Contributions of Mn-doping in CuO/Al2O3 sorbent for enhancement of H2S removal at low and wide temperature range
In this study, the sorbents of Mn doped CuO loading on alumina particles have been successfully synthesized by hydrothermal method for capturing HS at low-temperature in a dry and anaerobic environment. Effects of the calcination temperature and Cu/Mn molar ratio on the desulfurization performance of CuO/AlO sorbents are investigated. The low temperature desulfurization performances of CuO/AlO are detected in the fixed-bed reactor and the surface morphologies, phase structures and desulfurization mechanism are systematically characterized using XRF, FESEM, XRD, XPS and HRTEM techniques. It is found that the sorbent prepared under optimum conditions is 300Cu-Mn-(1:1) sorbent and Mn-doping successfully modified the CuO microstructure into fibers. The average breakthrough HS capacity of 300Cu-Mn-(1:1) sorbent is above 49.7 mg/g from 150 °C to 60 °C with over 62.3 % CuO active component utilization. Mn doping promotes CuO's breakthrough HS capacity by 176 %, because the doping of Mn ions may introduce more oxygen vacancies in CuO lattice, resulting to the decrease of the mass-transfer resistance of S ions in the CuO lattice at low temperature. This study provides a reference for low temperature desulfurization during iron production.
Health Canada[2019YFC1905702];Health Canada;Health Canada[U21A20321];
|EI Accession Number|
Alumina ; Aluminum oxide ; Chemical reactors ; Desulfurization ; Manganese ; Mass transfer ; Molar ratio ; Oxygen vacancies ; Sorbents ; Temperature
|ESI Classification Code|
Manganese and Alloys:543.2 ; Thermodynamics:641.1 ; Mass Transfer:641.3 ; Physical Chemistry:801.4 ; Chemical Plants and Equipment:802.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Inorganic Compounds:804.2 ; Crystalline Solids:933.1
|ESI Research Field|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||School of Environmental Science and Engineering|
1.State Key Laboratory of Advanced Metallurgy,School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing,100083,China
2.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
|Corresponding Author Affilication||School of Environmental Science and Engineering|
Wang，Xin,Chong，Junkai,Liang，Shuoyang,et al. Contributions of Mn-doping in CuO/Al2O3 sorbent for enhancement of H2S removal at low and wide temperature range[J]. FUEL,2023,334.
Wang，Xin,Chong，Junkai,Liang，Shuoyang,Guo，Min,&Zhang，Mei.(2023).Contributions of Mn-doping in CuO/Al2O3 sorbent for enhancement of H2S removal at low and wide temperature range.FUEL,334.
Wang，Xin,et al."Contributions of Mn-doping in CuO/Al2O3 sorbent for enhancement of H2S removal at low and wide temperature range".FUEL 334(2023).
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