Recovery and reduction of spent alumina-supported cobalt-molybdenum oxide catalyst via plasma sintering technique

Fung Fuh Wong, Kuo Chen Chiang, Chun-Yen Chen, Kun Lung Chen, Jiann Jyh Huang, Mou Yung Yeh

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A thermal plasma process for the recovery and reduction of the spent alumina-supported cobalt-molybdenum oxide catalyst (Co 3O 4-MoO 2/Al 2O 3) was developed. The spent catalyst was sintered at >1,500 K under plasma condition and the cobalt-molybdenum oxide therein was reduced to cobalt-molybdenum, which was proven by XRD and EDX. By application of SEM and GC technique, the organic tar on the surface of the spent catalyst was found to decomposed and converted to syngas (CO, CO 2, and H 2), which might be the reducing agents in the process. A gasification mechanism for the generation of syngas and the reduction of cobalt-molybdenum oxide under plasma conditions was proposed.

Original languageEnglish
Pages (from-to)353-363
Number of pages11
JournalPlasma Chemistry and Plasma Processing
Volume28
Issue number3
DOIs
Publication statusPublished - 2008 Jun 1

Fingerprint

Molybdenum oxide
molybdenum oxides
cobalt oxides
Aluminum Oxide
Cobalt
sintering
Alumina
Sintering
synthesis gas
aluminum oxides
recovery
Plasmas
catalysts
Recovery
Catalysts
Carbon Monoxide
tars
gasification
thermal plasmas
Plasma Gases

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Surfaces, Coatings and Films

Cite this

Wong, Fung Fuh ; Chiang, Kuo Chen ; Chen, Chun-Yen ; Chen, Kun Lung ; Huang, Jiann Jyh ; Yeh, Mou Yung. / Recovery and reduction of spent alumina-supported cobalt-molybdenum oxide catalyst via plasma sintering technique. In: Plasma Chemistry and Plasma Processing. 2008 ; Vol. 28, No. 3. pp. 353-363.
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abstract = "A thermal plasma process for the recovery and reduction of the spent alumina-supported cobalt-molybdenum oxide catalyst (Co 3O 4-MoO 2/Al 2O 3) was developed. The spent catalyst was sintered at >1,500 K under plasma condition and the cobalt-molybdenum oxide therein was reduced to cobalt-molybdenum, which was proven by XRD and EDX. By application of SEM and GC technique, the organic tar on the surface of the spent catalyst was found to decomposed and converted to syngas (CO, CO 2, and H 2), which might be the reducing agents in the process. A gasification mechanism for the generation of syngas and the reduction of cobalt-molybdenum oxide under plasma conditions was proposed.",
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Recovery and reduction of spent alumina-supported cobalt-molybdenum oxide catalyst via plasma sintering technique. / Wong, Fung Fuh; Chiang, Kuo Chen; Chen, Chun-Yen; Chen, Kun Lung; Huang, Jiann Jyh; Yeh, Mou Yung.

In: Plasma Chemistry and Plasma Processing, Vol. 28, No. 3, 01.06.2008, p. 353-363.

Research output: Contribution to journalArticle

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T1 - Recovery and reduction of spent alumina-supported cobalt-molybdenum oxide catalyst via plasma sintering technique

AU - Wong, Fung Fuh

AU - Chiang, Kuo Chen

AU - Chen, Chun-Yen

AU - Chen, Kun Lung

AU - Huang, Jiann Jyh

AU - Yeh, Mou Yung

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