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

Sapo-34 molecular sieve, its synthesis method and application, and the method of methanol to olefin

A technology of SAPO-34, synthesis method, applied in molecular sieve and alkali exchange phosphate, molecular sieve catalyst, containing molecular sieve catalyst, etc., can solve the problem of adding a large amount of template agent, reduce the length of material diffusion path, long catalytic life, The effect of prolonging the life of the catalyst

Active Publication Date: 2021-10-08
CHINA PETROLEUM & CHEM CORP +1
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN104556093A uses triethylamine (TEA) and tetramethylammonium hydroxide (TMAOH) as composite templates, and adds organic matter n-hexane to synthesize cubic SAPO-34 grains with a size of 100-300nm, wherein n(TEA): n(Al 2 o 3 )=4.41, n(TMAOH):n(Al 2 o 3 )=0.375, n(C 6 h 14 ):n(Al 2 o 3 )=1.0, but the amount of template added is large, and additional chemical reagents are introduced

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
  • Sapo-34 molecular sieve, its synthesis method and application, and the method of methanol to olefin
  • Sapo-34 molecular sieve, its synthesis method and application, and the method of methanol to olefin
  • Sapo-34 molecular sieve, its synthesis method and application, and the method of methanol to olefin

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] According to the first aspect of the present invention, the present invention provides a synthetic method of SAPO-34 molecular sieve, wherein, said SAPO-34 molecular sieve is synthesized by phosphor-aluminum dry glue liquid-phase conversion method or hydrothermal method, and the template used for synthesis is The combination of the template agent R1 and the template agent R2, the template agent R1 is 1-methylpyrrolidine, and the template agent R2 is tetraethylammonium hydroxide.

[0043] According to the present invention, although the ratio range of template R1 and template R2 used in combination is wider, for example, it can be 0.5-100:1, but in order to further provide the catalytic performance of the SAPO-34 molecular sieve synthesized by the combination template , and under the premise of reducing the amount of expensive TEAOH and saving costs, the catalytic performance of the synthesized SAPO-34 molecular sieve is not significantly affected. The molar ratio of the ...

specific Embodiment approach

[0045] According to a specific embodiment of the present invention, the liquid-phase conversion method of the phosphorus-aluminum dry glue comprises the following steps:

[0046] (1) providing a mixture A containing a phosphorus source, an aluminum source and water;

[0047] (2) Aging the mixture A, and then drying to obtain the phosphor-aluminum dry glue;

[0048] (3) initial gel mixture B is provided, and described initial gel mixture B contains the phosphorus-aluminum colloid made in step (2), silicon source, templating agent and water;

[0049] (4) crystallizing the initial gel mixture B;

[0050] (5) The crystallized product is subjected to solid-liquid separation, and the obtained solid phase is washed with deionized water until neutral, dried and optionally calcined.

[0051] According to a specific embodiment of the present invention, the hydrothermal method comprises the following steps:

[0052] (1) providing an initial gel mixture C, which contains a phosphorus s...

Embodiment 1

[0089] 4.91 g of pseudoboehmite (Al 2 o 3 Massfraction 83%) and 33.78 grams of deionized water are stirred and mixed to evenly, and 9.22 grams of orthophosphoric acid (H 3 PO 4 mass fraction 85%), fully stirred at 70°C, and aged for 12 hours to prepare mixture A. The mixture A was poured into a tray, and dried at 80° C. for 24 hours to obtain a phosphoraluminum xerogel.

[0090] Get 6.09 grams of obtained phosphorus-aluminum dry glue (solid content 80.11%) and add in the polytetrafluoroethylene lining, and add 0.19 grams of solid silica gel (SiO 2 Mass fraction 93%), 1.83 gram deionized water, 3.48 gram 1-methylpyrrolidine (C 5 h 11 N massfraction 98%), 5.56 grams of tetraethylammonium hydroxide (TEAOH massfraction is 26.5%), stir well, wherein the adding molar ratio of each component is: P 2 o 5 / Al 2 o 3 =1.0, SiO 2 / Al 2 o 3 =0.15, R1 / Al 2 o 3 =2.0, R2 / Al 2 o 3 =0.5,H 2 O / Al 2 o 3 =20.

[0091] Cover the polytetrafluoroethylene liner with the above react...

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of synthesis of catalytic materials, and discloses a SAPO-34 molecular sieve, its synthesis method and application, and a method for producing olefins from methanol. The template used in the synthesis is a combination of template R1 and template R2, template R1 is 1-methylpyrrolidine, and template R2 is tetraethylammonium hydroxide. The SAPO-34 molecular sieve synthesized by the method of the present invention can be used in the reaction of methanol conversion to produce low-carbon olefins, and has short diffusion paths for reactants and products, good accessibility to the active center, and relatively strong / strong acid content and total acid content. Low, not easy to coke deactivation and other characteristics, when catalyzing the MTO reaction, it has excellent MTO catalytic performance.

Description

technical field [0001] The invention relates to the field of synthesis of catalytic materials, in particular to a SAPO-34 molecular sieve, a synthesis method and application thereof, and a method for producing olefins from methanol. Background technique [0002] As important basic chemical raw materials, ethylene and propylene play an extremely important role in national economic and social development. Their production technology and production capacity are one of the important symbols to measure the development level of a country's petrochemical industry. At present, my country's ethylene and propylene mainly come from petroleum routes such as light hydrocarbons, naphtha steam cracking and catalytic cracking. In recent years, coal and natural gas are used as raw materials to produce methanol, and methanol conversion to produce low-carbon olefins (methanol to olefins, MTO) technology has received extensive research and attention, and has become the most successful non-petro...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/54C01B37/08B01J29/85C07C1/20C07C11/06C07C11/04
CPCB01J29/85C01B37/08C01B39/54C01P2002/72C01P2002/80C01P2004/03C07C1/20C07C2529/85C07C11/06C07C11/04Y02P20/52Y02P30/20Y02P30/40
Inventor 赵晨梁世航王永睿陈俊文慕旭宏舒兴田
Owner CHINA PETROLEUM & CHEM CORP
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