Metal trapping, method for manufacturing metal trapping, and fluid catalytic cracking catalyst

Patent metadata

Field	Value
Publication number	US-12251682-B2
Application number	US-201917311790-A
Country	US
Kind code	B2
Filing date	Nov 8, 2019
Priority date	Dec 21, 2018
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

A production method comprises the steps of obtaining a mixed slurry by adding an alumina component and at least one selected from an alumina component and a clay mineral to a binder containing a silicon oxide; obtaining a metal trapping precursor by mixing the mixed slurry with a compound of a first metal component and heating the mixed slurry of metal component; and obtaining a metal trapping by drying and calcining the metal trapping precursor. A metal trapping comprises: a binder mainly containing silicon oxide, one or two selected from an alumina component and a clay mineral, and an oxide of a first metal component; having no peak of silicate of the first metal component detected in X-ray diffraction analysis, having an attrition resistance index CAI within a predetermined range. A fluid catalytic cracking catalyst comprises the metal trapping, a zeolite component, a binder component, and a clay mineral component.

First claim

The invention claimed is:

1. A metal trapping comprising:
a binder component containing 50 mass % or more silicon oxide,
one or two selected from an alumina component and a clay mineral, and
a compound comprising Group II elements as a first metal component, wherein
the binder component is at least one of an aqueous solution and fine particles (sol) having an average particle size in the range of 4 to 100 nm,
the content of the first metal component in terms of oxide is 20 to 80 mass %,
the metal trapping has no peak of silicate of the first metal component detected in X-ray diffraction analysis, and has an attrition resistance index CAI of 0.1 to 18.

2. The metal trapping according to claim 1 , wherein the content of the binder in terms of oxide is in the range of 10 to 30 mass % with respect to the metal trapping.

3. The metal trapping according to claim 1 , wherein the content of the alumina component and the clay mineral in terms of oxide is in the range of 5 to 40 mass % in total with respect to the metal trapping.

4. The metal trapping according to claim 1 , wherein the metal trapping has an average particle size in the range of 40 to 100 μm, a specific surface area in the range of 3 to 200 m 2 /g, and a pore volume of 0.05 to 0.50 ml/g.

5. The metal trapping according to claim 1 , wherein the first metal component comprises magnesium and calcium.

6. The metal trapping according to claim 1 , the metal trapping further comprising alkali metal elements at a content of 2.0 mass % or less in terms of oxide M 2 O.

7. The metal trapping according to claim 1 , the metal trapping further comprising an oxide of rare-earth element as a second metal component.

8. The metal trapping according to claim 7 , wherein the second metal component is one or two selected from lanthanum and cerium.

9. The metal trapping according to claim 7 , wherein the content of the second metal component is 20 mass % or less in terms of oxide with respect to the metal trapping.

10. The metal trapping according to claim 7 , wherein the content ratio of the second metal component to the first metal component in terms of oxide is 0.01 to 0.20.

11. A method of producing the metal trapping according to claim 1 , comprising:
a first step of obtaining a mixed slurry of silicon oxide (silica-based) by adding at least one selected from a group consisting of an alumina component, an alumina component precursor and a clay mineral to a binder containing a silicon oxide (silica-based);
a second step of obtaining a metal trapping precursor by mixing the mixed slurry of silicon oxide (silica-based) with a compound of the first metal component, and further, optionally with a compound of a second metal component, and heating the mixed slurry of metal component; and
a third step of obtaining a metal trapping by drying and calcining the metal trapping precursor.

12. The method of producing the metal trapping according to claim 11 , wherein a washing step is added between drying and calcining in the third step.

13. A fluid catalytic cracking catalyst comprising the metal trapping according to claim 1 , a zeolite component, a binder component, and a clay mineral component.

14. The fluid catalytic cracking catalyst according to claim 13 , which further comprises an additive having an active matrix component.

Assignees

• Jgc Catalysts & Chemicals Ltd

Inventors

• Eto Mayumi
• Mizuno Takaki
• Mitsui Tomohiro
• Yamazaki Hiroshi
• Hasegawa Hiroki

Classifications

• B01J35/45

  Nanoparticles · CPC title

• B01J35/643

  less than 2 nm · CPC title

• B01J35/615

  100-500 m2/g · CPC title

• B01J35/612

  less than 10 m2/g · CPC title

• B01J35/40

  characterised by dimensions, e.g. grain size (in a colloidal state B01J35/23; crystallite size B01J35/77) · CPC title