EMISSION GAS CLEANING CATALYST AND OXYGEN OCCLUSION MATERIAL FOR THE SAME
PROBLEM TO BE SOLVED: To provide a means of increasing the heat resistance of a catalyst so as to keep a high performance of emission gas cleaningn even in little amount of catalyst noble metals for a long term to aim the cost reduction. SOLUTION: In the emission gas cleaning catalyst where a cataly...
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| creator | SADAI ASAKO IWAKUNI HIDEJI |
| description | PROBLEM TO BE SOLVED: To provide a means of increasing the heat resistance of a catalyst so as to keep a high performance of emission gas cleaningn even in little amount of catalyst noble metals for a long term to aim the cost reduction. SOLUTION: In the emission gas cleaning catalyst where a catalyst layer 6 containing double oxide containing Ce, Zr, Nd, and catalyst noble metals, and active alumina is formed on a surface of a cell wall 5 of a honeycomb-shaped carrier, CeO2/ZrO2mass ratio of the double oxide is not less than 1.4, and the ratio of Nd2O3/(CeO2+ZrO2+Nd2O3) is not more than 20% by mass. COPYRIGHT: (C)2006,JPO&NCIPI |
| format | Patent |
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SOLUTION: In the emission gas cleaning catalyst where a catalyst layer 6 containing double oxide containing Ce, Zr, Nd, and catalyst noble metals, and active alumina is formed on a surface of a cell wall 5 of a honeycomb-shaped carrier, CeO2/ZrO2mass ratio of the double oxide is not less than 1.4, and the ratio of Nd2O3/(CeO2+ZrO2+Nd2O3) is not more than 20% by mass. 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| subjects | BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS |
| title | EMISSION GAS CLEANING CATALYST AND OXYGEN OCCLUSION MATERIAL FOR THE SAME |
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