Electrode composition for removing nitrogen oxides, and apparatus and method thereof
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A nitrogen oxide, electrode technology, used in chemical instruments and methods, electrodes, separation methods, etc.
Inactive Publication Date: 2016-05-04
GENERAL ELECTRIC CO
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However, existing electrode compositions, devices and methods still need to be improved
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example 1
[0049] Example 1La 0.6 Sr 0.4 Ni 0.3 mn 0.7 o 3 synthesis
[0050] La 2 o 3 ,SrCO 3 ,Mn(AC) 2 4H 2 La 0.6 Sr 0.4 Ni 0.3 mn 0.7 o 3 . X-ray diffraction (XRD) analysis showed that the synthesized La 0.6 Sr 0.4 Ni 0.3 mn 0.7 o 3 The material has a pure phase.
example 2
[0051] Example 2BaZr 0.1 Ce 0.7 Y 0.2 o 3 powder preparation
[0052] BYZGR 0.1 Ce 0.7 Y 0.2 o 3 Powders are prepared by solid state reaction methods. Stoichiometric high-purity barium carbonate, zirconia, yttrium oxide and ceria powders (all from Sinopharm Chemicals Co., Ltd., Shanghai, China) were mixed with ethanol and ball milled for about 16 hours. The resulting mixture is dried and calcined in air at about 1450°C for about 6 hours to form BaZr 0.1 Ce 0.7 Y 0.2 o 3 powder. The calcined powder was mixed with ethanol and ball milled for about 16 hours. After ethanol drying, the fine BaZr 0.1 Ce 0.7 Y 0.2 o 3 Powder (d 50 = 1.5 μm) was prepared.
example 3
[0053] Example 3 Adsorption test
[0054] BYZGR 0.1 Ce 0.7 Y 0.2 o 3 The powder and carbon black were separately placed in a thermogravimetric analyzer with a nitrogen flow of 200 ml / min containing 100 ppm nitric oxide and 16% oxygen. The temperature was raised to 850°C at a rate of 5°C / min. A mass spectrometer (HPR20 Hyde Analytical, Warrington, England) was connected to the thermogravimetric analyzer for the detection of nitric oxide / nitrogen dioxide in the exhaust stream of the thermogravimetric analyzer. Place BaZr separately 0.1 Ce 0.7 Y 0.2 o 3 Nitric oxide signal intensity (arbitrary units) in the output stream of the thermogravimetric analyzer for powder and carbon black as Figure 5 shown.
[0055] Figure 5 Display, place BaZr 0.1 Ce 0.7 Y 0.2 o 3 The nitric oxide signal intensity in the output stream of the thermogravimetric analyzer of the powder has an obvious peak, but there is no obvious peak in the output stream of the thermogravimetric analyzer ...
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Abstract
The invention relates to an electrode composition for removing nitrogen oxides, and an apparatus and a method thereof. The electrode composition for removing nitrogen oxides comprises a catalysis material and an adsorption material, wherein the adsorption material is a perovskite material with the chemical formula of AaBbO3-delta, wherein a is greater than 0.9 and not greater than 1.2, b is greater than 0.9 and not greater than 1.2, and delta is greater than -0.5 and lower than 0.5; A comprises a first element and a selectable second element, the first element is selected from calcium, strontium, barium, lithium, sodium, potassium, rubidium and an arbitrary combination thereof, and the second element is selected from yttrium, bismuth, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and an arbitrary combination thereof; and B is selected from silver, gold, cadmium, cerium, cobalt, chromium, copper, dysprosium, erbium, europium, iron, gallium, gadolinium, hafnium, holmium, indium, iridium, lanthanum, lutetium, manganese, molybdenum, niobium, neodymium, nickel, osmium, palladium, promethium, praseodymium, platinum, rhenium, rhodium, ruthenium, antimony, scandium, samarium, tin, tantalum, terbium, technetium, titanium, thulium, vanadium, tungsten, yttrium, ytterbium, zinc, zirconium, and an arbitrary combination thereof. The invention also relates to a corresponding apparatus and a corresponding method.
Description
technical field [0001] The present invention relates to electrode composition, device and method for removing nitrogen oxides. Background technique [0002] Nitrogen oxides (NOx, including nitric oxide and / or nitrogen dioxide) are unwanted substances in the environment and need to be removed to reduce the amount of emissions to the environment. Several electrochemical methods for NOx removal have been devised. However, existing electrode compositions, devices and methods still need to be improved. [0003] Therefore, it is necessary to provide new electrode compositions, devices and methods for removing nitrogen oxides. Contents of the invention [0004] The purpose of the present invention is to provide a new electrode composition, device and method for removing nitrogen oxides. [0005] On the one hand, an embodiment of the present invention relates to an electrode composition for removing nitrogen oxides, which includes: a catalytic material and an adsorption materia...
Claims
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