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1. CA2781794 - COMPLEX OXIDE, METHOD FOR PRODUCING SAME AND EXHAUST GAS PURIFYING CATALYST

官庁 カナダ
出願番号 2781794
出願日 25.11.2010
公開番号 2781794
公開日 03.06.2011
特許番号
特許付与日 20.02.2018
公報種別 C
IPC
B01J 23/10
B処理操作;運輸
01物理的または化学的方法または装置一般
J化学的または物理的方法,例.触媒またはコロイド化学;それらの関連装置
23グループB01J21/00に分類されない,金属または金属酸化物または水酸化物からなる触媒
10希土類に関するもの
B01J 33/00
B処理操作;運輸
01物理的または化学的方法または装置一般
J化学的または物理的方法,例.触媒またはコロイド化学;それらの関連装置
33触媒の保護,例.被覆によるもの
F01N 3/10
F機械工学;照明;加熱;武器;爆破
01機械または機関一般;機関設備一般;蒸気機関
N機械または機関のためのガス流消音器または排気装置一般;内燃機関用ガス流消音器または排気装置
3排気の清浄,無害化または他の処理をする手段をもつ排気もしくは消音装置
08無害にするためのもの
10排気の有害成分を熱または触媒で変換することによるもの
CPC
B01D 53/945
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
9445Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
945characterised by a specific catalyst
B01D 2255/2065
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
20Metals or compounds thereof
206Rare earth metals
2065Cerium
B01D 2255/30
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
30Silica
B01D 2255/40
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
40Mixed oxides
B01D 2255/908
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
90Physical characteristics of catalysts
908O2-storage component incorporated in the catalyst
B01D 2255/9207
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
90Physical characteristics of catalysts
92Dimensions
9207Specific surface
出願人 ANAN KASEI CO., LTD.
優先権情報 2009-267893 25.11.2009 JP
発明の名称
(EN) COMPLEX OXIDE, METHOD FOR PRODUCING SAME AND EXHAUST GAS PURIFYING CATALYST
(FR) OXYDE COMPLEXE, SON PROCEDE DE PRODUCTION ET CATALYSEUR DE PURIFICATION DE GAZ D'ECHAPPEMENT
要約
(EN)

Disclosed are a silicon-containing cerium composite
oxide which is capable of maintaining a large specific
surface area even used in a high temperature environment,
and which has excellent heat resistance and reducibility,
as well as a method for producing the composite oxide and
a catalyst for exhaust gas purification employing the
composite oxide. The composite oxide contains 2 to 2 0 mas s%
silicon in terms of S102, has properties of exhibiting a
specific surface area of not less than 40 m2/g as measured
by the BET method after calcination at 1000 °C for 5 hours,
and a reducibility of not lower than 30 % as calculated
from measurement of temperature-programmed reduction from
50 00 to 900 °C after calcination at 1000 00 for 5 hours,
and is suitable for a co-catalyst for a catalyst for exhaust
gas purification.