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

A kind of mfi structure nano-sheet molecular sieve catalyst, its preparation method and use

A nanosheet, molecular sieve technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low isomerization ratio of aviation kerosene fractions, poor thermal stability at high temperature, poor performance at low temperature, etc. Low cost, good isomerization effect, and the effect of improving deoxygenation activity

Active Publication Date: 2020-12-22
TIANJIN UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The applicable temperature of the catalysts used in the one-step catalytic conversion of animal and vegetable oils and their derivatives to prepare aviation kerosene components in the above literatures is generally high (>300°C). The kerosene fraction contains a high content of aromatics (>40%), and its thermal stability at high temperature is poor; for MCM-41 and SAPO-11 weakly acidic carrier catalysts, the reaction temperature is as high as 350°C or more, and the aromatics content of aviation kerosene fraction High, while for activated carbon, SiO 2 and Al 2 o 3 and other carriers, the product is mainly diesel fraction, and the isomerization ratio of aviation kerosene fraction is relatively low, and the low temperature performance is poor

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 mfi structure nano-sheet molecular sieve catalyst, its preparation method and use
  • A kind of mfi structure nano-sheet molecular sieve catalyst, its preparation method and use
  • A kind of mfi structure nano-sheet molecular sieve catalyst, its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]The TEM image of the catalyst prepared in Examples 1-3 is as followsFigure 1-3Shown. Fromfigure 1 It can be seen that the thickness of the nanosheet layer is 2-3nm, and the size of the metal nanoparticle is about 8nm;figure 2 It can be seen that the thickness of the nanosheet layer is 8-12nm, and the size of the metal nanoparticle is about 12nm;image 3 It can be seen that the thickness of the nanosheet layer is 20-30nm, and the size of the metal nanoparticle is about 20nm. The above description has achieved quantitative control of the thickness of the catalyst nanoplatelets by changing the amount of template agent added in the molecular sieve crystallization solution. The amount of template used in Example 1 is approximately lower than 33.3 wt% of the lowest used amount in the prior art.

[0038][Examples 4-10] Weigh 20.833g of TEOS and 0.111g of Al2(SO4)3·18H2O, 2.400g of NaOH, 3.528g of H2SO4Solution (mass fraction of 50.0wt%), 3.634g of double quaternary ammonium salt surfacta...

Embodiment 7

[0041]The TEM image of the catalyst prepared in Example 7 is as followsFigure 4 Shown. FromFigure 4 It can be seen that when the Ni loading amount is 20.0wt%, the metal nanoparticle size distribution in the prepared catalyst is relatively uniform, and the particle size is about 18nm. Comparative Example 1 shows that when the loading amount of Ni increases from 10.0% by weight to 20.0% by weight, the size of the nanoparticles increases from about 8nm to about 18nm.

[0042][Embodiment 11-17] where Al2(SO4)3·18H2The change in the amount of O, the ratio of the amount of silicon-aluminum substance in the synthesis solution from 10 to positive infinity, where the Al used in Example 112(SO4)3·18H2The mass of O is 3.332g, of which Al used in Example 122(SO4)3·18H2The mass of O is 1.111g, and the Al used in Example 132(SO4)3·18H2The mass of O is 0.3332g, and the Al used in Example 142(SO4)3·18H2The mass of O is 0.1667g, and the Al used in Example 152(SO4)3·18H2The mass of O is 0.1111g, and the...

Embodiment 11

[0043]The TEM image of Example 11 is asFigure 5 Shown. FromFigure 5 It can be seen that the thickness of the catalyst nanoplatelets is 2-3 nm. Comparative Example 1 shows that changing the ratio of silicon to aluminum in the crystallization solution has almost no effect on the thickness of the catalyst nanolayer.

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an MFI-structure nanosheet molecular sieve catalyst and a preparation method and the application thereof. The nanosheet thickness thereof is adjustable in the range of 2-30nm.The invention further discloses a preparation method of the MFI-structure nanosheet molecular sieve catalyst and the application thereof to preparation of aviation fuel.

Description

Technical field[0001]The invention belongs to the technical field of chemical engineering, and specifically relates to a molecular sieve catalyst with adjustable thickness of MFI-structured nano-sheets, a preparation method thereof, and application for catalytic preparation of aviation fuel.Background technique[0002]With the intensification of environmental pollution and the intensification of fossil energy crises such as oil and coal, it is urgent to explore new renewable energy sources. Biodiesel, as a new renewable energy source, has attracted more and more attention; catalytic conversion of vegetable oils and their derivatives The preparation of high-performance aviation kerosene is one of the important ways to deal with environmental pollution and energy crisis.[0003]Catalytic conversion of animal and vegetable fats and their derivatives to prepare high-performance aviation kerosene fractions can be divided into one-step and two-step methods. Due to the high energy consumption,...

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): B01J29/46C10G3/00
CPCB01J29/46C10G3/49C10G2300/1011C10G2300/70C10G2400/08Y02P30/20
Inventor 王庆法冯富祥张香文王涖刘国柱邹吉军
Owner TIANJIN UNIV
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