1. Controlling the metal-support interaction of Cu/ZnO sorbent to improve its ultra-deep desulfurization performance for thiophene in coke oven gas.
- Author
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Zhang, Xiaoxia, Liao, Junjie, Zhou, Zhipeng, Wang, Yongjin, Chang, Liping, and Bao, Weiren
- Subjects
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COPPER , *COKE (Coal product) , *DESULFURIZATION , *ZINC oxide , *THIOPHENES , *NICKEL phosphide - Abstract
The deep removal of thiophene sulfur from coke oven gas (COG) is an important aspect for the subsequent production of COG to natural gas via methanation. In this process, copper-based sorbents exhibit excellent desulfurization activity. However, the activity of the sorbent depends largely on the interaction between Cu and Zn in the sorbent, which is often used to stabilize metal particles and regulate the activity and stability of the sorbent. Despite a large number of studies on metal-support interaction, there is still a lack of understanding of the effects of metal-support interaction of different strengths on the structure and performance of sorbents. In this work, Cu/ZnO sorbents with different strengths of metal-support interaction were successfully synthesized to elucidate the effect of the interaction between Cu and Zn on the performance of thiophene removal. The reconstruction process of the sorbent (different component ratios) changed the Cu Zn interaction. For weakly interacting sorbents, the reconstruction process enhanced the interaction between the two components, which is conducive to electron transfer and overall activity improvement. On the contrary, for sorbents with strong interaction, the reconstruction process was hindered. • Cu/ZnO is an excellent sorbent for thiophene removal from coke oven gas. • The interaction between Cu and ZnO could be cotrolled by Cu–Zn atomic ratio. • The CZ 1.00 sorbent with Cu–Zn atomic ratio of 1.00 has the best desulfurization performance. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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