Study of intrinsic sulfidation behavior of Fe2O3 for high temperature H2S removal

Ren, Xiurong; Chang, Liping; Li, Fan; Xie, Kui

doi:10.1016/j.fuel.2009.04.010

Cited by 50 publications

(16 citation statements)

References 23 publications

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“…In the case of the interaction between H 2 S and α-Fe 2 O 3 surface, Ren et al [16] experimentally investigated the intrinsic sulfidation behavior of Fe 2 O 3 by XRD and XPS methods, and demonstrated S atom could adsorbed on Fe site to produce sulfide and on O site to generate SO 2 . Nevertheless, the H atom only occurred on O site to form OH -.…”

Section: Introductionmentioning

confidence: 99%

H2S adsorption and decomposition on the gradually reduced α-Fe2O3(001) surface: A DFT study

Lin

Chen

2016

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

H2S adsorption and decomposition on the gradually reduced α-Fe2O3(001) surface: A DFT study

Lin

Chen

2016

Applied Surface Science

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“…The peaks of Fe 2 O 3 were found at 711.05 eV and 724.3 eV after the regression fitting. [22][23] In addition, multiple splitting [24] [25][26] Figure 3b shows the XPS spectrum of S2p before and after Fe/AC desulfurization. There is no obvious peak in the S2p spectrum of the fresh desulfurizer, which indicates that there is no sulfide in the fresh desulfurizer.…”

Section: Xps Analysis Of Fe/ac Desulfurizersmentioning

confidence: 99%

Desulfurization Process and Kinetics of Fe/Activated Carbon Removal of H₂S at Low Temperature

et al. 2020

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Fe/activated carbon desulfurizer is prepared by precipitation method using activated carbon as carrier to remove H2S. The desulfurizer before and after desulfurization was characterized by XRD, XPS, SEM and N2 adsorption–desorption. The results show that the active component of desulfurizer is Fe2O3, which reacts with H2S to form FeS, elemental sulfur and Fe2(SO4)3. The sulfide block the pores, causing the specific surface area, pore volume and fractal dimension to decrease after desulfurization. The effects of gas flow rate, particle size and temperature on the removal of H2S were investigated by solid‐bed reactor. Based on the above experimental data, an improved unreacted shrinking core model is used to study the kinetics of Fe/activated carbon desulfurization at low temperature. The improved unreacted shrinking core model is used to analyzing experimental data, in which the activation energies of surface reaction and internal diffusion were determined to be 0.8801 and 3.301 kJ/mol, respectively.

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“…However, the effect of the formation and decomposition of sulphates on the sorbent as the regeneration temperature increased has not been reported. Sorbent for the removal of H 2 S from hot gases should be cheap, [13][14] have favourable dynamic properties 14 and possess good adsorption capacity, physical strength and regenerability, 15 iron oxide based desulphurisation sorbents are the most suitable sorbents, and the iron sulphates formed during regeneration decompose readily at high regeneration temperatures. Therefore, in this work, we examined the effect of the regeneration conditions, such as atmosphere and temperature, on the properties of the α-Fe 2 O 3 desulphurisation sorbent.…”

Section: Introductionmentioning

confidence: 99%

Effect of regeneration atmosphere on the properties of an iron oxide desulphurisation sorbent for high-temperature coal gas desulphurisation

Gao

et al. 2015

Materials Research Innovations

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Desulphurisation sorbent properties, including desulphurisation activity and mechanical strength, are important in the sulphidation/regeneration cycle for high-temperature coal gas desulphurisation. In this paper, α-Fe 2 O 3 desulphurisation sorbent was prepared and the changes in its mechanical strength and the surface morphology after regeneration in O 2 , SO 2 and SO 2 -O 2 atmospheres were measured with a particle strength tester and by scanning electron microscopy. The mechanical strength of the sorbent was generally higher after regeneration, although the formation and decomposition of sulphate during regeneration decreased the mechanical strength of the sorbent. The sulphate formation and decomposition depended on the O 2 and SO 2 concentration and the regeneration temperature. The mechanical strength was also increased by the sorbent sintering.

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Study of intrinsic sulfidation behavior of Fe2O3 for high temperature H2S removal

Cited by 50 publications

References 23 publications

H2S adsorption and decomposition on the gradually reduced α-Fe2O3(001) surface: A DFT study

H2S adsorption and decomposition on the gradually reduced α-Fe2O3(001) surface: A DFT study

Desulfurization Process and Kinetics of Fe/Activated Carbon Removal of H₂S at Low Temperature

Effect of regeneration atmosphere on the properties of an iron oxide desulphurisation sorbent for high-temperature coal gas desulphurisation

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Study of intrinsic sulfidation behavior of Fe2O3 for high temperature H2S removal

Cited by 50 publications

References 23 publications

H2S adsorption and decomposition on the gradually reduced α-Fe2O3(001) surface: A DFT study

H2S adsorption and decomposition on the gradually reduced α-Fe2O3(001) surface: A DFT study

Desulfurization Process and Kinetics of Fe/Activated Carbon Removal of H2S at Low Temperature

Effect of regeneration atmosphere on the properties of an iron oxide desulphurisation sorbent for high-temperature coal gas desulphurisation

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Desulfurization Process and Kinetics of Fe/Activated Carbon Removal of H₂S at Low Temperature