Dehydrogenation of Ethylbenzene to Styrene with CO2 over TiO2-ZrO2 Bifunctional Catalyst 


Vol. 28,  No. 1, pp. 53-58, Jan.  2007
10.5012/bkcs.2007.28.1.053


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  Abstract

In the dehydrogenation of ethylbenzene to styrene, C2 could play a role as an oxidant to increase conversion of ethylbenzene and stability as well over Ti2-Zr2 mixed oxide catalysts. Ti2-Zr2 catalysts were prepared by co-precipitation method and were characterized by BET surface area, bulk density, X-ray diffraction, temperature programmed desorption of N3 and C2. These catalysts were found to be X-ray amorphous with enhanced surface areas and acid-base properties both in number and strength when compared to the respective oxides (Ti2 and C2). These catalysts were found to be highly active (> 50% conversion), selective (> 98%) and catalytically stable (10 h of time-on-stream) at 600 oC for the dehydrogenation of ethylbenzene to styrene. However, in the nitrogen stream, both activity and stability were rather lower than those in the stream with C2. The Ti2-Zr2 catalysts were catalytically superior to the simple oxide catalysts such as Ti2 and Zr2. The synergistic effect of C2 has clearly been observed in directing the product selectivity and prolonging catalytic activity.

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  Cite this article

[IEEE Style]

D. R. Burri, K. Choi, S. Han, A. Burri, S. Park, "Dehydrogenation of Ethylbenzene to Styrene with CO2 over TiO2-ZrO2 Bifunctional Catalyst," Bulletin of the Korean Chemical Society, vol. 28, no. 1, pp. 53-58, 2007. DOI: 10.5012/bkcs.2007.28.1.053.

[ACM Style]

David Raju Burri, Kwang-Min Choi, Sang-Cheol Han, Abhishek Burri, and Sang-Eon Park. 2007. Dehydrogenation of Ethylbenzene to Styrene with CO2 over TiO2-ZrO2 Bifunctional Catalyst. Bulletin of the Korean Chemical Society, 28, 1, (2007), 53-58. DOI: 10.5012/bkcs.2007.28.1.053.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949