Zeolite with improved hydro-isomerization activity

Patent metadata

Field	Value
Publication number	US-12338212-B2
Application number	US-202318366571-A
Country	US
Kind code	B2
Filing date	Aug 7, 2023
Priority date	Aug 18, 2022
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

According to an aspect of the present invention, provided is a zeolite catalyst having an MRE structure for hydro-isomerization. The zeolite catalyst has an adsorption volume ratio of lutidine to collidine measured by Fourier-transform infrared spectroscopy (FTIR) using lutidine and collidine as adsorbents of greater than 3 and less than or equal to 10. According to an aspect of the present invention, provided is a method of hydro-isomerization for a hydrocarbon feedstock, including subjecting the hydrocarbon feedstock to a hydro-isomerization reaction under conditions of a temperature of 200° C. to 500° C., a hydrogen pressure of 1 to 200 atmospheres, a liquid space velocity (LHSV) of 1.0 to 10.0 hr −1 , and the hydrogen/feedstock ratio of 45 to 1780 Nm 3 /m 3 in the presence of the zeolite catalyst.

First claim

What is claimed is:

1. A zeolite catalyst having an MRE structure for a hydro-isomerization reaction,
wherein the zeolite catalyst having an MRE structure is selected from the group consisting of EU-2, ZSM-48, and ZBM-30,
wherein the zeolite catalyst has an adsorption volume ratio of lutidine to collidine greater than 3 and less than or equal to 10, as measured by Fourier-transform infrared spectroscopy (FTIR) using lutidine and collidine as adsorbents,
wherein the zeolite catalyst has a silica-alumina ratio (SAR) of 100 to 200, and
wherein the zeolite catalyst has a BET surface area greater than or equal to 250 m 2 /g and not greater than 300 m 2 /g.

2. The zeolite catalyst of claim 1 , wherein an adsorption volume ratio of lutidine to collidine is greater than or equal to 8 measured by FTIR using lutidine and collidine as adsorbents.

3. The zeolite catalyst of claim 1 , wherein the zeolite catalyst has silica-alumina ratio (SAR) of 120 to 200.

4. The zeolite catalyst of claim 1 , wherein the zeolite catalyst has silica-alumina ratio (SAR) of 150 to 170.

5. The zeolite catalyst of claim 1 , wherein the zeolite catalyst has a total volume of pores having a diameter in a range of greater than 50 nm of less than 0.1 cc/g.

6. The zeolite catalyst of claim 5 , wherein the zeolite catalyst has a total volume of pores having a diameter in a range of 2 to 50 nm of less than 0.2 cc/g.

7. The zeolite catalyst of claim 1 , wherein the zeolite catalyst has a morphology selected from the group consisting of a granular shape, a needle shape, and a rod shape.

8. The zeolite catalyst of claim 7 , wherein the zeolite catalyst has a granular shape.

9. A method of hydro-isomerization for a hydrocarbon feedstock, the method comprising:
subjecting the hydrocarbon feedstock to a hydro-isomerization reaction under conditions of a temperature of 200° C. to 500° C., a hydrogen pressure of 1 to 200 atmospheres, a liquid space velocity (LHSV) of 1.0 to 10.0 hr −1 , and a hydrogen/feedstock ratio of 45 to 1780 Nm 3 /m 3 in the presence of the zeolite catalyst of claim 1 .

10. The method of claim 9 , wherein at least some of the hydrocarbons in the feedstock have a number of carbon atoms of at least 22.

Assignees

• Sk Innovation Co Ltd
• Sk Enmove Co Ltd

Inventors

• Kim Yeon Ho
• Lee Seung Woo
• Lee Yoon Kyung
• Jeon Hee Jung

Classifications

• B01J35/54

  Bars or plates · CPC title

• C07C2529/65

  of the ferrierite type, e.g. types ZSM-21, ZSM-35 or ZSM-38 · CPC title

• B01J29/703 Primary

  MRE-type, e.g. ZSM-48 · CPC title

• B01J35/50

  characterised by their shape or configuration · CPC title

• B01J35/633

  less than 0.5 ml/g · CPC title