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

Core-shell metal hybrid silicate-1/SAPO-5 composite molecular sieve ceramic membrane and preparation method thereof

A SAPO-5, composite molecular sieve technology, applied in catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of long time, low film formation rate, high energy consumption, delay deactivation, reduce preparation cost, the effect of improving completeness

Active Publication Date: 2018-11-16
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional hydrothermal synthesis method for preparing molecular sieve membranes has the disadvantages of long time, high energy consumption and low film formation rate due to the restriction of its heating method.

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
  • Core-shell metal hybrid silicate-1/SAPO-5 composite molecular sieve ceramic membrane and preparation method thereof
  • Core-shell metal hybrid silicate-1/SAPO-5 composite molecular sieve ceramic membrane and preparation method thereof
  • Core-shell metal hybrid silicate-1/SAPO-5 composite molecular sieve ceramic membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] A kind of preparation method of core-shell type metal hybrid silicate-1 / SAPO-5 composite molecular sieve ceramic membrane proposed by the present invention comprises the following steps:

[0034] 1. Preparation of silicate-1 molecular sieve synthesis liquid: using silicon source, organic template, transition metal salt and water as raw materials, the molar composition of raw materials in the reaction system is calculated as oxides: SiO 2 :aTemplate:bH 2 O: cX, a=0.001~0.03, b=40~1000, c=0.015~0.1, X is a transition metal salt, the transition metal is selected from Fe, Co or Ni; the organic template (Template) is selected from tetrapropyl hydrogen Ammonium oxide (TPAOH), tetrapropylammonium bromide (TPABr), triphenylamine (TPA) or triethylamine (TEA), the silicon source is selected from tetraethyl orthosilicate, silica sol, silicic acid or water glass.

[0035] According to the above ratio and dosage, in the stirring state, add the weighed silicon source dropwise into t...

Embodiment 1

[0045] (1) Preparation of Co hybrid silicate-1 molecular sieve synthesis solution

[0046] According to SiO 2 :0.001TPABr:40H 2 O:0.1Co(NO 3 ) 3 Prepare Co hybrid silicate-1 molecular sieve synthetic liquid with a material ratio of (mol), the silicon source is tetraethyl orthosilicate, according to the above-mentioned ratio of materials, add tetraethyl orthosilicate under stirring conditions, and stir and dissolve for 5 hours , to make it completely hydrolyzed to obtain an aqueous solution of ethyl orthosilicate, and after the aqueous solution of ethyl orthosilicate is clarified, add Co(NO 3 ) 3 and TPABr, stirring and dissolving for 3 hours, and after the substances are completely dissolved, adjust the pH of the reaction solution between 10 and 12 to obtain a Co hybrid silicate-1 molecular sieve synthetic solution.

[0047] (2) Preparation of Co hybridized SAPO-5 molecular sieve synthesis solution

[0048] According to Al 2 o 3 :1.3P 2 o 5 :0.5SiO2 2 :3TPABr:1000H ...

Embodiment 2

[0064] (1) Preparation of Fe hybrid silicate-1 molecular sieve synthesis solution

[0065] It is basically the same as Example 1, except that in the process of preparing silicate-1 molecular sieve, the silicon source used is silica sol, and the material formula of the synthetic liquid is SiO 2 :0.03TPAOH:1000H 2 O: 0.015FeCl 3 .

[0066] (2) Preparation of Fe hybrid SAPO-5 molecular sieve synthesis solution

[0067] It is basically the same as Example 1, except that during the preparation of the Fe hybrid SAPO-5 molecular sieve synthesis solution, the aluminum source, silicon source, organic template and active metal used are sodium aluminate, silica sol, TPA and Ferric chloride, the material formula is Al 2 o 3 :0.8P 2 o 5 :0.05SiO2 2 :0.75TPA:45H 2 O:0.3FeCl 3 .

[0068] (3) Preparation of Fe hybrid core-shell silicate-1 / SAPO-5 composite molecular sieve seed crystals

[0069] The reaction temperature of Fe hybrid silicate-1 molecular sieve synthesis solution was ...

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a core-shell metal hybrid silicate-1 / SAPO-5 composite molecular sieve ceramic membrane and a preparation method thereof. The preparation method of the core-shell metal hybridsilicate-1 / SAPO-5 composite molecular sieve ceramic membrane comprises the following steps: (1) preparing a silicate-1 molecular sieve synthesis solution; (2) preparing an SAPO-5 molecular sieve synthesis solution; (3) preparing core-shell metal hybrid silicate-1 / SAPO-5 molecular sieve composite seed crystals; (4) preparing the core-shell metal hybrid silicate-1 / SAPO-5 composite molecular sieve ceramic membrane. The preparation method is simple in process, shorter in consumed time, lower in cost and higher in membrane forming rate.

Description

technical field [0001] The invention belongs to the technical fields of inorganic porous materials, membrane separation and membrane catalysis, and in particular relates to a core-shell metal hybrid silicate-1 / SAPO-5 composite molecular sieve ceramic membrane and a preparation method thereof. Background technique [0002] Composite molecular sieves use special synthesis techniques to combine molecular sieves with different pore structures and acidities to shorten the distance between different types of molecular sieves. No synergistic catalytic performance. The multiple stacked structure of composite molecular sieves can avoid the defects of single pore structure. The multi-level pore system can provide pores with different sizes, which can effectively solve the problem of mass transfer in the reaction process. application prospects. [0003] silicate-1 molecular sieve is a molecular sieve with a unique high-silicon three-dimensional cross-straight channel, with a pore siz...

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): B01J29/00B01J35/06B01J37/34C10G11/05
CPCC10G11/05B01J29/005B01J37/346B01J29/85B01J29/04B01J2229/186B01J35/59
Inventor 杨文申谢建军阴秀丽吴创之
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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