RO70539B - Procedeu pentru regenerarea catalizatorilor de paladiu - Google Patents

Procedeu pentru regenerarea catalizatorilor de paladiu

Info

Publication number
RO70539B
RO70539B RO85283A RO8528376A RO70539B RO 70539 B RO70539 B RO 70539B RO 85283 A RO85283 A RO 85283A RO 8528376 A RO8528376 A RO 8528376A RO 70539 B RO70539 B RO 70539B
Authority
RO
Romania
Prior art keywords
regeneration
fatty acid
nitric acid
palladium catalysts
oxygen
Prior art date
Application number
RO85283A
Other languages
English (en)
Other versions
RO70539A (ro
Inventor
Hans Feruholz
Hans Krekeler
Hans Joachim Schmidt
Wunder
Original Assignee
Hoechst Aktiengesellschaft
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 DE19752513125 external-priority patent/DE2513125C3/de
Application filed by Hoechst Aktiengesellschaft filed Critical Hoechst Aktiengesellschaft
Publication of RO70539B publication Critical patent/RO70539B/ro
Publication of RO70539A publication Critical patent/RO70539A/ro

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
    • B01J23/90—Regeneration or reactivation
    • B01J23/96—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the noble metals
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/04—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
    • C07C67/05—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation
    • C07C67/055—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation in the presence of platinum group metals or their compounds
    • 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
    • Y02P20/584—Recycling of catalysts

Landscapes

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

Abstract

Procedeu pentru regenerarea catalizatorilor de paladiu pe suport, folositi la oxacilarea olefinelor în faza gazoasa, caracterizata prin aceea ca, în scopul reactivarii executa tratarea acestora cu un amestec constituita din 80...99,9% de preferinta,90...99% dintr-un acid gras monocarboxilic alifatic saturat nesubstituit, cu cel mult 10 atomi de carbon în molecula, lichid în conditii normale si 0,1...20%, de preferinta, 1...10% oxizi de azot, preferabil cu continut de oxigen sau cu gaze continîndoxigen, acid azotic, peroxizi sau peracizi, de preferinta, acid azotic, dupa care catalizatorii respectivi se usuca, de preferinta, la presiune scazuta si într-un curent de gaz inert, la o temperatura sub 90 degree C, un timp suficient pentru evaporarea ac idului gras, pîna la un continut rezidual mai mic de 8%.
RO7685283A 1975-03-25 1976-03-24 Procedeu pentru regenerarea catalizatorilor de paladiu RO70539A (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752513125 DE2513125C3 (de) 1975-03-25 Verfahren zur Regenerierung von Palladiumkatalysatoren

Publications (2)

Publication Number Publication Date
RO70539B true RO70539B (ro) 1983-01-30
RO70539A RO70539A (ro) 1983-02-01

Family

ID=5942366

Family Applications (1)

Application Number Title Priority Date Filing Date
RO7685283A RO70539A (ro) 1975-03-25 1976-03-24 Procedeu pentru regenerarea catalizatorilor de paladiu

Country Status (26)

Country Link
US (1) US4092267A (ro)
JP (1) JPS51119693A (ro)
AR (1) AR216436A1 (ro)
AU (1) AU503064B2 (ro)
BE (1) BE840006A (ro)
BG (1) BG28408A3 (ro)
BR (1) BR7601795A (ro)
CA (1) CA1075220A (ro)
CS (1) CS241004B2 (ro)
DD (1) DD125189A5 (ro)
DK (1) DK129376A (ro)
ES (1) ES446211A1 (ro)
FR (1) FR2305231A1 (ro)
GB (1) GB1533485A (ro)
HU (1) HU179025B (ro)
IE (1) IE42530B1 (ro)
IT (1) IT1058494B (ro)
LU (1) LU74629A1 (ro)
NL (1) NL7602910A (ro)
NO (1) NO146801C (ro)
PL (1) PL101950B1 (ro)
RO (1) RO70539A (ro)
SE (1) SE406279B (ro)
SU (1) SU927101A3 (ro)
YU (1) YU37274B (ro)
ZA (1) ZA761778B (ro)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3102087A1 (de) * 1981-01-23 1982-09-02 Basf Ag, 6700 Ludwigshafen Verfahren zur regenerierung von palladium und/oder platin und tellur enthaltenden traegerkatalysatoren
US4849385A (en) * 1987-08-26 1989-07-18 Mobil Oil Corporation Process for dispersing or redispersing a group VIII noble metal species on a porous inorganic support
EP0972569A1 (en) * 1998-06-25 2000-01-19 Engelhard Corporation Process for regenerating a used precious metal catalyst

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA708198A (en) * 1965-04-20 Shell Oil Company Oxidation of metals in organic media
US3260739A (en) * 1961-12-26 1966-07-12 Union Oil Co Production of vinyl acetate by oxidation of ethylene with a palladous salt-containing catalyst and catalyst regeneration with oxygen and a nitrite or nitrogen oxide
GB1016626A (en) * 1963-01-17 1966-01-12 Shell Int Research The regeneration of precious metal carboxylates
US3290362A (en) * 1963-08-05 1966-12-06 Union Oil Co Process for preparing esters and acetals by the oxidation of olefins
FR1479886A (fr) * 1965-05-17 1967-05-05 Standard Oil Co Perfectionnements au traitement et à la régénération des catalyseurs au palladium, ainsi qu'à ces catalyseurs et aux procédés chimiques les mettant en oeuvre
GB1128993A (en) * 1966-06-07 1968-10-02 Bp Chem Int Ltd Improvements in or relating to the production of vinyl acetate
US3686287A (en) * 1968-11-12 1972-08-22 Union Oil Co Hydrocarbon olefin oxidation

Also Published As

Publication number Publication date
FR2305231A1 (fr) 1976-10-22
PL101950B1 (pl) 1979-02-28
AU1230076A (en) 1977-09-29
NO146801B (no) 1982-09-06
ZA761778B (en) 1977-03-30
IT1058494B (it) 1982-04-10
HU179025B (en) 1982-08-28
JPS51119693A (en) 1976-10-20
DE2513125A1 (de) 1976-09-30
GB1533485A (en) 1978-11-29
SU927101A3 (ru) 1982-05-07
YU76576A (en) 1983-04-27
NL7602910A (nl) 1976-09-28
BR7601795A (pt) 1976-09-28
RO70539A (ro) 1983-02-01
NO146801C (no) 1982-12-15
IE42530B1 (en) 1980-08-27
ES446211A1 (es) 1977-06-01
DK129376A (da) 1976-09-26
CS241004B2 (en) 1986-03-13
YU37274B (en) 1984-08-31
DD125189A5 (ro) 1977-04-06
LU74629A1 (ro) 1977-01-27
SE406279B (sv) 1979-02-05
BG28408A3 (en) 1980-04-15
US4092267A (en) 1978-05-30
CS189776A2 (en) 1985-06-13
BE840006A (fr) 1976-09-27
SE7602766L (sv) 1976-09-26
NO761036L (ro) 1976-09-28
CA1075220A (en) 1980-04-08
IE42530L (en) 1976-09-25
DE2513125B2 (de) 1977-01-20
AU503064B2 (en) 1979-08-23
FR2305231B1 (ro) 1979-06-22
AR216436A1 (es) 1979-12-28

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