An efficient oxygen activation route for improved ammonia oxidation through an oxygen-permeable catalytic membrane

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Zhengwen Cao
  • Heqing Jiang
  • Huixia Luo
  • Stefan Baumann
  • Wilhelm A. Meulenberg
  • Hartwig Voss
  • Jürgen Caro

Externe Organisationen

  • Qingdao Institute Of Bioenergy & Bioprocess Technology Chinese Academy Of Sciences
  • Princeton University
  • Forschungszentrum Jülich
  • BASF SE
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Details

OriginalspracheEnglisch
Seiten (von - bis)1190-1194
Seitenumfang5
FachzeitschriftCHEMCATCHEM
Jahrgang6
Ausgabenummer5
PublikationsstatusVeröffentlicht - 7 Mai 2014

Abstract

Upon using a reactant/oxygen mixture as co-feed in partial oxidation, adsorbed surface molecular oxygen species can cause low selectivity. We propose a concept different from the conventional co-feed partial oxidation process in packed-bed reactors. In this new configuration, the activation of oxygen is separated from the catalytic oxidation by using an oxygen-permeable membrane to suppress the formation of nonselective surface molecular oxygen species. A continuous flux of lattice oxygen through the membrane allows highly selective partial oxidation. In the oxidation of ammonia to NO, the NO selectivity was improved from 77 to 95 % if a La0.6Sr0.4Co 0.2Fe0.8O3-δ oxygen-permeable catalytically active membrane was used at 850 °C instead of a co-feed fixed bed reactor. Got to get some activated oxygen through: By using an oxygen-permeable membrane, the activation of oxygen is separated from the catalytic oxidation, which suppresses the formation of nonselective surface molecular oxygen species that can cause low selectivity. A continuous flux of lattice oxygen through the membrane allows highly selective partial oxidation. As a result, the selectivity for NO in the oxidation of ammonia is improved.

ASJC Scopus Sachgebiete

Zitieren

An efficient oxygen activation route for improved ammonia oxidation through an oxygen-permeable catalytic membrane. / Cao, Zhengwen; Jiang, Heqing; Luo, Huixia et al.
in: CHEMCATCHEM, Jahrgang 6, Nr. 5, 07.05.2014, S. 1190-1194.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Cao, Z, Jiang, H, Luo, H, Baumann, S, Meulenberg, WA, Voss, H & Caro, J 2014, 'An efficient oxygen activation route for improved ammonia oxidation through an oxygen-permeable catalytic membrane', CHEMCATCHEM, Jg. 6, Nr. 5, S. 1190-1194. https://doi.org/10.1002/cctc.201400048
Cao, Z., Jiang, H., Luo, H., Baumann, S., Meulenberg, W. A., Voss, H., & Caro, J. (2014). An efficient oxygen activation route for improved ammonia oxidation through an oxygen-permeable catalytic membrane. CHEMCATCHEM, 6(5), 1190-1194. https://doi.org/10.1002/cctc.201400048
Cao Z, Jiang H, Luo H, Baumann S, Meulenberg WA, Voss H et al. An efficient oxygen activation route for improved ammonia oxidation through an oxygen-permeable catalytic membrane. CHEMCATCHEM. 2014 Mai 7;6(5):1190-1194. doi: 10.1002/cctc.201400048
Cao, Zhengwen ; Jiang, Heqing ; Luo, Huixia et al. / An efficient oxygen activation route for improved ammonia oxidation through an oxygen-permeable catalytic membrane. in: CHEMCATCHEM. 2014 ; Jahrgang 6, Nr. 5. S. 1190-1194.
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