Supercharge Your Innovation With Domain-Expert AI Agents!

A kind of preparation method of hedgehog spherical suz-4

A SUZ-4, spherical technology, applied in the field of silicon, can solve problems such as no recurrence, and achieve the effect of reducing production costs

Active Publication Date: 2020-07-03
CHINA CATALYST HLDG CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] So far, there have been no reports on the synthesis of SUZ-4 molecular sieves for the synthesis of new templates

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
  • A kind of preparation method of hedgehog spherical suz-4
  • A kind of preparation method of hedgehog spherical suz-4
  • A kind of preparation method of hedgehog spherical suz-4

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 2.48g of aluminum isopropoxide and 5.82g of KOH (85%) to 37.96g of deionized water to form solution A, and stir for 0.5h to completely dissolve the aluminum source. Add 30.01 g of silica sol (40%), 2.55 g of ethylenediamine, and 6.01 g of cyclohexylamine into 30 g of deionized water, mix and stir evenly to form solution B. Then A solution and B solution were mixed and stirred for 1 h to form a white gel. The formed gel was transferred to a 170ml polytetrafluoroethylene reactor, dynamically rotated at a speed of 20r / min, and crystallized at 150°C for 4 days. The obtained sample was washed, dried at 120°C, and calcined at 550°C for 6 hours to obtain SUZ-4 molecular sieve with a crystallinity of 85%. Its XRD spectrum is attached figure 1 .

[0028] Initial gel molar composition: 33.3SiO 2 :Al 2 o 3 :14.7KOH:7EDA:10CHA:798H 2 o

Embodiment 2

[0030] Add 2.48g of aluminum isopropoxide and 5.82g of KOH (85%) to 37.96g of deionized water to form solution A, and stir for 0.5h to completely dissolve the aluminum source. Add 30.01 g of silica sol (40%), 2.19 g of ethylenediamine, and 6.01 g of cyclohexylamine into 30 g of deionized water, mix and stir evenly to form solution B. Then A solution and B solution were mixed and stirred for 1 h to form a white gel. The formed gel was transferred to a 170ml polytetrafluoroethylene reactor, dynamically rotated at a speed of 20r / min, and crystallized at 150°C for 4 days. The obtained sample was washed, dried at 120°C, and calcined at 550°C for 6 hours to obtain a pure SUZ-4 molecular sieve with a crystallinity of 98%, and a Si / Al ratio of 15.6 as measured by an X-ray fluorescence spectrometer. attached figure 2 The XRD spectrum of the sample obtained in this example is given. attached image 3 The SEM image of the sample obtained in this example is given.

[0031] Initial g...

Embodiment 3

[0033] Add 2.48g of aluminum isopropoxide and 5.82g of KOH (85%) to 37.96g of deionized water to form solution A, and stir for 0.5h to completely dissolve the aluminum source. Add 30.01 g of silica sol (40%), 1.82 g of ethylenediamine, and 6.01 g of cyclohexylamine into 30 g of deionized water, mix and stir evenly to form solution B. Then A solution and B solution were mixed and stirred for 1 h to form a white gel. The formed gel was transferred to a 170ml polytetrafluoroethylene reactor, dynamically rotated at a speed of 20r / min, and crystallized at 150°C for 4 days. The obtained sample was washed, dried at 120° C., and calcined at 550° C. for 6 hours. The spectrum of the sample in this experiment was the same as in Example 2, except that the crystallinity was 80%.

[0034] Initial gel molar composition: 33.3SiO 2 :Al 2 o 3 :14.7KOH:5EDA:10CHA:798H 2 o

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

No PUM Login to View More

Abstract

The invention aims to provide a preparation method for synthesizing a SUZ-4 molecular sieve by using a novel cheap template agent. Firstly, preparing a silicon-aluminum mixed glue solution, and then adding a template agent of ethylenediamine (EDA) and cyclic ethylamine (CHA) into the mixed glue solution according to an arbitrary ratio for mixing, then adding the mixture into a reaction kettle forhigh-temperature crystallization growth; wherein the crystallization temperature is 130-170 DEG C, and the crystallization time is 2-5 days, and finally synthesizing the hedgehog spherical SUZ-4 molecular sieve generated by the cheap template agent. The method is simple in process and convenient to operate, not only greatly reduces the synthesis cost of the molecular sieve, but also obtains the hedgehog spherical SUZ-4 molecular sieve.

Description

technical field [0001] The invention belongs to the technical field of silicon and aluminum oxide molecular sieves, and in particular relates to the preparation of hedgehog-shaped SUZ-4 by mixing two relatively cheap templates. [0002] technical background [0003] In 1992, the British BP company first discovered and prepared SUZ-4 molecular sieve. Barri et al. in containing Si0 2 ,Al 2 0 3 , The initial gel of KOH and NaOH mixture was added with organic tetraethyl hydroxide (TEAOH) and quinuclidine as templates to synthesize SUZ-4 molecular sieves. This is the first synthesis of this molecular sieve, but the poor repeatability of the synthesis method hinders the research and development of SUZ-4 molecular sieve to a certain extent. [0004] In 1999, Asensi et al. improved the reproducibility of SUZ-4 molecular sieve synthesis. They used a new initial gel ratio - 21.2Si0 at a temperature of 150 °C. 2 :Al 2 0 3 :7.9KOH:2.6TEAOH:498.6H 2 0 (molar ratio), there is no Na...

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): C01B39/48
CPCC01B39/48C01P2002/72
Inventor 蒋山高晓坤王炳春李进王建青
Owner CHINA CATALYST HLDG CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com