CATALYST FOR EXHAUST GAS PURIFICATION

• Main Author: IMOTO RUI
• Format: Patent
• Language: English; Japanese
• Published: 18.10.2018
• 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

PROBLEM TO BE SOLVED: To provide a catalyst for exhaust gas purification that is excellent in heat resistance.SOLUTION: Provided is a catalyst for exhaust gas purification containing a carrier that contains a complex oxide formed from AlO, ZrO, LaOand optionally YO, and a noble metal supported on the carrier, and in which the contents, in mass%, of AlO, ZrO, LaOand YOwith respect to the whole complex oxides satisfy the following: 1.5≤ZrO≤13 0.8≤LaO≤4.2 0≤YO≤2.2 AlO: balance.SELECTED DRAWING: Figure 4 【課題】耐熱性に優れる排ガス浄化用触媒を提供する。【解決手段】Ａｌ２Ｏ３と、ＺｒＯ２、Ｌａ２Ｏ３及び場合によりＹ２Ｏ３とから形成される複合酸化物を含有する担体、及び該担体に担持された貴金属を含有し、Ａｌ２Ｏ３、ＺｒＯ２、Ｌａ２Ｏ３及びＹ２Ｏ３の含有量が、複合酸化物全体に対して、質量％で以下：１．５≦ＺｒＯ２≦１３０．８≦Ｌａ２Ｏ３≦４．２０≦Ｙ２Ｏ３≦２．２Ａｌ２Ｏ３：残部を満たす排ガス浄化用触媒。【選択図】図４