Activity of highly dispersed Co/SBA-15 catalysts (low content) in carbon black oxidation

Nissrine El Hassan, Sandra Casale, Samer Aouad, Theodore Hanein, Karam Jabbour, Elvis Chidiac, Bilal el Khoury, Henri El Zakhem, Hanna El Nakat

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Abstract

Cobalt supported on mesoporous silica SBA-15 (0.75, 1.5 and 3 wt% Co) were used as catalysts for the oxidation of carbon black. Catalysts were characterized by N2 sorption, XRD, TEM and TPR. The catalytic activity in CB oxidation was measured. It has been shown that only small cobalt domains (less than 5 nm) are present on all samples. A homogeneous dispersion was obtained for all catalysts. With increasing cobalt loading, crystalline species start to appear. Using an intermediate contact between the CB and the catalyst, the best activity is that of 0.75Co/SBA-15 catalyst where the oxidation reaches the maximum (Tmax) 68 K before the non-catalyzed reaction. On the same catalyst used in tight contact mode with CB, even if Tmax didn’t decrease for more than additional 12 K but the Ti decreases by 38K and thus starts 83 K before.
Original languageEnglish
Pages (from-to)231-236
Number of pages6
JournalPhysics Procedia
Volume55
Early online date2 Aug 2014
DOIs
Publication statusPublished - 2014

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catalysts
oxidation
carbon
cobalt
sorption
catalytic activity
silicon dioxide
transmission electron microscopy

Cite this

El Hassan, N., Casale, S., Aouad, S., Hanein, T., Jabbour, K., Chidiac, E., ... El Nakat, H. (2014). Activity of highly dispersed Co/SBA-15 catalysts (low content) in carbon black oxidation. Physics Procedia, 55, 231-236. https://doi.org/10.1016/j.phpro.2014.07.034

Activity of highly dispersed Co/SBA-15 catalysts (low content) in carbon black oxidation. / El Hassan, Nissrine; Casale, Sandra; Aouad, Samer; Hanein, Theodore; Jabbour, Karam; Chidiac, Elvis; el Khoury, Bilal; El Zakhem, Henri; El Nakat, Hanna.

In: Physics Procedia, Vol. 55, 2014, p. 231-236.

Research output: Contribution to journalArticle

El Hassan, N, Casale, S, Aouad, S, Hanein, T, Jabbour, K, Chidiac, E, el Khoury, B, El Zakhem, H & El Nakat, H 2014, 'Activity of highly dispersed Co/SBA-15 catalysts (low content) in carbon black oxidation', Physics Procedia, vol. 55, pp. 231-236. https://doi.org/10.1016/j.phpro.2014.07.034
El Hassan, Nissrine ; Casale, Sandra ; Aouad, Samer ; Hanein, Theodore ; Jabbour, Karam ; Chidiac, Elvis ; el Khoury, Bilal ; El Zakhem, Henri ; El Nakat, Hanna. / Activity of highly dispersed Co/SBA-15 catalysts (low content) in carbon black oxidation. In: Physics Procedia. 2014 ; Vol. 55. pp. 231-236.
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abstract = "Cobalt supported on mesoporous silica SBA-15 (0.75, 1.5 and 3 wt{\%} Co) were used as catalysts for the oxidation of carbon black. Catalysts were characterized by N2 sorption, XRD, TEM and TPR. The catalytic activity in CB oxidation was measured. It has been shown that only small cobalt domains (less than 5 nm) are present on all samples. A homogeneous dispersion was obtained for all catalysts. With increasing cobalt loading, crystalline species start to appear. Using an intermediate contact between the CB and the catalyst, the best activity is that of 0.75Co/SBA-15 catalyst where the oxidation reaches the maximum (Tmax) 68 K before the non-catalyzed reaction. On the same catalyst used in tight contact mode with CB, even if Tmax didn’t decrease for more than additional 12 K but the Ti decreases by 38K and thus starts 83 K before.",
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AU - El Hassan, Nissrine

AU - Casale, Sandra

AU - Aouad, Samer

AU - Hanein, Theodore

AU - Jabbour, Karam

AU - Chidiac, Elvis

AU - el Khoury, Bilal

AU - El Zakhem, Henri

AU - El Nakat, Hanna

PY - 2014

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AB - Cobalt supported on mesoporous silica SBA-15 (0.75, 1.5 and 3 wt% Co) were used as catalysts for the oxidation of carbon black. Catalysts were characterized by N2 sorption, XRD, TEM and TPR. The catalytic activity in CB oxidation was measured. It has been shown that only small cobalt domains (less than 5 nm) are present on all samples. A homogeneous dispersion was obtained for all catalysts. With increasing cobalt loading, crystalline species start to appear. Using an intermediate contact between the CB and the catalyst, the best activity is that of 0.75Co/SBA-15 catalyst where the oxidation reaches the maximum (Tmax) 68 K before the non-catalyzed reaction. On the same catalyst used in tight contact mode with CB, even if Tmax didn’t decrease for more than additional 12 K but the Ti decreases by 38K and thus starts 83 K before.

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