Catalyst for a hydrogenation dewaxing process and method for manufacturing same

• US 8,772,193 B2
• Filed: 03/25/2011
• Issued: 07/08/2014
• Est. Priority Date: 04/14/2010
• Status: Active Grant

• Current Assignee: SK Innovation Company Limited
• Original Assignee: SK Innovation Company Limited
• Inventors: Kim, Tae Jin, Lee, Seung Woo, Lee, Yoon Kyung, Oh, Seung Hoon, Choi, Jae Suk
• Primary Examiner(s): WOOD, ELIZABETH D
• Application Number:
  US13/640,788
• Publication Number:
  US 20130030231A1
• Time in Patent Office: 1,201 Days
• Field of Search: 502/60, 502/74, 502/85
• US Class Current: 502/60
• CPC Class Codes: B01J 2229/20 to introduce other elements in the catalyst composition comprising the molecular sieve, but not specially in or on the molecular sieve itself
• CPC Class Codes: B01J 2229/42 Addition of matrix or binder particles
• CPC Class Codes: B01J 29/72 containing iron group metals, noble metals or copper
• CPC Class Codes: B01J 29/74 Noble metals
• CPC Class Codes: B01J 35/30 characterised by their physical properties
• CPC Class Codes: B01J 35/393 Metal or metal oxide crystallite size
• CPC Class Codes: B01J 35/615 100-500 m2/g
• CPC Class Codes: C01B 39/48 using at least one organic template directing agent
• CPC Class Codes: C07C 2523/42 Platinum
• CPC Class Codes: C07C 2523/44 Palladium
• CPC Class Codes: C07C 2523/58 with alkali- or alkaline earth metals or beryllium
• CPC Class Codes: C07C 2529/74 Noble metals
• CPC Class Codes: C07C 5/2775 with crystalline alumino-silicates, e.g. molecular sieves
• CPC Class Codes: C07C 9/22 with more than fifteen carbon atoms
• CPC Class Codes: C10G 2300/4018 Spatial velocity, e.g. LHSV, WHSV
• CPC Class Codes: C10G 2400/02 Gasoline
• CPC Class Codes: C10G 2400/04 Diesel oil
• CPC Class Codes: C10G 2400/10 Lubricating oil
• CPC Class Codes: C10G 45/62 containing platinum group metals or compounds thereof
• CPC Class Codes: C10G 45/64 containing crystalline alumino-silicates, e.g. molecular sieves
• CPC Class Codes: C10G 47/16 : Crystalline alumino-silicate carriers
• CPC Class Codes: Y02P 20/52 : using catalysts, e.g. selective catalysts

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.

Claims

1. A method of manufacturing a catalyst for a hydrodewaxing process, comprising the steps of:

(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).

2. The method of manufacturing a catalyst for a hydrodewaxing process according to claim 1, wherein the step (a) comprises the steps of:

(i) mixing a template material with an aqueous alkali solution including a silica raw material and an alumina raw material;

(ii) reacting the mixture at a temperature of 50-250°

C. to obtain an EU-2 zeolite, the degree of phase transition of which is controlled such that the phase transition index (T) thereof is 60≦

T<

98; and

(iii) washing and drying the EU-2 zeolite.

3. The method of manufacturing a catalyst for a hydrodewaxing process according to claim 2, wherein the template material is at least one member selected from the group consisting of alkyl amines, tetramethyl ammonium compounds and di-quaternary ammonium compounds.

4. The method of manufacturing a catalyst for a hydrodewaxing process according to claim 1, wherein the step (b) further comprises the step of adding at least one co-catalyst selected from the group consisting of group I metals and group II metals.

5. The method of manufacturing a catalyst for a hydrodewaxing process according to claim 4, wherein each of the group I metals and group II metals is selected from sodium, magnesium and calcium.

6. The method of manufacturing a catalyst for a hydrodewaxing process according to claim 4, wherein the step (b) further comprises the step of adding at least one co-catalyst selected from the group consisting of group I metals and group II metals.

7. The method of manufacturing a catalyst for a hydrodewaxing process according to claim 5, wherein each of the group I metals and group II metals is selected from sodium, magnesium and calcium.