Synergetic Effect of La and Ba Promoters on Nanostructured Iron Catalyst in Fischer-Tropsch Synthesis

doi:10.1016/S1872-2067(11)60396-3

催化学报 ›› 2012, Vol. 33 ›› Issue (7): 1119-1124.DOI: 10.1016/S1872-2067(11)60396-3

Synergetic Effect of La and Ba Promoters on Nanostructured Iron Catalyst in Fischer-Tropsch Synthesis

Yahya ZAMANI1,2, Mehdi BAKAVOLI1,*, Mohamad RAHIMIZADEH1, Ali MOHAJERI2, Seyed Mohamad SEYEDI1

1Department of Chemistry, Ferdowsi University of Mashhad, Azadi Square, Mashhad, 91735-48974, Iran; 2Research Institute of Petroleum Industry (RIPI), National Iranian Oil Company; West Blvd., Near Azadi Sports Complex P.O.BOX 14665-137, Tehran, Iran

收稿日期:2012-01-05 修回日期:2012-03-22 出版日期:2012-06-21 发布日期:2012-06-21

Synergetic Effect of La and Ba Promoters on Nanostructured Iron Catalyst in Fischer-Tropsch Synthesis

Yahya ZAMANI1,2, Mehdi BAKAVOLI1,*, Mohamad RAHIMIZADEH1, Ali MOHAJERI2, Seyed Mohamad SEYEDI1

1Department of Chemistry, Ferdowsi University of Mashhad, Azadi Square, Mashhad, 91735-48974, Iran; 2Research Institute of Petroleum Industry (RIPI), National Iranian Oil Company; West Blvd., Near Azadi Sports Complex P.O.BOX 14665-137, Tehran, Iran

Received:2012-01-05 Revised:2012-03-22 Online:2012-06-21 Published:2012-06-21

摘要/Abstract

摘要： Effect of promoters such as Barium and Lanthanum has been investigated on the conventional nanostructured iron catalyst in Fischer-Tropsch synthesis (FTS). The nanosized iron-based catalysts were prepared by a microemulsion method with the general formulation of 100Fe/4Cu, 100Fe/4Cu/2La, 100Fe/4Cu/ 1La/1Ba, and 100Fe/4Cu/2Ba. The phase, structure, and morphology of the catalysts were characterized by X-ray diffraction, N₂ adsorption, transmission electron microscopy, temperature-programmed desorption of CO₂, and temperature-programmed reduction. The results indicated that the addition of promoters could improve the activity of Fe catalysts for FTS and WGS (water-gas shift reaction) and lower the gas fraction at the outlet. In addition, both Ba- and La-promoted Fe catalysts exhibit the highest activity due to the synergetic effect.

关键词: nanosized iron catalyst, microemulsion method, Fischer-Tropsch synthesis, promoter effect

Abstract: Effect of promoters such as Barium and Lanthanum has been investigated on the conventional nanostructured iron catalyst in Fischer-Tropsch synthesis (FTS). The nanosized iron-based catalysts were prepared by a microemulsion method with the general formulation of 100Fe/4Cu, 100Fe/4Cu/2La, 100Fe/4Cu/ 1La/1Ba, and 100Fe/4Cu/2Ba. The phase, structure, and morphology of the catalysts were characterized by X-ray diffraction, N₂ adsorption, transmission electron microscopy, temperature-programmed desorption of CO₂, and temperature-programmed reduction. The results indicated that the addition of promoters could improve the activity of Fe catalysts for FTS and WGS (water-gas shift reaction) and lower the gas fraction at the outlet. In addition, both Ba- and La-promoted Fe catalysts exhibit the highest activity due to the synergetic effect.

Key words: nanosized iron catalyst, microemulsion method, Fischer-Tropsch synthesis, promoter effect

Yahya ZAMANI, Mehdi BAKAVOLI, Mohamad RAHIMIZADEH, Ali MOHAJERI, Seyed Mohamad SEYEDI. Synergetic Effect of La and Ba Promoters on Nanostructured Iron Catalyst in Fischer-Tropsch Synthesis[J]. 催化学报, 2012, 33(7): 1119-1124.

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Synergetic Effect of La and Ba Promoters on Nanostructured Iron Catalyst in Fischer-Tropsch Synthesis

Synergetic Effect of La and Ba Promoters on Nanostructured Iron Catalyst in Fischer-Tropsch Synthesis

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