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Catalyst for removing carbon monoxide, hydrocarbons and particulate matters in engine

A particulate matter and carbon monoxide technology, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of preventing air pollution, ceramic filter performance degradation, Oxidation and other problems, to achieve excellent oxidation ability, excellent oxidation effect

Inactive Publication Date: 2012-07-25
宜安德株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soot is oxidized at a temperature above about 350°C. Therefore, when the amount of soot captured is too much, it will cause rapid oxidation, and local overheating will occur instantaneously, which will melt the ceramic filter and often cause melting or rupture. phenomenon, so that the carbon smoke is directly discharged to the outside; on the other hand, in the case of using fuel with a high sulfur content, the performance of the ceramic filter drops sharply, and it cannot oxidize carbon monoxide and hydrocarbons well at low temperatures, while carbon monoxide and hydrocarbons discharge, thus failing to achieve the purpose of preventing air pollution

Method used

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  • Catalyst for removing carbon monoxide, hydrocarbons and particulate matters in engine

Examples

Experimental program
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Effect test

Embodiment 1

[0016] In order to prepare the Si-Ti-A-B composite catalyst, 50 g of ethylhexyloxyisopropoxide silicon as Si metal, 50 g of TiCl as Ti metal 4 , 5g of chloroplatinic acid as platinum group metal A, 5g of cesium nitrate as metal B of the 6th period, and 500g of 10% aqueous hydrochloric acid were mixed, and stirred for 3 hours at a temperature of 90°C at a speed of 60rpm to prepare Si- Ti-Pt-Cs composite catalyst; then, in the prepared Si-Ti-Pt-Cs composite catalyst, mix 10g of ethanol as alcohol and 10g of hexamethyldisilane as silane to prepare Si-Ti-Pt-Cs Composite catalyst coating solution; respectively make 2 porosity (porosity) be 30PPI and 3 porosity 50PPI, diameter is 7 inches, the foam body of Fe-Cr-Al material that thickness is 1 inch is impregnated in above-mentioned Si -Ti-Pt-Cs composite catalyst coating solution, dried at 110°C for 6 hours, then fired at 400°C for 2 hours to obtain Si-Ti-Pt-Cs composite for reducing soot at low temperature For the catalyst foam, t...

Embodiment 2

[0018]To prepare the Si-Ti-A-B composite catalyst, 50 g of silicon ethoxylate as Si metal, 50 g of tetraisopropoxytitanium as Ti metal, 5 g of ruthenium chloride as platinum group metal A, 5 g of ruthenium chloride as the 6th cycle The barium nitrate of metal B and the 10% sulfuric acid aqueous solution of 500g are mixed, stir 3 hours with the speed of 60rpm at the temperature of 90 ℃, thereby prepare Si-Ti-Ru-Ba composite catalyst; Then, to prepared Si-Ti -In the Ru-Ba composite catalyst, mix 10g of isopropanol as alcohol and 10g of phenylmethylsilane as silane to prepare Si-Ti-Ru-Ba composite catalyst coating solution; make 2 porosities of 30PPI and 3 respectively A stainless steel foam body with a porosity of 50PPI, a diameter of 7 inches, and a thickness of 1 inch is impregnated with the above-mentioned Si-Ti-Ru-Ba composite catalyst coating solution, dried at a temperature of 110° C. for 6 hours, and then dried at 400° C. ℃ for 2 hours to obtain the Si-Ti-Ru-Ba composite ...

Embodiment 3

[0020] To prepare the Si-Ti-A-B composite catalyst, 50 g of silicon ethoxylate as Si metal, 50 g of tetraisopropoxytitanium as Ti metal, 5 g of iridium chloride as platinum group metal A, 5 g as cycle 6 Ammonium tungstate of metal B and 500g of 10% nitric acid aqueous solution were mixed, stirred at a speed of 60rpm at a temperature of 90°C for 3 hours to prepare a Si-Ti-Ir-W composite catalyst; then, to the prepared Si- Mix 10g propanol as alcohol and 10g methyltrimethoxysilane as silane in the Ti-Ir-W composite catalyst to prepare Si-Ti-Ir-W composite catalyst coating solution; make 2 porosities of 30PPI and Three stainless steel foams with a porosity of 50PPI, a diameter of 7 inches, and a thickness of 1 inch were impregnated in the above-mentioned Si-Ti-Ir-W composite catalyst coating solution, dried at a temperature of 110°C for 6 hours, and then placed in a Fire at a temperature of 400°C for 2 hours to obtain a Si-Ti-Ir-W composite catalyst foam for reducing soot at low ...

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Abstract

The invention provides a catalyst for removing carbon monoxide, hydrocarbons and particulate matters in an engine. The catalyst oxidizes carbon monoxide, hydrocarbons, particulate matters and carbon smoke in exhaust gas of the engine using high-sulfur fuel into carbon dioxide at low temperature for removal. According to the invention, a Si-Ti-A-B composite catalyst, which is composed of more than one platinum metal A selected from platinum, ruthenium, palladium and iridium as well as more than one sixth-period element selected from cesium, barium, tungsten and rhenium, is prepared; and the Si-Ti-A-B composite catalyst has excellent oxidizing capability to carbon monoxide, hydrocarbons and particulate matters at low temperature.

Description

[0001] This application is an application for an invention patent with the application date of August 9, 2007, the application number 200710140335.3, and the title "Catalyst for removing carbon monoxide, hydrocarbons and particulate matter in engines using high-sulfur fuel and its preparation method" Divisional application. technical field [0002] The present invention relates to a new composite catalyst and its preparation method, in particular to the removal of carbon monoxide and hydrocarbons into carbon dioxide and water by oxidation under low temperature conditions, and the oxidation of particulate matter (Particulate Matter, hereinafter referred to as PM) and soot into carbon dioxide A composite catalyst for treating diesel engine exhaust gas for removal and a preparation method thereof. Background technique [0003] Conventionally, ceramic filters are impregnated with platinum after wash coating alumina, which is a refractory inorganic compound, to trap soot. Soot i...

Claims

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Application Information

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IPC IPC(8): B01J23/58B01J23/652B01J23/656B01D53/94B01D53/72B01D53/62
CPCY02A50/20
Inventor 金敏镕金文璨
Owner 宜安德株式会社
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