Catalytic activities of Fe2O3 and chromium doped Fe2O3 for sulfuric acid decomposition reaction in an integrated boiler, preheater, and catalytic decomposer

Banerjee, Atindra Mohan; Shirole, A.R.; Pai, Mrinal R.; Tripathi, A. K.; Bharadwaj, S.R.; Das, Dillip Kumar; Sinha, Pradeep K.

doi:10.1016/j.apcatb.2012.07.030

Cited by 51 publications

(20 citation statements)

References 59 publications

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“…According to elementary compositions and structures, catalysts can be divided into noble metals (Pt [5,[14][15][16][17][18][19]), transition metal oxides (Fe 2 O 3 [13][14][15][16][20][21][22][23], CuO [5,13,16,23], Cr 2 O 3 [13], etc. ), complex metal oxides (ZnFe 2 O 4 [24], NiFe 2 O 4 [24,25], CuFe 2 O 4 [19,25], Fe 2(1Àx) Cr 2x O 3 (x = 0.0, 0.1, 0.2) [26,27], CuFe-Al 2 O 3 [28], FeTiO 3 [29], CoFe 2 O 4 [25], etc. ), and intermetallic alloys (Ag-Pd [20]).…”

Section: Introductionmentioning

confidence: 99%

Detailed kinetic modeling of homogeneous H2SO4 decomposition in the sulfur–iodine cycle for hydrogen production

Zhang

Zhou

et al. 2014

Applied Energy

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Section: Introductionmentioning

confidence: 99%

Detailed kinetic modeling of homogeneous H2SO4 decomposition in the sulfur–iodine cycle for hydrogen production

Zhang

Zhou

et al. 2014

Applied Energy

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“…Wherein the above metal oxides and copper, zinc, lead smelting dust, Fe2O3 displayed the strongest catalytic oxidation capacity. The reasons may be as follows [25][26][27][28]: first, the catalytic oxidation strength of the metal oxides or smelting dust is related to the Based on the above experimental results and analysis, we can see that the effect of heterogeneous catalytic oxidation on SO 2 conversion rate is much greater than that of pure gas phase oxidation, whether it is metal oxide or various smelting dust, because of providing the large surface area necessary for rapid SO 2 oxidation, and largely enhancing the rate of mass and heat transfer at the metal oxides and dust gas-solid interface [23,24].…”

Section: The Influence On Flue Dust To So2 Conversion Ratementioning

confidence: 99%

Effect of Metal Oxides and Smelting Dust on SO2 Conversion to SO3

et al. 2021

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The purpose of this study was to investigate the effects of metal oxides and smelting dust on the formation of sulfur trioxide during copper, lead, zinc smelting process and flue. Focusing on the effects of SO2 concentration, O2 concentration, and temperature on SO2 oxidation conversion rate under homogeneous test conditions, and under various metal oxide oxidation conditions, further in dust (mainly electric dust removal ash in copper, lead, zinc smelting process), which were studied by single factor experiment test. The results showed that the effect of heterogeneous catalytic oxidation on SO2 conversion rate is much greater than that of pure gas phase oxidation. The addition of five pure metal oxides such as Fe2O3, CuO, Al2O3, ZnO, and CaO obviously promoted the SO2 conversion rate under different conditions. At different temperatures, the ability of metal oxides to promote SO2 conversion is ranked: Fe2O3 > CuO > CaO > ZnO > Al2O3. The catalytic oxidation of copper, lead, and zinc smelting dust to SO2 conversion rate was studied, and the conclusion was drawn that the metal oxides that promoted SO2 conversion rate in copper smelting dust were Fe2O3, Al2O3, ZnO, CaO, and the main substance was Fe2O3; the metal oxides that promoted SO2 conversion in zinc smelting dust were Fe2O3, Al2O3, ZnO, CaO, CuO, and the main substances were Fe2O3 and ZnO; the metal oxides that promoted SO2 conversion rate in lead smelting dust were Fe2O3. Whether metal oxides or copper, zinc, lead smelting dust in the experiment, Fe2O3 displayed the strongest catalytic oxidation capacity.

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“…The hybrid sulfuric cycle investigated in this study requires a high temperature heat source to decompose the sulfuric acid in the sulfur dioxide SO 2 . The latter compound will supply the electrolyser unit to produce hydrogen [2].…”

Section: Introductionmentioning

confidence: 99%

Parametric Study of SO3 Conversion to SO2 in Tubular Reactor for Hydrogen Production via Sulfuric Cycle

Lassouane

2020

Springer Proceedings in Energy

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Hybrid sulfur (HyS) cycle or Westinghouse cycle is among the main candidates for full-scale solar hydrogen production. This cycle is one of the most attractive and simplest thermochemical processes, because it comprises only two global reaction steps and has only fluid reactants. The decomposition of sulfuric acid is a vital step in the sulfuric hybrid cycle process for the production of hydrogen from water. For this, the temperature needed for SO 3 to be converted into SO 2 and O 2 is very high. It requires operating temperatures above 800°C. Thus, SO 2 compound resulting from the decomposition reactor is the key compound used to feed the electrolyser where it is oxidized to regenerate H 2 SO 4 and produce H 2. This work focused on the sulfuric acid decomposition step in suggested tubular plug flow reactor with possible use of solar energy. A parametric study on the effects of temperature and pressure on the thermodynamics conversion of SO 3 to SO 2 was investigated. The theoretical sulfur trioxide conversion calculation was applied where a plug flow reactor model was assumed.

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Catalytic activities of Fe2O3 and chromium doped Fe2O3 for sulfuric acid decomposition reaction in an integrated boiler, preheater, and catalytic decomposer

Cited by 51 publications

References 59 publications

Detailed kinetic modeling of homogeneous H2SO4 decomposition in the sulfur–iodine cycle for hydrogen production

Detailed kinetic modeling of homogeneous H2SO4 decomposition in the sulfur–iodine cycle for hydrogen production

Effect of Metal Oxides and Smelting Dust on SO2 Conversion to SO3

Parametric Study of SO3 Conversion to SO2 in Tubular Reactor for Hydrogen Production via Sulfuric Cycle

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