Gas phase oxidation of benzoic acid to phenol over nickel oxide catalysts

V. Duma, K. E. Popp, M. C. Kung, H. Zhou, S. Nguyen, S. Ohyama, Harold H Kung, C. L. Marshall

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The catalytic conversion of benzoic acid to phenol in the presence of water and oxygen was studied in the vapor phase over nickel oxide on various supports. NiO/SiO2 was the most selective, and the selectivity reached over 50% using iron oxide and sodium oxide modifiers. Ni-Fe oxide prepared by coprecipitation deactivated with time-on-stream, but that prepared using a cellulose templating method was more stable. Benzene was often a significant by-product. Some coupling products were formed, including xanthone, fluorenone, and biphenyl. From deuterium isotope labeling experiments, the hydroxyl group was found to be formed at the carbon next to the one with the carboxylic acid group.

Original languageEnglish
Pages (from-to)227-236
Number of pages10
JournalChemical Engineering Journal
Volume99
Issue number3
DOIs
Publication statusPublished - Jul 1 2004

Fingerprint

Nickel oxide
Benzoic Acid
Benzoic acid
Deuterium
Coprecipitation
Carboxylic Acids
Phenol
Benzene
Cellulose
Isotopes
Hydroxyl Radical
Oxides
Labeling
Phenols
Byproducts
phenol
nickel
Carbon
Gases
catalyst

Keywords

  • Benzoic acid
  • Heterogeneous catalysis
  • Nickel oxide
  • Phenol synthesis

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Environmental Engineering

Cite this

Duma, V., Popp, K. E., Kung, M. C., Zhou, H., Nguyen, S., Ohyama, S., ... Marshall, C. L. (2004). Gas phase oxidation of benzoic acid to phenol over nickel oxide catalysts. Chemical Engineering Journal, 99(3), 227-236. https://doi.org/10.1016/j.cej.2003.11.012

Gas phase oxidation of benzoic acid to phenol over nickel oxide catalysts. / Duma, V.; Popp, K. E.; Kung, M. C.; Zhou, H.; Nguyen, S.; Ohyama, S.; Kung, Harold H; Marshall, C. L.

In: Chemical Engineering Journal, Vol. 99, No. 3, 01.07.2004, p. 227-236.

Research output: Contribution to journalArticle

Duma, V, Popp, KE, Kung, MC, Zhou, H, Nguyen, S, Ohyama, S, Kung, HH & Marshall, CL 2004, 'Gas phase oxidation of benzoic acid to phenol over nickel oxide catalysts', Chemical Engineering Journal, vol. 99, no. 3, pp. 227-236. https://doi.org/10.1016/j.cej.2003.11.012
Duma, V. ; Popp, K. E. ; Kung, M. C. ; Zhou, H. ; Nguyen, S. ; Ohyama, S. ; Kung, Harold H ; Marshall, C. L. / Gas phase oxidation of benzoic acid to phenol over nickel oxide catalysts. In: Chemical Engineering Journal. 2004 ; Vol. 99, No. 3. pp. 227-236.
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