High Performance Hydrogen Sulfide Adsorbent Prepared by Abandoned Lignite Char

Abstract:

Lignite char, abandoned in Northwest China, was utilized as raw material precursor to produce hydrogen sulfide absorbent by surface modification with different methods. The absorbent was suitable for the removal of small amount of H2S in feed gas and exhibited high efficiency and recycle ability. After the modification, the physicochemical properties of lignite char were improved significantly, such as surface area, texture structure and functional groups contents and so on. The evaluation results indicated that the desulfurization performance could be increased obviously in H2S removal process after the modification. Moreover, it was an effectual way to enhance the desulfurization ability of the absorbents by loading some metal oxides, despite that could change the reaction path and was harmful to the absorbents’ regeneration.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 3387-3390
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.3387
• Online since: May 2012
• Authors: Ying Min Yu, Ru Ying Li, Qing Song Li
• Keywords: Absorbent, Hydrogen Sulfide, Lignite Char, Modification

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