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Nitrogen oxide decomposition device and method

A technology of nitrogen oxides and electrolyte layers, applied in chemical instruments and methods, separation methods, electrolytic components, etc., can solve problems such as expensive, secondary pollution, complex consumption costs, etc.

Active Publication Date: 2015-06-17
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods require the use of rigid ceramic materials, or hazardous compounds such as ammonia, and / or cause secondary pollution such as ammonium sulfate
In addition, these methods are very complex and expensive to consume

Method used

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  • Nitrogen oxide decomposition device and method
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  • Nitrogen oxide decomposition device and method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0044] Example 1La 0.6 Sr 0.4 Ni 0.3 mn 0.7 o 3 (LSNM) synthesis

[0045] La 2 o 3 ,SrCO 3 ,Mn(AC) 2 4H 2 O and NiO were ball-milled in ethanol and sintered at 1300 °C for 8 h to prepare LSNM. X-ray diffraction (XRD) results indicated that the as-synthesized material had a pure LSNM phase.

example 2

[0046] Preparation of Example 2 Multilayer Structure

[0047] A slurry having the composition in Table 1 was prepared, screen-printed on nickel foam with a porosity of 95%, and sintered in argon for 6 hours to obtain a first electrode layer on the porous nickel foam. V-006 was purchased from Heraeus Materials Technology LLC, 24 Union Hill Road, West Conshohocken, PA19428USA.

[0048] The temperature of the sintered material, the rate of temperature change, and the sintering time are shown in image 3 , RT means room temperature. Scanning electron microscopy (SEM) results showed that a uniform crack-free first electrode layer was formed on the foamed nickel, which could be used for further preparation of the reactor, indicating that the first electrode layer had good compatibility with the porous nickel foam.

[0049] Table 1

[0050] composition

weight

V-006

0.1g

α-terpineol

0.4g

LSNM

0.7g

GDC

0.3g

[0051] A...

example 3

[0054] Example 3 Decomposition of nitrogen oxides

[0055] Utilize extrusion method to prepare four 7.5 centimeters long one end open (La 0.8 Sr 0.2 ) 0.95 MnO 3 (LSM) tube. The outer diameter of the tube is 1 cm and the inner diameter is 0.7 cm. By co-sintering with LSM tubes at 1250 °C, dense Zr 0.89 sc 0.1 Ce 0.01 o 2-x (SSZ) electrolyte membrane. Separately prepared La on SSZ electrolyte 0.6 Sr 0.4 Ni 0.3 mn 0.7 o 3 (LSNM), LSNM-SSZ(50wt%), LSNM-NiO-SSZ(40, 30, 30wt%), and NiO-SSZ(50wt%) layers, and sintered at 900-1100℃ to obtain the reactor. La 0.6 Sr 0.4 Ni 0.3 mn 0.7 o 3 (LSNM), LSNM-SSZ(50wt%), LSNM-NiO-SSZ(40wt%, 30wt%, 30wt%), and NiO-SSZ(50wt%) layers have an active catalytic surface area of ​​10 cm 2 . in la 0.6 Sr 0.4 Ni 0.3 mn 0.7 o 3 (LSNM), LSNM-SSZ(50wt%), LSNM-NiO-SSZ(40wt%, 30wt%, 30wt%), and NiO-SSZ(50wt%) were further coated with porous platinum paste layer as porous metal current collector.

[0056] The microstructure of the r...

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Abstract

A apparatus includes a first stack having: a porous metallic current collector; a first electrode layer on the porous metallic current collector; a second electrode layer; a first electrolyte layer between the first electrode layer and the second electrode layer; a third electrode layer on the porous metallic current collector, the third electrode layer sandwiching the porous metallic current collector therebetween with the first electrode layer; a fourth electrode layer; and a second electrolyte layer between the third and the fourth electrode layers. A method includes: providing (he apparatus; applying a first electric field between the first electrode layer and the second electrode layer; applying a second electric field between the third and the fourth electrode layers; and introducing nitrogen oxide to the apparatus to be decomposed into nitrogen and oxygen in the apparatus.

Description

technical field [0001] The invention relates to a device and a method for decomposing nitrogen oxides. Background technique [0002] Nitrogen oxides (NOx, including nitric oxide and / or dinitrogen oxides) are unwanted components in the environment and therefore need to be controlled. Several methods have been devised to break down nitrogen oxides into nitrogen and oxygen. However, these methods require the use of rigid ceramic materials, or hazardous compounds such as ammonia water, and / or cause secondary pollution such as the generation of ammonium sulfate. Furthermore, these methods are very complex and expensive to consume. [0003] Therefore, it is necessary to provide a new device and method for decomposing nitrogen oxides to solve the above problems. Contents of the invention [0004] The purpose of the present invention is to provide a new nitrogen oxide decomposition device and method. [0005] On the one hand, the nitrogen oxide decomposition device according t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/56B01D53/82B01D53/86C25B9/17C25B9/23
CPCB01D53/326C25B1/00C25B1/02B01D2257/404C25B9/23C25B9/17C25B9/70B01D2259/818
Inventor 王世忠黄群健杨海傅琪佳安德鲁·沙皮罗张华
Owner GENERAL ELECTRIC CO