Ethylene epoxidation catalyzed by chlorine-promoted silver oxide

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Atıf İçin Kopyala

Ozbek M. O., ÖNAL I., Van Santen R. A.

JOURNAL OF PHYSICS-CONDENSED MATTER, cilt.23, sa.40, 2011 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 23 Sayı: 40
• Basım Tarihi: 2011
• Doi Numarası: 10.1088/0953-8984/23/40/404202
• Dergi Adı: JOURNAL OF PHYSICS-CONDENSED MATTER
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

It is demonstrated that, on a silver oxide surface, direct formation of ethylene oxide (EO) through the reaction between gas phase ethylene and surface oxygen is possible. The direct reaction channel produces EO selectively without competing with acetaldehyde (AA) formation. The oxometallacycle (OMC) forms on an oxygen vacant surface and reduces EO selectivity. Cl adsorption removes these surface vacant sites and hence prevents the formation of the OMC intermediate.