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Metal oxide catalytic compositions having perovskite crystal structures and containing metals of the platinum group

机译：具有钙钛矿晶体结构并且包含铂族金属的金属氧化物催化组合物

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摘要

Metal oxides of the type A.sup.1.sub.1-x A.sup.2.sub.x !B'.sub. 1-y Me. sub.y !O.sub.3 having perovskite-type crystal structures in whichP PA.sup.1 and A.sup.2 are each one or more mono-, di-, or trivalent metals having ionic radii between about 0.8 and 1.65 Angstroms; PPB' is one or more metals having ionic radii between about 0.4 and 1.4 Angstroms;PPMe is one or more metals of the platinum group (ruthenium, osmium, rhodium, iridium, palladium, and platinum);PPX IS BETWEEN ABOUT 0.01 AND 0. 99; ANDP PY IS BETWEEN ABOUT 0.01 AND 0.20P PARE USEFUL AS CATALYSTS FOR THE OXIDATION OF HYDROCARBONS AND CARBON MONOXIDE AND FOR THE REDUCTION OF NITROGEN OXIDES UNDER CONDITIONS TYPICAL OF THOSE INVOLVED IN THE CLEANUP OF THE EXHAUST GASES OF INTERNAL COMBUSTION ENGINES.

机译：A.sub.sub.1-x类型的金属氧化物A.sup.2.sub.x！B'sub。 1-y我。具有钙钛矿型晶体结构的sub.y.O.sub.3，其中

A.sup.1和A.sup.2分别是一种或多种具有离子性的一价，二价或三价金属半径在0.8到1.65埃之间;

B'是一种或多种离子半径在约0.4到1.4埃之间的金属;

Me是一种或多种铂族金属（钌，，铑，铱，钯，和P）

X在0.01和0之间。99;和

Y在0.01和0.20

之间，用作氧化氢和一氧化碳的催化剂，以及在典型情况下（清除）中所涉及的氧化还原氮氧化物的催化剂内燃发动机的排气。展开▼

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公开/公告号US4049583A

专利类型
公开/公告日1977-09-20

原文格式PDF
申请/专利权人 E. I. DU PONT DE NEMOURS AND COMPANY;
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申请/专利号US19760689385
发明设计人 ALAN LAUDER;
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申请日1976-05-24
分类号B01J21/04;B01J23/10;B01J23/58;B01J23/74;
国家 US
入库时间 2022-08-22 23:29:02

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