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Oxygen permeation and oxidative coupling of methane in membrane reactor: A new facile synthesis method for selective perovskite catalyst

Taheri, Z ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1016/j.molcata.2008.01.043
  3. Publisher: 2008
  4. Abstract:
  5. A dense membrane of La0.6Sr0.4Co0.8Fe0.2O3- δ (LSCF) perovskite was prepared by a new chelating agent, ethylene diamine N,N,N′,N′-tetra N-acetyl diamine (EDTNAD). As a potent ligand, EDTNAD provided a facile one-step method to form complexes of the four metal ions, simultaneously. The oxygen permeation flux through the pure perovskite LSCF dense membrane was measured over temperature range of 1073-1223 K, thickness of 0.7-1.0 mm and oxygen partial pressure of 0.1-1.0 bar. Oxidative coupling of methane (OCM) reaction using LSCF disk in the atmospheric membrane reactor and over the temperature range of 1073-1173 K showed a C2 selectivity of 100% and C2 yield of 5.01% at 1153 K. Furthermore, OCM reaction data of the membrane reactor were discussed and compared with those of the fixed bed using the same perovskite powder as the catalyst. © 2008 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Catalysts ; Methane ; Oxidation ; Oxygen ; Perovskite ; Synthesis (chemical) ; Membrane reactors ; Oxygen permeation ; Selectivity ; Chemical reactors
  8. Source: Journal of Molecular Catalysis A: Chemical ; Volume 286, Issue 1-2 , 2008 , Pages 79-86 ; 13811169 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S1381116908000873