Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultra-stabilization treatment method of high-rare-earth-content in-situ crystallization catalyst

A technology with high rare earth content and in-situ crystallization, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc.

Active Publication Date: 2015-09-23
湖北赛因斯科技开发有限公司
View PDF11 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1913965A reported that the rare earth content of the in-situ catalyst can reach 12%, but the rare earth content is less than 3% when preparing ultra-stable catalyst products with low unit cell constant, and the unit cell constant is around 2.450nm
For high rare earth content, such as rare earth is higher than 7m%, the ultra-stabilization treatment process of the catalyst has not been seen in the literature and related patent reports

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultra-stabilization treatment method of high-rare-earth-content in-situ crystallization catalyst
  • Ultra-stabilization treatment method of high-rare-earth-content in-situ crystallization catalyst
  • Ultra-stabilization treatment method of high-rare-earth-content in-situ crystallization catalyst

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0034] (1) Ammonium exchange

[0035]Add 1200g of deionized water to the stainless steel kettle, add 300g of in-situ crystallization NaY catalyst and 90g of ammonium chloride under stirring conditions, adjust the pH value to 3.0-4.0 with 4% dilute hydrochloric acid solution, and exchange at 80°C for 40 minutes , filtered, and the filter cake was rinsed with deionized water, and exchanged again in the same way to obtain Na 2 NH with O content below 4.0m% 4 Y-type catalyst.

[0036] (2) Rare earth exchange

[0037] Add 1200g of deionized water to the above product, add RECl 3 Rare earth (RE 2 o 3 8% of the weight of the catalyst) solution, at a pH of 3.0-4.0, exchanged for 40 minutes at 80°C to obtain REY and NH 4 Type Y catalyst mixture.

[0038] (3) Once roasted

[0039] The above mixture was hydrothermally calcined at 550° C. for 4 hours.

[0040] (4) Rare earth supplementation for materials after first roasting

[0041] Add 1200g of deionized water and 60g of ammon...

example 2

[0047] According to the method of Example 1, the in-situ crystallized NaY type product is subjected to ultra-stabilization modification treatment: wherein the step (5) roasting temperature gradient is: the filter cake is roasted at 550°C for 2 hours, and then heated to 850°C and then roasted for 2 hours. Other conditions are the same as example 1 to obtain catalyst A2.

example 3

[0049] (1) Ammonium exchange

[0050] Add 1200g of deionized water to the stainless steel kettle, add 300g of in-situ crystallization NaY catalyst and 90g of ammonium chloride under stirring conditions, adjust the pH value to 3.0-4.0 with 4% dilute hydrochloric acid solution, and exchange at 80°C for 40 minutes , filtered, and the filter cake was rinsed with deionized water, and exchanged again in the same way to obtain Na 2 NH with O content below 4.0m% 4 Y-type catalyst.

[0051] (2) Rare earth exchange

[0052] Add 1200g of deionized water to the above product, add RECl 3 Rare earth (RE 2 o 3 6% by weight of the catalyst) solution, exchanged for 40 minutes at pH 3.0-4.0, 80°C, to obtain REY type and NH 4 Type Y catalyst mixture.

[0053] (3) Once roasted

[0054] The above mixture was fired at 550°C for 4 hours.

[0055] (4) Rare earth supplementation for materials after first roasting

[0056] Add 1200g of deionized water and 60g of ammonium chloride to the above...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Cell constantaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ultra-stabilization treatment method of a high-rare-earth-content in-situ crystallization catalyst. The ultra-stabilization treatment method includes that the ultra-stabilization catalyst high in rare earth content and lower than 2.455nm in lattice constant is prepared by high-temperature hydrothermal calcining of NaY-type catalyst for in-situ crystallization under different temperature gradient conditions after multiple times of exchange of ammonium ions and rare earth ions. The high-rare-earth-content in-situ crystallization catalyst has the advantages of high rare earth content, high silicon-aluminum ratio, high activity, high stability and excellent coke selectivity.

Description

technical field [0001] The invention relates to an ultra-stabilization treatment method of an in-situ crystallization catalyst, more specifically, an ultra-stabilization treatment method of an in-situ crystallization catalyst with high rare earth content. Background technique [0002] From the emergence of molecular sieve catalytic cracking (FCC) catalysts in 1960 to the present, the preparation process of Y-type molecular sieve FCC catalysts can be roughly classified into two types: (a) molecular sieves are prepared separately and then compounded with carriers; (b) molecular sieves are made of natural kaolin Bit crystallization, part of the kaolin is transformed into Y zeolite, and part of the kaolin is used as a carrier. [0003] The former method, the preparation of the catalyst, is to beat the active component and the carrier (filler and binder) together, and spray dry it to form a microsphere catalyst with a particle size of 0-150 microns and an average particle size of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J29/08
Inventor 潘红霞
Owner 湖北赛因斯科技开发有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com