A microfiber composite molecular sieve membrane-loaded active component catalyst and its method and application

A technology of composite molecular sieve and active ingredient, which is applied in the catalytic oxidation of volatile organic compounds. In the field of microfiber composite molecular sieve membrane loaded active ingredient catalyst, it can solve the problems of low catalytic efficiency, poor dispersion, and insufficient loading of active components of catalysts. Uniformity and other issues to achieve the effect of improving catalytic activity, reducing energy consumption, and strengthening mass transfer and heat transfer of catalytic reactions

Active Publication Date: 2019-11-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a microfiber composite molecular sieve membrane-loaded active component catalyst for the existing shortcomings of catalyst active components such as uneven loading, poor dispersion, and low catalytic efficiency.

Method used

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  • A microfiber composite molecular sieve membrane-loaded active component catalyst and its method and application
  • A microfiber composite molecular sieve membrane-loaded active component catalyst and its method and application
  • A microfiber composite molecular sieve membrane-loaded active component catalyst and its method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Preparation of paper-like microfiber composite molecular sieve membrane

[0049] (1-1) Add 3g of coniferous wood fiber and 6g of stainless steel fiber into an appropriate amount of water, and stir at high speed for 10 minutes in a fiber standard dissociator to form a uniform slurry, in which the diameter of the stainless steel fiber is 6.5μm; The sheet machine is used to copy the sheets, and after filtering water, a wet filter cake is formed to obtain a paper-type sintered stainless steel microfiber carrier precursor; the precursor is pressed and dried at 105°C for 12 hours; the dried paper-type sintered stainless steel microfiber carrier precursor N at a flow rate of 200mL / min 2 Sintering at 1050°C for 40 minutes under protection to obtain a paper-like sintered stainless steel microfiber carrier;

[0050] (1-2) The preparation method of MFI type molecular sieve membrane comprises the following steps: A) carrier pretreatment: the paper-like sintered stainless steel...

Embodiment 2

[0058] (1) Preparation of paper-like microfiber composite molecular sieve membrane

[0059] (1-1) Add 3g of coniferous wood fiber and 6g of stainless steel fiber into an appropriate amount of water, and stir at high speed for 10 minutes in a fiber standard dissociator to form a uniform slurry, in which the diameter of the stainless steel fiber is 6.5μm; The sheet machine was used to copy the sheets, and after filtering water, a wet filter cake was formed to obtain a paper-type sintered stainless steel microfiber carrier precursor; the precursor was pressed and dried at 105°C for 12 hours; the dried paper-type sintered stainless steel microfiber carrier precursor N at a flow rate of 200mL / min 2 Sintering at 1050°C for 40 minutes under protection to obtain a paper-like sintered stainless steel microfiber carrier;

[0060] (1-2) A) Carrier pretreatment: Cut the paper-like sintered stainless steel microfiber carrier into a suitable size, dissolve 3g of 3-aminopropyltrimethoxysila...

Embodiment 3

[0068] (1) The circular microfiber composite ZSM-5 molecular sieve membrane (the microfiber composite ZSM-5 molecular sieve membrane is the same as the microfiber composite ZSM-5 molecular sieve membrane prepared in Example 1) that has been cut into a diameter of 1 cm is dried at 110° C. 6h;

[0069] (2) Mix the microfiber composite ZSM-5 molecular sieve membrane of 2g drying with 0.39g iron acetylacetonate in the reaction bed, place the reaction bed in the middle of the quartz tube furnace, and carry out the reaction zone of the tube furnace Vacuum pumping-nitrogen operation, repeat three times, stop the ventilation after the tube furnace is filled with nitrogen to normal pressure; then carry out temperature programming reaction: increase the temperature from room temperature to 200 °C at a rate of 5 °C / min and keep it for 30 minutes, Then raise the temperature from 200°C to 250°C at 3°C / min and keep it for 30 minutes, and finally raise the temperature at 1°C / min to 280°C for...

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Abstract

The invention belongs to the technical field of fine chemical engineering and discloses a microfiber composite molecular sieve membrane loaded active ingredient catalyst as well as a method and application thereof. The method comprises the following steps: firstly, pretreating a microfiber composite molecular sieve membrane; secondly, carrying out vapor phase deposition reaction on a transition metal precursor on the surface of the microfiber composite molecular sieve membrane to obtain a deposition product, wherein the transition metal precursor is transition metal organic salt; thirdly, roasting, calcining and activating the deposition product to obtain the microfiber composite molecular sieve membrane loaded active ingredient catalyst. The method disclosed by the invention has the advantages of low energy consumption, high safety and uniform dispersion of active ingredients; a prepared catalyst has high catalytic efficiency. The catalyst disclosed by the invention is used for catalytic oxidation treatment of volatile organic matters.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and specifically relates to a microfiber composite molecular sieve membrane-supported active component catalyst prepared by a chemical vapor deposition method, a method thereof and an application in catalytic oxidation of volatile organic compounds. Background technique [0002] Volatile organic compounds (VOCs) refer to volatile hydrocarbons and their derivatives, mainly including hydrocarbons, aromatic hydrocarbons, alcohols, aldehydes, ketones, esters, amines, organic acids, etc. Most VOCs are toxic and have a foul smell, which will pollute the environment and cause people to suffer from cumulative respiratory diseases, and some VOCs are carcinogenic. In addition, VOCs easily form photochemical smog with nitrogen oxides in the atmosphere, which is harmful to human health. VOCs have become a worldwide public hazard, and the pollution control of VOCs is imminent. [0003] The treatment ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/46B01J29/76B01D53/86B01D53/72
CPCB01D53/86B01D53/8668B01D2257/704B01D2257/708B01J29/46B01J29/7607B01J2229/18B01J2229/42
Inventor 张会平罗灿鄢瑛
Owner SOUTH CHINA UNIV OF TECH
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