High-Temperature Gaseous H2S Removal by Zn-Mn-based Sorbent

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題名:	High-Temperature Gaseous H2S Removal by Zn-Mn-based Sorbent
作者:	張木彬;Guo, Li Feng;Pan, Kuan Lun;Lee, How Ming;Chang, Moo Been
貢獻者:	工學院環境工程研究所
關鍵詞:	activation energy;adsorbents;adsorption;air;aluminum oxide;carbon dioxide;carbon monoxide;durability;engineering;hydrogen;hydrogen sulfide;manganese;manganese oxides;sulfur;temperature;zinc
日期:	2015-11-11
上傳時間:	2026-04-23 15:03:04 (UTC+8)
出版者:	American Chemical Society
摘要:	摘要： Zn–Mn oxides supported on γ-Al2O3 are experimentally evaluated as an adsorbent for removing H2S from gas streams in the temperature range of 350–600 °C. Experimental results indicate that zinc and manganese oxide can be integrated to form a good solid solution for effective adsorption of H2S. With an operating temperature of 600 °C and 200 ppm of H2S on the gas stream, the adsorption capacity of H2S achieved with 10 wt % Zn–Mn/γ-Al2O3 (ZMA) reaches 52 mg S/g at a gas hourly space velocity (GHSV) of 20 000 h–1. Additionally, kinetic study is conducted to evaluate the activation energy. Results indicate that the activation energy of ZMA is 51 kJ/mol and that the reaction rate constant increases with increasing temperature. In addition, the H2S adsorption capacity of ZMA would be significantly increased as CO2, H2, and CO are added into the gas stream individually. In the regeneration process, the activity of ZMA can be completely recovered with air at the low regeneration temperature of 300 °C. Furthermore, the durability test results indicate that the sulfur adsorption capacity achieved with ZMA is maintained at about 52 mg S/g at 600 °C for at least 6 cycles. Overall, the Zn–Mn-based adsorbent shows good performance and stability for H2S removal. 其他題名： Ind. Eng. Chem. Res 出版者： American Chemical Society 出版日期： 2015-11-11 出處： Industrial & engineering chemistry research, 2015-11, Vol.54 (44), p.11040-11047 資源來源： American Chemical Society Journals 版權： Copyright © 2015 American Chemical Society 識別號： ISSN: 0888-5885 識別號： ISSN: 1520-5045 識別號： EISSN: 1520-5045 識別號： DOI: 10.1021/acs.iecr.5b02078
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