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-TYPES

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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
Application number
RO122268A
Other languages
Romanian (ro)
Inventor
Floare Coste
Original Assignee
Floare Coste
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 Floare Coste filed Critical Floare Coste
Priority to RO122268A priority Critical patent/RO94717B1/en
Publication of RO94717B1 publication Critical patent/RO94717B1/en

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%.

RO122268A 1986-02-18 1986-02-18 PROCESS FOR SEPARATING MOLYBDENUM FROM SPENT CATALYSTS OF Ni-Mo-Al2O3 AND Co-Mo-Al2O3-TYPES RO94717B1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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