Contributions of Mn-doping in CuO/Al2O3 sorbent for enhancement of H2S removal at low and wide temperature range

Wang，Xin1; Chong，Junkai1; Liang，Shuoyang2; Guo，Min1; Zhang，Mei1

2023-02-15

10.1016/j.fuel.2022.126546

FUEL   影响因子和分区

0016-2361

1873-7153

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.

CuO/Al2O3 Low-temperature Mn-doping Oxygen vacancy Wide desulfurization temperature range

EI ; SCI

英语

通讯

Health Canada[2019YFC1905702];Health Canada[51972019];Health Canada[U21A20321];

Energy & Fuels ; Engineering

Energy & Fuels ; Engineering, Chemical

WOS:000994336700002

ELSEVIER SCI LTD

20224513092503

Alumina ; Aluminum oxide ; Chemical reactors ; Desulfurization ; Manganese ; Mass transfer ; Molar ratio ; Oxygen vacancies ; Sorbents ; Temperature

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

ENGINEERING

2-s2.0-85141462882

Scopus

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

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).