Ayşe Nilgün AKIN, Şeyma ÖZKARA, Zülal MISIRLI, Ahmet Erhan AKSOYLU

The effect of metal loading on structural characteristics and low temperature CO oxidation activity of coprecipitated Co/$Al_2O_3$

ISSN: 1300-0527
Yayın Aralığı: Yılda 6 Sayı
Yayıncı: TÜBİTAK

The effect of metal loading on structural properties and CO oxidation activity of coprecipitated Co/Al2O3 catalysts was investigated. The results indicated the participation of cobalt in the Co-Al skeleton for all coprecipitated samples. Environmental-SEM-EDXS studies showed that at loadings higher than ca. 15 wt.-%, cobalt formed layer-by-layer clusters on the surface; 16.8 wt.-% Co/Al2O3 displayed the highest activity and stability in CO oxidation.

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1.Ş. Özkara and A.E. Aksoylu, Appl. Çatal. A 251, 75-83 (2003).
2.G. Gürdağ and T. Hahn, Appl. Çatal. A 192, 51-55 (2000).
3.M. Skoglundh, A. TÖrncrona, E. Fridell, E. Jobson and P. Thormâhlen, Appl. Çatal. B 14, 131-145 (1997).
4.F. Grillo,M.M. Natile and A. Glisenti, Appl. Çatal. B 48, 267-274 (2004).
5.Y.J. Mergler, J. Hoebink and B.E. Nieuwenhuys, B. E., J. Çatal. 167, 305-313 (1997).
6.P.Thormâhlen, M. Skoglundh, E. Fridell and B. Andersson, J. Çatal. 188, 300-310 (1999).
7.A.N. Akın, A.E. Aksoylu and Z.İ. Önsan, React. Kinet. Catal. Lett. 66, 393-399 (1999).
8.A.N. Akın and Z.İ. Önsan, J. Chem. Technol. Biotechnol. 69, 337-344 (1997).
9.A.N. Akın and Z.İ. Önsan, J. Chem. Technol. Biotechnol. 70, 304-310 (1997).
10.A.E. Aksoylu, A.N. Akm, Z.İ. Önsan and D.L. Trimm, Appl. Catal. A 145, 185-193 (1996).
11.J. van de Loosdrecht, M. van der Haar, A. M. van der Kraan, A. J. van Dillen and J.W. Geus, Appl. Catal.A 150, 365-376 (1997).