WO1999025667A3 - Procede de transformation de l'ammoniac - Google Patents

Procede de transformation de l'ammoniac Download PDF

Info

Publication number
WO1999025667A3
WO1999025667A3 PCT/RU1998/000380 RU9800380W WO9925667A3 WO 1999025667 A3 WO1999025667 A3 WO 1999025667A3 RU 9800380 W RU9800380 W RU 9800380W WO 9925667 A3 WO9925667 A3 WO 9925667A3
Authority
WO
WIPO (PCT)
Prior art keywords
composition containing
stage
ammonia
fe2o3
al2o3
Prior art date
Application number
PCT/RU1998/000380
Other languages
English (en)
Russian (ru)
Other versions
WO1999025667A2 (fr
Inventor
Valery Ivanovich Chernyshev
Evgeny Abramovich Brushtein
Original Assignee
Valery Ivanovich Chernyshev
Evgeny Abramovich Brushtein
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 Valery Ivanovich Chernyshev, Evgeny Abramovich Brushtein filed Critical Valery Ivanovich Chernyshev
Publication of WO1999025667A2 publication Critical patent/WO1999025667A2/fr
Publication of WO1999025667A3 publication Critical patent/WO1999025667A3/fr

Links

Classifications

    • 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
    • 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
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • 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
    • C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
    • C01B21/14—Hydroxylamine; Salts thereof
    • C01B21/1409—Preparation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/04—Preparation of ammonia by synthesis in the gas phase
    • C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
    • C01C1/0411—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the catalyst
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Cette invention se rapporte aux procédés de transformation de l'ammoniac dans des systèmes catalytiques à deux étages, et peut être utilisée dans la production d'acides nitrique et cyanhydrique et d'hydroxylaminesulfate. Cette invention concerne essentiellement un procédé de transformation de l'ammoniac qui consiste à faire passer un mélange gazeux d'ammoniac et d'un gaz contenant de l'oxygène à travers un système catalytique à deux étages. Dans le sens de progression du mélange gazeux, le premier étage consiste en une couche de matrices platinoïdes, tandis que le second étage consiste en une couche d'un catalyseur non platinoïde, oxyde et alvéolaire. Dans les flux de mélange gazeux circulant dans les canaux alvéolaires du catalyseur du second étage, on maintient un rapport entre la vitesse de fonctionnement moyenne et la vitesse du son dans ces conditions, qui varie de 4,8 x 10-4 à 0,024. Le premier étage permet de transformer de 86 à 97 % de la quantité totale d'ammoniac à traiter. On utilise en qualité de catalyseurs dans le premier et le second étages des compositions de catalyseurs choisies dans les séries suivantes. Pour le premier étage: une composition contenant 92,5 % de Pt, 4 % de Pd et 3,5 % de Rh; une composition contenant 81 % de Pt, 15 % de Pd, 3,5 % de Rh et 0,5 % de Ru; une composition contenant 92,5 % de Pt et 7,5 % de Rh; une composition contenant 95 % de Pt et 5 % de Rh; ou encore, un catalyseur et un sorbant de platinoïdes selon une composition contenant 95 % de Pd et 5 % de Ni. Pour le second étage: une composition contenant 92 % de Fe¿2?O3 et 8 % de Cr2O3; une composition contenant 89,5 % de Fe2O3, 5 % de ZrO2, 5 % de MgO et 0,5 % de ZrBaO; une composition contenant 79 % de Fe2O3, 20 % de Al2O3 et 1 % de MgO; une composition contenant 79,7 % de Fe2O3, 20 % de Al2O3 et 0,3 % de V2O5; ou encore, une pérovskite contenant 90 % de (Cao0,1Lao0,9MnO3), 8 % de Al2O3 et 2 % de SiO2.
PCT/RU1998/000380 1997-11-14 1998-11-13 Procede de transformation de l'ammoniac WO1999025667A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU97118457A RU2119889C1 (ru) 1997-11-14 1997-11-14 Способ конверсии аммиака
RU97118457 1997-11-14

Publications (2)

Publication Number Publication Date
WO1999025667A2 WO1999025667A2 (fr) 1999-05-27
WO1999025667A3 true WO1999025667A3 (fr) 1999-07-15

Family

ID=20198777

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU1998/000380 WO1999025667A2 (fr) 1997-11-14 1998-11-13 Procede de transformation de l'ammoniac

Country Status (2)

Country Link
RU (1) RU2119889C1 (fr)
WO (1) WO1999025667A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2145935C1 (ru) 1999-08-11 2000-02-27 Институт катализа им.Г.К.Борескова СО РАН Способ конверсии аммиака

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU300057A1 (fr) * 1969-01-06 1973-04-17
SU727209A1 (ru) * 1977-08-16 1980-04-15 Харьковский политехнический институт им. В.И.Ленина Катализатор второй ступени дл окислени аммиака
US4812300A (en) * 1987-07-13 1989-03-14 Sri-International Selective perovskite catalysts to oxidize ammonia to nitric oxide
RU1102183C (ru) * 1982-07-22 1994-12-30 Государственный научно-исследовательский и проектный институт азотной промышленности и продуктов органического синтеза Способ каталитического окисления аммиака
SU771958A1 (ru) * 1975-12-19 1995-05-27 Н.В. Добровольская Катализатор второй ступени для окисления аммиака

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU300057A1 (fr) * 1969-01-06 1973-04-17
SU771958A1 (ru) * 1975-12-19 1995-05-27 Н.В. Добровольская Катализатор второй ступени для окисления аммиака
SU727209A1 (ru) * 1977-08-16 1980-04-15 Харьковский политехнический институт им. В.И.Ленина Катализатор второй ступени дл окислени аммиака
RU1102183C (ru) * 1982-07-22 1994-12-30 Государственный научно-исследовательский и проектный институт азотной промышленности и продуктов органического синтеза Способ каталитического окисления аммиака
US4812300A (en) * 1987-07-13 1989-03-14 Sri-International Selective perovskite catalysts to oxidize ammonia to nitric oxide

Also Published As

Publication number Publication date
WO1999025667A2 (fr) 1999-05-27
RU2119889C1 (ru) 1998-10-10

Similar Documents

Publication Publication Date Title
JP4819235B2 (ja) 水素含有気体混合物中で水を用いての一酸化炭素の触媒的変換方法
EP0657204B1 (fr) Catalyseur pour la purification de gaz d'échappement
US7253137B2 (en) PROX catalyst for oxidizing carbon monoxide
CA1335279C (fr) Catalyseur pour purifier les gaz d'echappement de moteurs a combustion interne tout en reduisant les emissions de sulfure d'hydrogene produit par ledit catalyseur et methode d'utilisation dudit catalyseur
US7700519B2 (en) Catalyst for decomposing nitrous oxide and method for performing processes comprising formation of nitrous oxide
AU1843795A (en) Layered catalyst composite
EP0152052A3 (en) Process for producing monolithic catalyst for purifying exhaust gases
WO2004058633A3 (fr) Preparations catalysantes de ruthenium-cobalt exemptes de platine destinees a la production d'hydrogene
WO2004058395A3 (fr) Catalyseurs au platine-ruthenium pour la production d'hydrogene
CA2138133A1 (fr) Methode pour eliminer les oxydes diazote dans les gaz d'echappement
JPH07196301A (ja) 炭化水素の接触部分酸化方法
JP2773428B2 (ja) 排気ガス浄化方法
AU2003206981A1 (en) Novel catalyst for the reduction of no to n2 with hydrogen under nox oxidation conditions
US6489264B1 (en) Ammonia oxidation catalyst
US4257920A (en) Catalyst containing a noble metal of the VIIIth group, copper oxide, zinc oxide and a rare earth metal, its manufacture and use in the conversion of carbon monoxide
US3825654A (en) Process for reducing the content of nitrogen oxides in the exhaust gases from internal combustion engines
KR960700812A (ko) 은-함유 알루미나 담지촉매 및 순수하거나 기체혼합물로 존재하는 일산화이질소의 촉매적 분해방법(aluminium oxide catalyst containing silver, and method of decomposing nitrous oxide)
UA66814C2 (uk) Спосіб виробництва вінілацетату в присутності каталізатора, що містить паладій, золото і третій метал
BR9813466A (pt) Processo para a produção de acetato de vinila por reação de etileno, oxigênio e ácido acético como reagentes, em presença de um catalisador
CN100594058C (zh) 奥斯特瓦尔德法生产中n2o分解用催化剂
US20190232220A1 (en) SYSTEMS, METHODS AND MATERIALS FOR NOx DECOMPOSITION WITH METAL OXIDE MATERIALS
TW429163B (en) Oxidazing catalyst system and an oxidation process by using the same
WO1999025667A3 (fr) Procede de transformation de l'ammoniac
ATE74109T1 (de) Katalysatoren zum abtrennen von sauerstoff aus luft durch absorption.
WO2000013789A8 (fr) Catalyseur ceramique de decomposition selective de n2o et procede permettant de le produire

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): UA US UZ

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

AK Designated states

Kind code of ref document: A3

Designated state(s): UA US UZ

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase