Roy, S.C. and Prasad, H.L. and Dutta, P. and Bhattacharya, A. and Singh, B. and Kumar, Saroj (2001) Conversion of syn-gas to lower alkenes ove Fe-TiO2-ZnO-K2O catalyst system. Applied Catalysis A: General , 220. pp. 153-164. ISSN 0926-860X

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Conversion of syn-gas to lower alkenes is studied over a multicomponent catalyst system, Fe-TiO2-ZnO-K2O. Various reaction variables affecting the conversion were studied. AtH2:CO = 1, 2.5 kg/cm2 pressure, 250◦Ctemperature andGHSV = 960 h-1, maximum selectivity of 68% to alkenes was obtained at 45% conversion of the feed. The alkenes consist of a mixture of propylene (65%) and ethylene (35%). The catalyst is active even after 200 h of use. The catalyst samples were characterized by BET surface area measurements, TPR and TPD. XRD and ESCA studies reveal the presence of Fe2O3 phase in the fresh catalyst. This phase is ably promoted by Zn and K. On reaction with CO + H2, electron-rich species are formed on catalyst surface, which are the most likely active species. In addition to this, there is an improvement in dispersion of the active phase. These factors may contribute toward better performance of the catalyst in the conversion of syn-gas to lower alkenes.

Item Type: Article
Subjects: Chemicals and Liquid Fuels
Depositing User: Dr. Satyendra Kumar Singh
Date Deposited: 31 Jan 2012 10:21
Last Modified: 31 Jan 2012 10:21

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