the metal composition including at least one metal selected from the group consisting of group VI metals and group VIII metals,
wherein <Formula 1> T=(TGA weight reduction rate of the synthesized EU-2 sample)/(TGA weight reduction rate of pure EU-2 reference sample)×100 (here, the TGA weight reduction rate of the EU-2 sample is measured under the condition that the sample is heated from 120° C. to 550° C. at a heating rate of 2° C./min and then maintained at 550° C. for 2 hours).

1 more element

(a) preparing an EU-2 zeolite support, the degree of phase transition of which is controlled such that a phase transition index (T) thereof is 60≦T<98;
(b) loading a active metal composition on the EU-2 zeolite support for hydrogenation, the metal composition including at least one metal selected from the group consisting of group VI metals and group VIII metals;
and
(c) drying and calcinating the EU-2 zeolite support loaded with the metal composition, wherein T=(TGA weight reduction rate of the synthesized EU-2 sample)/(TGA weight reduction rate of pure EU-2 reference sample)×100 (here, the TGA weight reduction rate of the EU-2 sample is measured under the condition that the sample is heated from 120° C. to 550° C. at a heating rate of 2° C./min and then maintained at 550° C. for 2 hours).

1 more element

Dependencies are inferred from the claim text.

Catalyst for a hydrodgenation dewaxing process and method for manufacturing same

Life of this patent

Catalyst for a hydrodgenation dewaxing process and method for manufacturing same

Life of this patent

Abstract

Claims9