Preparation and desulfurization performance of coal gangue composite adsorption material

Abstract The preparation of composite adsorption materials from coal gangue can realize the high value resource utilization of coal gangue. With coal gangue as the base material and enteromorpha powder as the additional carbon source, the activated carbon porous silicon composite was prepared by one-step carbonization activation method. The structure of the composite was characterized by nitrogen adsorption, scanning electron microscopy (SEM), Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). The effects of activator concentration, activation temperature and activation time on the adsorption performance of the composite were studied. The results showed that the iodine adsorption performance and sulfur penetration capacity of the composite prepared under the conditions of 20% NaOH concentration, 800 ℃ and 60 min were 703 mg·g^-1 and 76.5 mg·g^-1, respectively. The mesoporous pore size less than 10 nm accounted for 41.07%. It was found by FTIR and XRD that the amorphous silicon existed on the surface of the sample after the acid-leaching process, and the additional carbon source introduced by Enteromorpha enteromorpha formed the activated carbon porous silicon composite. It was found by EDS that the S element was uniformly distributed on the surface of the sample during the desulphurization process, and the final composite material had good adsorption desulphurization effect.

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	TIAN Yuhong
	YANG Rongtian
	ZHANG Lichao
	LI Linbo

Keywords： coal gangue activated carbon composite material desulfurization

Received 2024-02-26;

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TIAN Yuhong, YANG Rongtian, ZHANG Lichao, LI Linbo.Preparation and desulfurization performance of coal gangue composite adsorption material[J] Chemcial Industry and Engineering, 2024,V41(6): 120-127

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