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Tail gas purification catalyst with soft metal wire carrier substrate

A tail gas purification and metal wire technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, catalyst activation/preparation, etc., can solve the problem of invariable structure, difficult application of catalyst, complicated installation, etc. problems, to achieve the effect of improving adhesion, low cost, and convenient installation

Active Publication Date: 2014-05-21
JHM HI TECH NANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two support structures are invariable in use, and the installation is complicated, which makes it difficult to apply to different environments for the prepared catalysts.

Method used

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  • Tail gas purification catalyst with soft metal wire carrier substrate
  • Tail gas purification catalyst with soft metal wire carrier substrate

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Prepare the pretreated FeCrAl metal wire soft carrier: soak 15g of FeCrAl metal wire soft carrier in acetone solution for 10 minutes, remove it and blow it dry with a hair dryer; then soak it in 2% hydrochloric acid for 5 minutes, take it out and dry it; Rinse with caustic soda solution for 3 minutes, then rinse with pure water. Place in an air-ventilated muffle furnace for calcination at 950°C for 5 hours, and then cool down to room temperature for coating.

[0033] Preparation of aluminum-alkaline earth composite oxide, every 100 parts of aluminum-alkaline earth composite oxide is made of the following components by weight: 85 parts of aluminum oxide, 5 parts of alkaline earth metal oxide, 10 parts of rare earth element: according to the element ratio in the product Take the raw materials of aluminum nitrate, magnesium carbonate and lanthanum carbonate and disperse them in water, in the presence of organic template agent hexadecyltrimethylammonium bromide, hydrotherma...

Embodiment 2

[0040] Prepare the pretreated FeCrAl metal wire soft carrier: soak 15g of FeCrAl metal wire soft carrier in acetone solution for 10 minutes, remove it and blow it dry with a hair dryer; then soak it in 1% hydrochloric acid for 5 minutes, take it out and dry it; Rinse with caustic soda solution for 3 minutes, then rinse with pure water. Place in an air-ventilated muffle furnace for calcination at 900°C for 6 hours, and then cool down to room temperature for coating.

[0041] Prepare aluminum-alkaline earth composite oxide, every 100 parts of aluminum-alkaline earth composite oxide is made of the following components by weight: 90 parts of aluminum oxide, 5 parts of alkaline earth metal oxide, 5 parts of rare earth element: weigh according to the element ratio in the product Take the raw materials of aluminum carbonate, barium nitrate and cerium nitrate and disperse them in water, in the presence of the organic template cetyltrimethylammonium oxide, hydrothermally treat at 100°C...

Embodiment 3

[0048] Prepare the pretreated FeCrAl metal wire soft carrier: soak 15g of FeCrAl metal wire soft carrier in ethanol solution for 10 minutes, remove it and blow it dry with a hair dryer; then soak it in 3% hydrochloric acid for 5 minutes, take it out and dry it; Rinse with caustic soda solution for 3 minutes, then rinse with pure water. Place it in an air-ventilated muffle furnace for calcination at 1000°C for 4 hours, and then cool down to room temperature for coating.

[0049] Preparation of aluminum-alkaline earth composite oxide, every 100 parts of aluminum-alkaline earth composite oxide is made of the following components by weight: 85 parts of aluminum oxide, 5 parts of alkaline earth metal oxide, 10 parts of rare earth element: according to the element ratio in the product Take aluminum nitrate, strontium nitrate and yttrium carbonate as raw materials and disperse them in water, in the presence of organic template triblock copolymer, hydrothermally treat at 180°C for 12h...

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Abstract

The invention provides a tail gas purification catalyst with a soft metal wire carrier substrate. The tail gas purification catalyst comprises the soft metal wire carrier substrate and a high-performance coating material, wherein the surface of the soft metal wire carrier substrate carrying noble metal is coated with the high-performance coating material; the soft metal wire carrier substrate is a pretreated soft FeCrAl metal wire carrier. A pretreatment process for the soft FeCrAl metal wire carrier comprises the following steps of performing ketone / alcohol washing on the soft metal wire carrier, then performing acid washing, alkali washing and water washing, and calcining the soft metal wire carrier under the conditions of high temperature and rich oxygen in a muffle furnace. Every 100 grams of the high-performance coating material is prepared from 10 to 40 grams of aluminum-alkaline earth composite oxide, 10 to 20 grams of a cerium-zirconium composite oxide, 5 to 15 grams of auxiliaries and the balance being water, and the pH value of the material is 3 to 6. The invention also provides a preparation method for the tail gas purification catalyst with the metal wire soft carrier substrate. According to the catalyst, the soft metal wire carrier with a variable shape and an adjustable geometric volume is introduced, and is coated with the coating material after being pretreated, so that a convenient-to-mount, high-purification-efficiency and low-cost solution is provided for the treatment of tail gas of motor vehicles.

Description

technical field [0001] The invention belongs to the technical field of motor vehicle tail gas emission treatment, and in particular relates to a metal wire soft carrier base tail gas purification catalyst used for car tail gas treatment, and also relates to a preparation method thereof. Background technique [0002] In the last half century, in order to slow down the pollution caused by motor vehicle exhaust emissions, countries around the world have successively formulated a series of exhaust emission standards. my country also began to formulate corresponding national standards in the 1990s, and has gradually approached the requirements of advanced developed countries (Euro 4 and Euro 5) in recent years. [0003] However, the "smog" that has raged from north to south in the past two years has once again reminded people of the seriousness of the air pollution problem. Among them, the main contributor to urban pollution is motor vehicle exhaust. Although my country's new c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/02B01D53/94
Inventor 白向鸽郭昌文乔鹏鹏林孟洁李绮娟
Owner JHM HI TECH NANJING
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