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Fibrous nano porous V2O5-K2SO4 / composite carrier catalyst and application thereof

A composite carrier, nanoporous technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effects of reducing emissions, optimizing preparation process conditions, strong adsorption and catalytic performance

Inactive Publication Date: 2013-04-10
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the purposes of this invention is to provide a fibrous nanoporous V 2 o 5 -K 2 SO 4 / composite carrier catalyst

Method used

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  • Fibrous nano porous V2O5-K2SO4 / composite carrier catalyst and application thereof
  • Fibrous nano porous V2O5-K2SO4 / composite carrier catalyst and application thereof
  • Fibrous nano porous V2O5-K2SO4 / composite carrier catalyst and application thereof

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Experimental program
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Effect test

Embodiment 1

[0040] (1) Synthesis of carbon nanofibers on macro matrix materials with ordered structure

[0041] ①、SiO2 2 Synthesis of carbon nanofiber templates on fibers

[0042] Metal Ni is used as the catalyst active component, and SiO 2 fiber as carrier, with CH 4 The gas is used as the carbon source, the gas flow rate is controlled at 20 mL / min, the temperature is at 550°C, and the reaction is carried out at normal pressure for 2 hours to obtain solidification on SiO 2 carbon nanofibers on fibers;

[0043] The resulting solidification on SiO 2 SEM images of carbon nanofibers on fibers figure 1 shown, from figure 1 It can be seen that a large number of carbon nanofibers are uniformly solidified on SiO 2 On the fiber, its diameter distribution is between 40-70nm;

[0044] ②, Al 2 o 3 Synthesis of carbon nanofiber templates on fibers

[0045] According to the above SiO 2 Synthesis of carbon nanofiber templates on fibers in Al 2 o 3 Synthesis of carbon nanofiber templates o...

Embodiment 2

[0058] V 2 o 5 -K 2 SO 4 / Experiment of composite carrier catalyst catalytic oxidation of carbon black particles

[0059] The catalytic oxidation performance experiment of carbon black particle is carried out by thermogravimetric-differential thermal analyzer, and its operation is as follows: the final preparation of embodiment 1 V 2 o 5 -K 2 SO 4 / composite carrier (Al 2 o 3 / SiO 2 Fiber composite carrier) The catalyst and carbon black particles were kept at a weight ratio of 1:10. After mixing and grinding, they were placed in the crucible of a thermogravimetric-differential thermal analyzer. The temperature of the reaction system rose from room temperature to 700 °C at a rate of 10 °C / min. ℃ to observe the change of the thermogravimetric curve. During the process, air was continuously fed in as the oxidant, and the flow rate was controlled at 30 mL / min. Another α-Al with the same weight ratio 2 o 3 The control experiment was carried out with the mixture of ...

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Abstract

The invention discloses a fibrous nano porous V2O5-K2SO4 / composite carrier catalyst and a preparation method thereof. According to a nano carbon fiber template technology, fibrous nano porous metallic oxides can be first solidified on orderly structured macroscopic matrix materials to obtain composite carriers; then composite carrier coatings are loaded with corresponding active ingredients V2O5-K2SO4, so finally the fibrous nano porous V2O5-K2SO4 / composite carrier catalyst is obtained. The fibrous nano porous V2O5-K2SO4 / composite carrier catalyst of the present invention has strong adsorption and catalysis performance, and can overcome various abuses, such as pressure drop, heat transfer, low contact efficiency and difficulty in separating catalyst, caused by using a traditional nano powder catalyst in a catalytic reaction, so as to more efficiently reduce soot particle discharged from diesel vehicle tail gas.

Description

technical field [0001] The invention relates to a high-performance catalytic oxidation of carbon black particles in diesel vehicle exhaust fibrous nanoporous V 2 o 5 -K 2 SO 4 A composite carrier catalyst belongs to the field of inorganic catalytic materials. Background technique [0002] Carbon nanofibers not only have low density, high specific strength, high electrical and thermal conductivity, strong corrosion resistance and high temperature resistance, but also have the advantages of small number of defects, large specific surface area and compact structure. Adsorbents, composite materials and other fields have broad application prospects. In recent years, the template method has been widely used in the preparation of nanomaterials due to its advantages of simplicity, economy, high reproducibility, and controllable shape, structure, and size orientation of the product. Carbon nanofibers are a potential It is a promising template material, which can be prepared by c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/055B01J35/06B01J35/10B01D53/94
Inventor 吴强吴江
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER