TiO2 supported cobalt-manganese nano catalysts for light olefins production from syngas

能源化学(英文) ›› 2013, Vol. 22 ›› Issue (4): 645-652.

TiO₂ supported cobalt-manganese nano catalysts for light olefins production from syngas

Mostafa Feyzi^a, Asadollah Hassankhani^b

a. Faculty of Chemistry, Razi University, Kermanshah, P. O. Box: +9867149, Iran;
b. Department of Materials Science, International Center for Science, High Technology & Environmental Sciences, Kerman, P. O. Box: +9876315117, Iran

收稿日期:2012-05-10 修回日期:2012-07-31 出版日期:2013-07-20 发布日期:2013-07-27
通讯作者: Mostafa Feyzi
基金资助:
This work was supported by the International Center for Science, High Technology & Environmental Sciences.

TiO₂ supported cobalt-manganese nano catalysts for light olefins production from syngas

Mostafa Feyzi^a, Asadollah Hassankhani^b

a. Faculty of Chemistry, Razi University, Kermanshah, P. O. Box: +9867149, Iran;
b. Department of Materials Science, International Center for Science, High Technology & Environmental Sciences, Kerman, P. O. Box: +9876315117, Iran

Received:2012-05-10 Revised:2012-07-31 Online:2013-07-20 Published:2013-07-27
Supported by:
This work was supported by the International Center for Science, High Technology & Environmental Sciences.

摘要/Abstract

摘要： Cobalt-manganese nano catalysts were prepared by sol-gel method. This research investigated the effects of different cobalt-manganese (Co/Mn = 1/1) loading, pH and calcination conditions on the catalytic performance of Co-Mn/TiO₂ catalysts for Fischer-Tropsch synthesis (FTS) in a fixed bed reactor. It was found that the catalyst containing 30wt%(Co-Mn)/TiO₂ was an optimal catalyst for the conversion of synthesis gas to light olefins especially propylene. The activity and selectivity of optimal catalyst were studied under different operational conditions. The results showed that the best operational conditions were H₂/CO = 1/1 molar feed ratio at 250 ℃ and GHSV = 1300 h^-1 under atmospheric pressure. Characterization of catalysts was carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N₂ adsorption-desorption measurements.

关键词: sol-gel, Fischer-Tropsch synthesis, light olefins, operational condition

Abstract: Cobalt-manganese nano catalysts were prepared by sol-gel method. This research investigated the effects of different cobalt-manganese (Co/Mn = 1/1) loading, pH and calcination conditions on the catalytic performance of Co-Mn/TiO₂ catalysts for Fischer-Tropsch synthesis (FTS) in a fixed bed reactor. It was found that the catalyst containing 30wt%(Co-Mn)/TiO₂ was an optimal catalyst for the conversion of synthesis gas to light olefins especially propylene. The activity and selectivity of optimal catalyst were studied under different operational conditions. The results showed that the best operational conditions were H₂/CO = 1/1 molar feed ratio at 250 ℃ and GHSV = 1300 h^-1 under atmospheric pressure. Characterization of catalysts was carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N₂ adsorption-desorption measurements.

Key words: sol-gel, Fischer-Tropsch synthesis, light olefins, operational condition

Mostafa Feyzi, Asadollah Hassankhani. TiO₂ supported cobalt-manganese nano catalysts for light olefins production from syngas[J]. 能源化学(英文), 2013, 22(4): 645-652.

Mostafa Feyzi, Asadollah Hassankhani. TiO₂ supported cobalt-manganese nano catalysts for light olefins production from syngas[J]. Journal of Energy Chemistry, 2013, 22(4): 645-652.

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TiO₂ supported cobalt-manganese nano catalysts for light olefins production from syngas

TiO₂ supported cobalt-manganese nano catalysts for light olefins production from syngas

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