Formation of Mo Metal Powder By Electrochemical Reduction of CaMoO4 and MoS2 Compounds

Date

2020-05-01

Author

Akpinar, Bengisu
Erdogan, Metehan
Karakaya, İshak

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Molybdenum (Mo) is a transition element and improves strength, toughness, hardenability and weldability of cast iron and steel. Commercially molybdenum production involves two staged hydrogen reduction which has some disadvantages. An alternative way to produce Mo metal powder is electrochemical production process, however, molten salt electrolysis is not suitable to produce Mo powder due to its high melting point. Moreover, FFC Cambridge process is also not applicable for production of molybdenum because of Mo loss during the process. An alternative electrochemical process was searched to produce Mo metal powder in this study. CaMoO4 (calcium molybdate) and MoS2 (molybdenum disulphide) were used as raw materials for reduction process. CaMoO4 was not successfully reduced, because solubility of CaMoO4 was observed during experiments. Complete reduction of MoS2 to Mo was achieved and CaS was observed as a by-product at 750oC under argon gas flow. CaS was removed by a dilute acid washing to obtain Mo metal powder.

URI

ECS Meeting Abstracts, Volume MA2020-01, E03: Electrodeposition of Alloys, Intermetallic Compounds, and Eutectics
https://hdl.handle.net/11511/94024

DOI

https://doi.org/10.1149/ma2020-01201238mtgabs

Conference Name

237th ECS Meeting

Collections

Department of Metallurgical and Materials Engineering, Conference / Seminar

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Citation Formats

B. Akpinar, M. Erdogan, and İ. Karakaya, “Formation of Mo Metal Powder By Electrochemical Reduction of CaMoO4 and MoS2 Compounds,” presented at the 237th ECS Meeting, Montreal, Kanada, 2020, Accessed: 00, 2021. [Online]. Available: ECS Meeting Abstracts, Volume MA2020-01, E03: Electrodeposition of Alloys, Intermetallic Compounds, and Eutectics.