FR2445173A1 - Catalyst contg. platinum and palladium based layers - used in oxidn. of ammonia to form nitric oxide - Google Patents

Catalyst contg. platinum and palladium based layers - used in oxidn. of ammonia to form nitric oxide

Info

Publication number
FR2445173A1
FR2445173A1 FR7836480A FR7836480A FR2445173A1 FR 2445173 A1 FR2445173 A1 FR 2445173A1 FR 7836480 A FR7836480 A FR 7836480A FR 7836480 A FR7836480 A FR 7836480A FR 2445173 A1 FR2445173 A1 FR 2445173A1
Authority
FR
France
Prior art keywords
oxidn
ammonia
based catalyst
catalyst
nitric oxide
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
FR7836480A
Other languages
French (fr)
Other versions
FR2445173B1 (en
Inventor
Tadeusz Retmaniak
Mieczyslaw Marek
Pawel Polak
Andrzej Brzeski
Janusz Nyc
Boleslaw Skowronski
Kazimierz Kozlowski
Antoni Springwald
Henryka Weglarska-Zagorna
Eugeniusz Blasiak
Jerzy Studencki
Andrzej Skalski
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.)
Instytut Nawozow Sztucznych
Original Assignee
Instytut Nawozow Sztucznych
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 Instytut Nawozow Sztucznych filed Critical Instytut Nawozow Sztucznych
Priority to FR7836480A priority Critical patent/FR2445173A1/en
Priority to BE192579A priority patent/BE873097A/en
Publication of FR2445173A1 publication Critical patent/FR2445173A1/en
Application granted granted Critical
Publication of FR2445173B1 publication Critical patent/FR2445173B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/58—Fabrics or filaments
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/24—Nitric oxide (NO)
    • C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
    • C01B21/265—Preparation by catalytic or non-catalytic oxidation of ammonia characterised by the catalyst

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)

Abstract

Layered catalyst material, based on precious metals, is used in the oxidn. of ammonia to form nitric oxide, partic. during the prodn. of nitric acid. In the first part of the catalyst material to be in contact with the flow of reaction gases, the principal component is Pt. In the second part the principal component is Pd. The amt. of Pd-based catalyst is determined so that the unit charge, calculated for the Pt-based catalyst, omitting the Pd-based catalyst, and expressed in tonnes of ammonia per 24hr. per m2 of active geometric surface, is >0.25 (1+p) where p is the pressure in the oxidn. reactor expressed in atmos absolute. Compared with previous Pt-based catalyst giving the same yield for the oxidn. reaction, the material contains a reduced amt. of Pt-based catalyst, and the irrecoverable loss of Pt is also reduced.
FR7836480A 1978-12-27 1978-12-27 Catalyst contg. platinum and palladium based layers - used in oxidn. of ammonia to form nitric oxide Granted FR2445173A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7836480A FR2445173A1 (en) 1978-12-27 1978-12-27 Catalyst contg. platinum and palladium based layers - used in oxidn. of ammonia to form nitric oxide
BE192579A BE873097A (en) 1978-12-27 1978-12-27 STRATIFIED PRECIOUS METAL CATALYST CHARGE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7836480A FR2445173A1 (en) 1978-12-27 1978-12-27 Catalyst contg. platinum and palladium based layers - used in oxidn. of ammonia to form nitric oxide

Publications (2)

Publication Number Publication Date
FR2445173A1 true FR2445173A1 (en) 1980-07-25
FR2445173B1 FR2445173B1 (en) 1983-07-22

Family

ID=9216579

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7836480A Granted FR2445173A1 (en) 1978-12-27 1978-12-27 Catalyst contg. platinum and palladium based layers - used in oxidn. of ammonia to form nitric oxide

Country Status (2)

Country Link
BE (1) BE873097A (en)
FR (1) FR2445173A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259966A1 (en) * 1986-08-06 1988-03-16 Engelhard Corporation Platinum coated filaments of platinum and rhodium; method of preparation and use in ammonia oxidation
US4863893A (en) * 1986-08-06 1989-09-05 Engelhard Corporation Low temperature light off ammonia oxidation
WO1992002300A1 (en) * 1990-07-31 1992-02-20 Alan Edward Heywood Improvements in or relating to self-gettering catalysts
US5108730A (en) * 1986-08-06 1992-04-28 Engelhard Corporation Low temperatue light off ammonia oxidation
WO1994015711A1 (en) * 1993-01-06 1994-07-21 Pgp Industries, Inc. Catalyst packs
US5656567A (en) * 1990-07-31 1997-08-12 Pgp Industries, Inc. Self-gettering catalysts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148525A1 (en) * 1971-08-09 1973-03-23 Johnson Matthey Co Ltd
FR2178125A1 (en) * 1972-03-30 1973-11-09 Engelhard Min & Chem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148525A1 (en) * 1971-08-09 1973-03-23 Johnson Matthey Co Ltd
FR2178125A1 (en) * 1972-03-30 1973-11-09 Engelhard Min & Chem

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259966A1 (en) * 1986-08-06 1988-03-16 Engelhard Corporation Platinum coated filaments of platinum and rhodium; method of preparation and use in ammonia oxidation
US4863893A (en) * 1986-08-06 1989-09-05 Engelhard Corporation Low temperature light off ammonia oxidation
US5108730A (en) * 1986-08-06 1992-04-28 Engelhard Corporation Low temperatue light off ammonia oxidation
WO1992002300A1 (en) * 1990-07-31 1992-02-20 Alan Edward Heywood Improvements in or relating to self-gettering catalysts
AU661970B2 (en) * 1990-07-31 1995-08-17 Pgp Industries, Inc. Self-gettering catalysts
US5656567A (en) * 1990-07-31 1997-08-12 Pgp Industries, Inc. Self-gettering catalysts
WO1994015711A1 (en) * 1993-01-06 1994-07-21 Pgp Industries, Inc. Catalyst packs

Also Published As

Publication number Publication date
BE873097A (en) 1979-04-17
FR2445173B1 (en) 1983-07-22

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Legal Events

Date Code Title Description
ST Notification of lapse