Details

Autor(en) / Beteiligte

• Morejudo, S. H.
• Zanón, R.
• Escolástico, S.
• Yuste-Tirados, I.
• Malerød-Fjeld, H.
• Vestre, P. K.
• Coors, W. G.
• Martínez, A.
• Norby, T.
• Serra, J. M.
• Kjølseth, C.

Titel

Direct conversion of methane to aromatics in a catalytic co-ionic membrane reactor

Ist Teil von

• Science (American Association for the Advancement of Science), 2016-08, Vol.353 (6299), p.563-566

Ort / Verlag

United States: American Association for the Advancement of Science

Erscheinungsjahr

2016

Link zum Volltext

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• Nonoxidative methane dehydroaromatization (MDA: 6CH₄ ↔ C₆H₆ + 9H₂) using shape-selective Mo/zeolite catalysts is a key technology for exploitation of stranded natural gas reserves by direct conversion into transportable liquids. However, this reaction faces two major issues: The one-pass conversion is limited by thermodynamics, and the catalyst deactivates quickly through kinetically favored formation of coke. We show that integration of an electrochemical BaZrO₃-based membrane exhibiting both proton and oxide ion conductivity into an MDA reactor gives rise to high aromatic yields and improved catalyst stability. These effects originate from the simultaneous extraction of hydrogen and distributed injection of oxide ions along the reactor length. Further, we demonstrate that the electrochemical co-ionic membrane reactor enables high carbon efficiencies (up to 80%) that improve the technoeconomic process viability.