Effect of pore structure of mesoporous carbon on its supported Ru catalysts for ammonia synthesis

doi:10.1016/S1872-2067(12)60596-8

Abstract

Abstract: Mesoporous carbon (MC) was prepared by a hard-template method and used as support for the preparation of a Ru-based ammonia synthesis catalyst, Ba-Ru-K/MC. N₂ adsorption-desorption, scanning electron microscopy, and transmission electron microscopy were used to characterize the mesoporous carbon and its supported Ru catalysts. The effects of pore structure of the Ba-Ru-K/MC catalyst on its performance for ammonia synthesis were studied. The results show that the surface area of the mesoporous carbon material varies with the SiO₂/C mass ratio and reaches the largest at 1.0 of SiO₂/C. The catalytic activity of Ba-Ru-K/MC for ammonia synthesis increases with increased mesoporous surface area of the mesoporous carbon. The reaction rate of ammonia synthesis is 139 mmol/(g_cat·h) at 425 ℃, 10 MPa, and a gas hourly space velocity of 10000 h^-1.

Key words: Mesoporous carbon, Ruthenium-based catalyst, High specific surface area, Pore structure, Ammonia synthesis

ZHOU Yaping, LAN Guojun, ZHOU Bin, JIANG Wei, HAN Wenfeng, LIU Huazhang, LI Ying. Effect of pore structure of mesoporous carbon on its supported Ru catalysts for ammonia synthesis[J]. Chinese Journal of Catalysis, DOI: 10.1016/S1872-2067(12)60596-8.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(12)60596-8

https://www.cjcatal.com/EN/Y2013/V34/I7/1395

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