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JPS5712820A - Monolithic type catalyst structure for cleaning automobile exhaust - Google Patents

Monolithic type catalyst structure for cleaning automobile exhaust

Info

Publication number
JPS5712820A
JPS5712820A JP8550880A JP8550880A JPS5712820A JP S5712820 A JPS5712820 A JP S5712820A JP 8550880 A JP8550880 A JP 8550880A JP 8550880 A JP8550880 A JP 8550880A JP S5712820 A JPS5712820 A JP S5712820A
Authority
JP
Japan
Prior art keywords
exhaust
support
catalyst structure
densely
catalyst
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8550880A
Other languages
Japanese (ja)
Other versions
JPS634003B2 (en
Inventor
Yoshihiro Suzuki
Hiroo Kinoshita
Kazuo Onoe
Masayasu Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KIYATARAA KOGYO KK
Toyota Motor Corp
Original Assignee
KIYATARAA KOGYO KK
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KIYATARAA KOGYO KK, Toyota Motor Corp filed Critical KIYATARAA KOGYO KK
Priority to JP8550880A priority Critical patent/JPS5712820A/en
Publication of JPS5712820A publication Critical patent/JPS5712820A/en
Publication of JPS634003B2 publication Critical patent/JPS634003B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Catalysts (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

PURPOSE: To use effectively a monolithic type catalyst structure for cleaning automobile exhaust by continuously changing the Pt/Rh ratio of the catalyst from the inlet side of the exhaust to the discharge side.
CONSTITUTION: The Pt/Rh ratio of a monolithic type Pt-Rh ternary catalyst structure for cleaning automobile exhaust is continuously changed by adhering Rh high- densely and Pt low-densely on the exhaust inlet side of the honeycomb-structure support 3A of the catalyst structure and also adhering Rh low-densely and Pt high- densely on the discharge side of the catalyst support 3A. The honeycomb structure support 3A is set in a Pt-impregnating tank 4, an operation involving pushing up a Pt-containing liquid L up to the tank 4 by compressed air and soon forcing it down to a supplying portion 5 by an ejector is repeated until a desired adhesion density of Pt is obtained, and then support 3A is taken out and dried. Then, the exhaust inlet side (a) and the discharge side (b) of the support 3A is reversed and then subjected to the same operation using Rh-containing liquid instead of Pt-containing liquid. Thus, a catalyst structure having Pt/Rh ratio continuously changing in the flow direction of the exhaust can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP8550880A 1980-06-24 1980-06-24 Monolithic type catalyst structure for cleaning automobile exhaust Granted JPS5712820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8550880A JPS5712820A (en) 1980-06-24 1980-06-24 Monolithic type catalyst structure for cleaning automobile exhaust

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8550880A JPS5712820A (en) 1980-06-24 1980-06-24 Monolithic type catalyst structure for cleaning automobile exhaust

Publications (2)

Publication Number Publication Date
JPS5712820A true JPS5712820A (en) 1982-01-22
JPS634003B2 JPS634003B2 (en) 1988-01-27

Family

ID=13860866

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8550880A Granted JPS5712820A (en) 1980-06-24 1980-06-24 Monolithic type catalyst structure for cleaning automobile exhaust

Country Status (1)

Country Link
JP (1) JPS5712820A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154382A (en) * 1991-12-09 1993-06-22 Mazda Motor Corp Catalyst for purifying exhaust gas from engine
JP2007521953A (en) * 2004-02-11 2007-08-09 ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト Exhaust gas purification catalyst having a noble metal concentration changing in the axial direction, and method for producing the catalyst
DE102011100017A1 (en) * 2011-04-29 2012-10-31 Süd-Chemie AG Process for the preparation of zoned catalysts
GB2558186A (en) * 2015-10-23 2018-07-11 Johnson Matthey Plc Catalysed monolith substrate for a diesel engine
WO2019163403A1 (en) * 2018-02-21 2019-08-29 株式会社キャタラー Exhaust gas purification catalyst device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS535940U (en) * 1976-07-01 1978-01-19
JPS5471225A (en) * 1977-11-17 1979-06-07 Nissan Motor Co Ltd Catalyzer converter for automobile
JPS55130739U (en) * 1979-03-07 1980-09-16
JPS55130739A (en) * 1978-07-14 1980-10-09 Howa Kasei:Kk Preparation of fibrous product backed up by synthetic resin sheet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS535940U (en) * 1976-07-01 1978-01-19
JPS5471225A (en) * 1977-11-17 1979-06-07 Nissan Motor Co Ltd Catalyzer converter for automobile
JPS55130739A (en) * 1978-07-14 1980-10-09 Howa Kasei:Kk Preparation of fibrous product backed up by synthetic resin sheet
JPS55130739U (en) * 1979-03-07 1980-09-16

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154382A (en) * 1991-12-09 1993-06-22 Mazda Motor Corp Catalyst for purifying exhaust gas from engine
JP2007521953A (en) * 2004-02-11 2007-08-09 ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト Exhaust gas purification catalyst having a noble metal concentration changing in the axial direction, and method for producing the catalyst
DE102011100017A1 (en) * 2011-04-29 2012-10-31 Süd-Chemie AG Process for the preparation of zoned catalysts
GB2558186A (en) * 2015-10-23 2018-07-11 Johnson Matthey Plc Catalysed monolith substrate for a diesel engine
WO2019163403A1 (en) * 2018-02-21 2019-08-29 株式会社キャタラー Exhaust gas purification catalyst device
JPWO2019163403A1 (en) * 2018-02-21 2021-01-14 株式会社キャタラー Exhaust gas purification catalyst device

Also Published As

Publication number Publication date
JPS634003B2 (en) 1988-01-27

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