RO94717B1 - PROCESS FOR SEPARATING MOLYBDENUM FROM SPENT CATALYSTS OF Ni-Mo-Al2O3 AND Co-Mo-Al2O3-TYPES - Google Patents
PROCESS FOR SEPARATING MOLYBDENUM FROM SPENT CATALYSTS OF Ni-Mo-Al2O3 AND Co-Mo-Al2O3-TYPESInfo
- Publication number
- RO94717B1 RO94717B1 RO122268A RO12226886A RO94717B1 RO 94717 B1 RO94717 B1 RO 94717B1 RO 122268 A RO122268 A RO 122268A RO 12226886 A RO12226886 A RO 12226886A RO 94717 B1 RO94717 B1 RO 94717B1
- Authority
- RO
- Romania
- Prior art keywords
- al2o3
- molybdenum
- types
- spent catalysts
- catalysts
- Prior art date
Links
Abstract
Inventia se refera la un procedeu de separare a molibdenului din catalizatori uzati de tipul Ni-Mo-Al2O3 si Co-Mo-Al2O3 avînd continut de 6...9% Mo prin calcinarea catalizatorului la temperatura de 200-550 degree C, timp de 1...2 h, urmata de lesierea molibdenului cu solutie 5...20% Na2CO3. Conditiile de lesiere sînt: raport S:t=1; 1:4, temperatura de lucru 60...80 degree C, timpul de reactie 20...60 min. Molibdenul din solutie se precipita sub forma de metamolibdat de amoniu, precipitarea realizîndu-se cu acid clorhidric si urotropina. Metamolibdenul de amoniu se calcineaza pentru trecere în trioxid de molibden, materie prima pentru prepararea catalizatorilor. Randamentul de extractie al molibdenului este de 85...90%.The invention relates to a process for the separation of molybdenum from spent catalysts such as Ni-Mo-Al2O3 and Co-Mo-Al2O3 having a content of 6 ... 9% Mo by calcining the catalyst at a temperature of 200-550 ° C for 1 ... 2 h, followed by molybdenum leaching with 5 ... 20% Na2CO3 solution. The lesion conditions are: ratio S: t = 1; 1: 4, working temperature 60 ... 80 ° C, reaction time 20 ... 60 min. Molybdenum from the solution precipitates as ammonium metamolybdate, precipitation being carried out with hydrochloric acid and urotropin. Ammonium metamolibden is calcined to pass into molybdenum trioxide, the raw material for the preparation of catalysts. The yield of molybdenum extraction is 85-90%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO122268A RO94717B1 (en) | 1986-02-18 | 1986-02-18 | PROCESS FOR SEPARATING MOLYBDENUM FROM SPENT CATALYSTS OF Ni-Mo-Al2O3 AND Co-Mo-Al2O3-TYPES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO122268A RO94717B1 (en) | 1986-02-18 | 1986-02-18 | PROCESS FOR SEPARATING MOLYBDENUM FROM SPENT CATALYSTS OF Ni-Mo-Al2O3 AND Co-Mo-Al2O3-TYPES |
Publications (1)
Publication Number | Publication Date |
---|---|
RO94717B1 true RO94717B1 (en) | 1988-07-31 |
Family
ID=40904313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RO122268A RO94717B1 (en) | 1986-02-18 | 1986-02-18 | PROCESS FOR SEPARATING MOLYBDENUM FROM SPENT CATALYSTS OF Ni-Mo-Al2O3 AND Co-Mo-Al2O3-TYPES |
Country Status (1)
Country | Link |
---|---|
RO (1) | RO94717B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2466199C1 (en) * | 2011-05-17 | 2012-11-10 | Открытое акционерное общество "Ведущий научно-исследовательский институт химической технологии" | Processing method of waste molybdenum-aluminium-containing catalyst |
RU2645825C1 (en) * | 2017-03-03 | 2018-02-28 | Акционерное общество "Ведущий научно-исследовательский институт химической технологии" | Method for processing spent molybdenum-aluminium-containing catalyst |
-
1986
- 1986-02-18 RO RO122268A patent/RO94717B1/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2466199C1 (en) * | 2011-05-17 | 2012-11-10 | Открытое акционерное общество "Ведущий научно-исследовательский институт химической технологии" | Processing method of waste molybdenum-aluminium-containing catalyst |
RU2645825C1 (en) * | 2017-03-03 | 2018-02-28 | Акционерное общество "Ведущий научно-исследовательский институт химической технологии" | Method for processing spent molybdenum-aluminium-containing catalyst |
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