Nano-noble metal catalytic filler for three-way catalytic converter carrier and spraying method thereof

Abstract

The invention relates to a nano-noble metal catalytic filler for a three-way catalytic converter carrier and a spraying method thereof. The nano-noble metal catalytic filler is especially suitable for serving as a catalytic filler for an automobile three-way catalytic converter carrier. The filler is prepared from the following raw materials in percentage by weight: 3-8% of palladium nitrate, 1-6% of platinum nitrate, 0.5-2% of rhodium nitrate, 20-40% of nano-titanium dioxide and the balance water, wherein the total percentage is 100%. The spraying method comprises the following steps: (1) disassembling the failed three-way purifier, and cleaning the pollutants in the carrier; (2) blow-drying the moisture in the carrier by using a stainless steel electric blower; (3) repeatedly spraying the nano-noble metal catalytic filler for the three-way catalytic converter carrier on the carrier by adopting a spraying gun; (4) baking the carrier sprayed with the nano-noble metal catalytic filler by using a hot baking gun, and curing; (5) installing the three-way purifier sprayed and cured with the nano-noble metal catalytic filler on the original vehicle; and (6) starting the vehicle after the three-way purifier is installed on the vehicle, and then, detecting.

Description

technical field

[0001] The invention relates to a three-way catalyst carrier nano-precious metal catalytic filler and a spraying method thereof, which is especially suitable for the automobile three-way catalyst carrier as a catalytic filler, and carbon monoxide (CO) and hydrocarbons (HC) in automobile exhaust tail gas ), nitrogen oxides (NOx) and three harmful substances are transformed into environmentally harmless substances through chemical reactions on the surface of the carrier through the catalytic action of the catalyst. Catalytic filler. Background technique

[0002] The tail gas treatment of automobile emissions is mainly composed of three pollutants: carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx). The "three-way" of the three-way catalyst refers to the three pollutants emitted by the car. Hydrocarbons and nitrogen oxides produce photochemical smog under sunlight, which damages the human respiratory system and affects the growth of crops; carb...

Examples

Embodiment 1

[0033] Three-way catalytic converter carrier nano-precious metal catalyst production method:

[0034] 1. Weigh 8g of palladium nitrate, 1g of platinum nitrate, 2g of rhodium nitrate, 35g of nano-titanium dioxide, and 54g of water according to the proportioning ratio;

[0035] 2. Put the above-mentioned palladium nitrate, platinum nitrate, rhodium nitrate, nano-titanium dioxide, and water weighed according to the proportion into the container and stir evenly, pack them in the container separately, seal the seal, and then make the product.

Embodiment 2

[0037] Three-way catalytic converter carrier nano-precious metal catalyst production method:

[0038] 1. Weigh 3g of palladium nitrate, 6g of platinum nitrate, 1.5g of rhodium nitrate, 40g of nano-titanium dioxide, and 49.5g of water according to the ratio;

[0039] 2. Put the above-mentioned palladium nitrate, platinum nitrate, rhodium nitrate, nano-titanium dioxide, and water weighed according to the proportion into the container and stir evenly, pack them in the container separately, seal the seal, and then make the product.

Embodiment 3

[0041] Three-way catalytic converter carrier nano-precious metal catalyst production method:

[0042] 1. Weigh 5g of palladium nitrate, 4g of platinum nitrate, 0.5g of rhodium nitrate, 20g of nano-titanium dioxide, and 70.5g of water according to the ratio;

[0043] 2. Put the above-mentioned palladium nitrate, platinum nitrate, rhodium nitrate, nano-titanium dioxide, and water weighed according to the proportion into the container and stir evenly, pack them in the container separately, seal the seal, and then make the product.

technical field

[0001] The invention relates to a three-way catalyst carrier nano-precious metal catalytic filler and a spraying method thereof, which is especially suitable for the automobile three-way catalyst carrier as a catalytic filler, and carbon monoxide (CO) and hydrocarbons (HC) in automobile exhaust tail gas ), nitrogen oxides (NOx) and three harmful substances are transformed into environmentally harmless substances through chemical reactions on the surface of the carrier through the catalytic action of the catalyst. Catalytic filler. Background technique

[0002] The tail gas treatment of automobile emissions is mainly composed of three pollutants: carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx). The "three-way" of the three-way catalyst refers to the three pollutants emitted by the car. Hydrocarbons and nitrogen oxides produce photochemical smog under sunlight, which damages the human respiratory system and affects the growth of crops; carb...

Examples

Embodiment 1

[0033] Three-way catalytic converter carrier nano-precious metal catalyst production method:

[0034] 1. Weigh 8g of palladium nitrate, 1g of platinum nitrate, 2g of rhodium nitrate, 35g of nano-titanium dioxide, and 54g of water according to the proportioning ratio;

[0035] 2. Put the above-mentioned palladium nitrate, platinum nitrate, rhodium nitrate, nano-titanium dioxide, and water weighed according to the proportion into the container and stir evenly, pack them in the container separately, seal the seal, and then make the product.

Embodiment 2

[0037] Three-way catalytic converter carrier nano-precious metal catalyst production method:

[0038] 1. Weigh 3g of palladium nitrate, 6g of platinum nitrate, 1.5g of rhodium nitrate, 40g of nano-titanium dioxide, and 49.5g of water according to the ratio;

[0039] 2. Put the above-mentioned palladium nitrate, platinum nitrate, rhodium nitrate, nano-titanium dioxide, and water weighed according to the proportion into the container and stir evenly, pack them in the container separately, seal the seal, and then make the product.

Embodiment 3

[0041] Three-way catalytic converter carrier nano-precious metal catalyst production method:

[0042] 1. Weigh 5g of palladium nitrate, 4g of platinum nitrate, 0.5g of rhodium nitrate, 20g of nano-titanium dioxide, and 70.5g of water according to the ratio;

[0043] 2. Put the above-mentioned palladium nitrate, platinum nitrate, rhodium nitrate, nano-titanium dioxide, and water weighed according to the proportion into the container and stir evenly, pack them in the container separately, seal the seal, and then make the product.

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