RO81263B - Compozitie catalitica pentru obtinerea acidului acrilic sau metacrilic - Google Patents

Compozitie catalitica pentru obtinerea acidului acrilic sau metacrilic

Info

Publication number
RO81263B
RO81263B RO91875A RO9187577A RO81263B RO 81263 B RO81263 B RO 81263B RO 91875 A RO91875 A RO 91875A RO 9187577 A RO9187577 A RO 9187577A RO 81263 B RO81263 B RO 81263B
Authority
RO
Romania
Prior art keywords
elements
catalytic composition
methacrylic acid
preparing acrylic
mixtures
Prior art date
Application number
RO91875A
Other languages
English (en)
Other versions
RO81263A (ro
Inventor
James Ferguson White
Wilfris Garside Shaw
Michael Duane Applequist
Original Assignee
The Standard Oil Company
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
Priority claimed from US05/733,735 external-priority patent/US4085065A/en
Priority claimed from US05/733,738 external-priority patent/US4075124A/en
Priority claimed from US05/733,737 external-priority patent/US4075123A/en
Application filed by The Standard Oil Company filed Critical The Standard Oil Company
Publication of RO81263A publication Critical patent/RO81263A/ro
Publication of RO81263B publication Critical patent/RO81263B/ro

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85Chromium, molybdenum or tungsten
    • B01J23/88Molybdenum
    • B01J23/887Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8873Zinc, cadmium or mercury
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002Mixed oxides other than spinels, e.g. perovskite
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24Chromium, molybdenum or tungsten
    • B01J23/28Molybdenum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85Chromium, molybdenum or tungsten
    • B01J23/88Molybdenum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85Chromium, molybdenum or tungsten
    • B01J23/88Molybdenum
    • B01J23/887Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8871Rare earth metals or actinides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85Chromium, molybdenum or tungsten
    • B01J23/88Molybdenum
    • B01J23/887Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8872Alkali or alkaline earth metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85Chromium, molybdenum or tungsten
    • B01J23/88Molybdenum
    • B01J23/887Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8876Arsenic, antimony or bismuth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85Chromium, molybdenum or tungsten
    • B01J23/88Molybdenum
    • B01J23/887Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8877Vanadium, tantalum, niobium or polonium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/889Manganese, technetium or rhenium
    • B01J23/8898Manganese, technetium or rhenium containing also molybdenum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8933Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8933Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/8993Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with chromium, molybdenum or tungsten
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14Phosphorus; Compounds thereof
    • B01J27/186Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J27/188Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum, tungsten or polonium
    • B01J27/19Molybdenum
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/25Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
    • C07C51/252Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00Constitutive chemical elements of heterogeneous catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Inventia se refera la o compozitie catalitica utilizata pentru prepararea acizilor nesaturati din aldehide nesaturate. Obtinerea acidului acrilic se face prin oxidarea metacroleinei sau acroleinei în prezenta oxigenului molecular în faza de vapori în prezenta catalizatorilor componenti grupati în grupurile de la I la III:(I) elementeale pamînturilor rare sau amestecuri ale acestora si de preferinta cel putin unul unul din elemente ale pamînturilor rare sau ale pamînturilor rare sau amestecuri ale acestora si de preferintacel putin unul din elementele Ag, Tl, Th, Rd, Pd, Ru, Pt, Cd, Al, Au, Cu, metale alcalino-teroase, Cl, NH4, sau (II) cel putin unul din elementele selectate din rîndul U, Ti, Nb, Re, Pb, Zn, si Ga si de preferinta cel putin unul din Cu, un element de pamînt rar, NH4, Cl, Ni, Al, si Ge (III) cel putin unul din elementele alese din grupa constînd din Ag, Rh, Ru, si Au si de preferinta Cd, Pt, Pb, Al, Ge, Ni, metal alcalino-teros, NH4 si Cl.
RO91875A 1976-10-19 1977-10-18 Compozitie catalitica pentru obtinerea acidului acrilic sau metacrilic RO81263B (ro)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US05/733,735 US4085065A (en) 1976-10-19 1976-10-19 Process for the preparation of unsaturated acids from unsaturated aldehydes
US05/733,738 US4075124A (en) 1976-10-19 1976-10-19 Process for the preparation of unsaturated acids from unsaturated aldehydes
US05/733,737 US4075123A (en) 1976-10-19 1976-10-19 Process for the preparation of unsaturated acids from unsaturated aldehydes

Publications (2)

Publication Number Publication Date
RO81263A RO81263A (ro) 1983-02-15
RO81263B true RO81263B (ro) 1983-02-28

Family

ID=27419180

Family Applications (1)

Application Number Title Priority Date Filing Date
RO91875A RO81263B (ro) 1976-10-19 1977-10-18 Compozitie catalitica pentru obtinerea acidului acrilic sau metacrilic

Country Status (15)

Country Link
JP (1) JPS5351194A (ro)
BG (2) BG40648A3 (ro)
BR (1) BR7706924A (ro)
CA (1) CA1099250A (ro)
DD (1) DD133431A5 (ro)
DE (2) DE2760323C2 (ro)
ES (5) ES472476A1 (ro)
FR (1) FR2371229A1 (ro)
GB (1) GB1575334A (ro)
IN (1) IN147123B (ro)
IT (1) IT1088096B (ro)
NL (1) NL7711377A (ro)
NO (6) NO773568L (ro)
PT (1) PT67146B (ro)
RO (1) RO81263B (ro)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5811416B2 (ja) * 1978-12-13 1983-03-02 日本化薬株式会社 メタクリル酸の製造法
FR2521565B1 (fr) * 1982-02-17 1985-07-05 Dior Sa Parfums Christian Melange pulverulent de constituants lipidiques et de constituants hydrophobes, procede pour le preparer, phases lamellaires lipidiques hydratees et procede de fabrication, compositions pharmaceutiques ou cosmetiques comportant des phases lamellaires lipidiques hydratees
JPH0791212B2 (ja) * 1988-07-11 1995-10-04 三菱レイヨン株式会社 メタクリル酸の製造法
US10882801B2 (en) * 2016-01-04 2021-01-05 Saudi Arabian Oil Company Methods for gas phase oxidative desulphurization of hydrocarbons using CuZnAl catalysts promoted with group VIB metal oxides

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5529061B2 (ro) * 1973-08-16 1980-07-31

Also Published As

Publication number Publication date
RO81263A (ro) 1983-02-15
GB1575334A (en) 1980-09-17
NO783837L (no) 1978-04-20
BG40648A3 (en) 1986-01-15
ES472472A1 (es) 1979-04-01
NO773568L (no) 1978-04-20
NO783835L (no) 1978-04-20
FR2371229A1 (fr) 1978-06-16
DD133431A5 (de) 1979-01-03
FR2371229B1 (ro) 1984-03-09
NO783836L (no) 1978-04-20
DE2760323C2 (ro) 1989-07-20
BG40476A3 (en) 1986-12-15
PT67146B (en) 1979-03-19
DE2746135A1 (de) 1978-04-27
JPS5351194A (en) 1978-05-10
ES472475A1 (es) 1979-04-01
IT1088096B (it) 1985-06-04
CA1099250A (en) 1981-04-14
PT67146A (en) 1977-11-01
BR7706924A (pt) 1978-06-27
NO783834L (no) 1978-04-20
JPS6211618B2 (ro) 1987-03-13
ES472474A1 (es) 1979-04-01
DE2746135C2 (de) 1987-02-26
NO783833L (no) 1978-04-20
NL7711377A (nl) 1978-04-21
ES472476A1 (es) 1979-04-16
IN147123B (ro) 1979-11-17
ES472473A1 (es) 1979-04-01

Similar Documents

Publication Publication Date Title
ES2063920T3 (es) Procedimiento de preparacion de catalizadores de oxidacion a base de oxidos metalicos que contienen hierro, antimonio y fosforo.
JPS552619A (en) Preparation of methacrylic acid and catalyst
KR940013599A (ko) 신규한 변형 마그네슘 옥사이드 촉매 조성물 및 그의 제조방법
US4985592A (en) Process for the preparation of unsaturated carboxylic acids
JPS5373488A (en) Olefin oxidation catalyst
ES450761A1 (es) Mejoras introducidas en el procedimiento para preparar acidoacrilico y acido metacrilico.
JPS5579341A (en) Preparation of methacrylic acid and catalyst
GB1525577A (en) Oxidation catalyst
JPS56166140A (en) Preparation of methacrolein
JPS5319188A (en) Olefin oxidation catalyst
RO81263B (ro) Compozitie catalitica pentru obtinerea acidului acrilic sau metacrilic
JPS5498717A (en) Preparation of unsaturated carboxylic acid
GB2033775A (en) Catalysts and process for the production of methacrolein catalysts
BG31642A3 (en) Catalyist composition
GB1391859A (en) Catalysts for the conversion of unsaturated aldehydes to acids
ES429309A1 (es) Procedimiento para preparar acidos carboxilicos insatura- dos.
JPS5422319A (en) Prepaeation of methacrylic acid
JPS56123946A (en) Preparation of unsaturated carboxylic acid ester
FR2360347A1 (fr) Catalyseur pour l'oxydation d'olefines en aldehydes insatures
GB1430337A (en) Process for the manufacture of methacrylic acid and oxidation catalyst therefor
KR830009805A (ko) 비스머스-세륨-몰리브데이트 촉매 조성물
JPS54100313A (en) Preparation of unsaturated carboxylic acid
JPS5616436A (en) Ppreparation of methacrolein
JPS5285114A (en) Preparation of unsaturated carboxylic acid
JPS5748938A (en) Preparation of carboxylic acid ester