介质阻挡放电协同催化剂Cu/γ-Al<sub>2</sub>O<sub>3</sub>转化羰基硫

doi:10.11896/cldb.24030260

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Abstract The coupling of low-temperature plasma and catalyst has been widely used in the purification of gas pollutants due to the combination of high reactivity of low-temperature plasma and high selectivity of catalyst. In this work, using γ-Al₂O₃ as support, several catalysts differing in active component, i.e., Cu/γ-Al₂O₃、Mn/γ-Al₂O₃、Ce/γ-Al₂O₃、Fe/γ-Al₂O₃、Co/γ-Al₂O₃, were prepared. Then the conversion of carbonyl sulfur (COS) by the coupling of dielectric barrier discharge (DBD) low-temperature plasma and the catalysts were studied, in which the influences of factors such as COS initial concentration, flow rate, humidity, and oxygen concentration on COS transformation were analyzed. The results showed that Cu/γ-Al₂O₃+DBD not only exhibited higher conversion efficiency than the coupling of other catalysts with DBD, but also effectively inhibited the generation of by-products (H₂S, SO₂, O₃), thereby yielding elemental sulfur with high selectivity. By adopting an inlet COS concentration of 1 700 mL/m³, a gas flow rate of 200 mL/min, a relative humidity of 25%, an oxygen concentration of 0.3%, and a specific energy density (SED) of 1 954 J/L, the Cu/γ-Al₂O₃+DBD coupling achieved a 98.9% conversion of COS, with nearly no by-products generated. In addition, it was found that the COS conversion correlated negatively with each single variable of inlet COS concentration, gas flow rate, humidity, and oxygen concentration.

Key words： dielectric barrier discharge carbonyl sulfide synergy Cu/γ-Al₂O₃

Published: 25 July 2025 Online: 2025-07-29

CLC number:

X511

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	Articles by authors
	ZHOU Xiaoxia
	CHEN Peng
	LI Danting
	LI Defu
	CHEN Yi
	MA Yixing
	WANG Xueqian
	WANG Langlang
	NING Ping

Cite this article:

ZHOU Xiaoxia,CHEN Peng,LI Danting, et al. Conversion of Carbonyl Sulfur Through the Synergistic Effect of Dielectric Barrier Discharge and Catalyst Cu/γ-Al₂O₃[J]. Materials Reports, 2025, 39(14): 24030260-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24030260 OR https://www.mater-rep.com/EN/Y2025/V39/I14/24030260

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