Sulphur trioxide decomposition with supported platinum/palladium on rutile catalyst: 2. Performance of a laboratory fixed bed reactor

Stander, B.F.; Everson, Raymond C.; Neomagus, Hein W.J.P.; Merwe, A.F. van der; Tietz, M.

doi:10.1016/j.ijhydene.2014.12.087

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…A laboratory-scale, fixed-bed reactor with supported Pt/Pd catalysts was constructed and experimentally evaluated for SO 3 decomposition. At 1,103 K, SO 3 conversions were equivalent to 0.60, which reached 80% of the equilibrium value [10]. Moreover, the development of catalysts with high catalytic activity and stability is also an important issue for the enhancement of SO 3 decomposition [11,12].If SO 3 decomposition could attain a higher degree of conversion at medium temperatures (900−1,000 K), which extend the catalyst lifetime, this coupled system could result in hydrogen productionthat is both highly efficient and economic.…”

Section: Introductionmentioning

confidence: 92%

Catalytic membrane reactors for SO3 decomposition in Iodine–Sulfur thermochemical cycle: A simulation study

Meng

Kanezashi

Tsuru

2015

International Journal of Hydrogen Energy

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The possibility of applying a catalytic membrane reactor (CMR) to SO 3 decomposition in a low-temperature range was theoreticallyevaluated with the purpose of producing CO 2-free hydrogen inan Iodine-Sulfur thermochemical cycle.Aone-dimensional, isothermal and plug-flowmodelwas developed for a cocurrentmembrane reactor with selective permeation from the reactant stream to the permeate stream. Simulation results have revealedthat CMRs can greatly reduce the reaction temperature for SO 3 decomposition from the conventional 1,200-1,400 K to about 900 K.We predicted that porous inorganic membranes with a high O 2 permeabilityand with selectivitiesof more than 50 for O 2 /SO 3 and less than 10 for O 2 /SO 2 had the potential to effectively improve SO 3 conversion.CMRs were simulated to carry out SO 3 decomposition at different catalyst weights, reaction temperatures, and SO 3 feed flow rates as well as pressures in feed and permeate streams.SO 3 conversion at 900 Kwas increased to 0.93beyond the equilibrium conversion of 0.28due to a shift in thermodynamicequilibrium.

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Section: Introductionmentioning

confidence: 92%

Catalytic membrane reactors for SO3 decomposition in Iodine–Sulfur thermochemical cycle: A simulation study

Meng

Kanezashi

Tsuru

2015

International Journal of Hydrogen Energy

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“…Thomey et al [4] developed a reactor for decomposition of sulfuric acid by concentrated solar radiation, tested in the solar furnace of DLR in Cologne using ferric oxide (Fe 2 O 3 ), and mixed oxides (CuFe 2 O 4 ) catalysts. Sander et al [8] have been used a laboratory scale fixed bed reactor for the decomposition of sulfur trioxide with a supported platinum and palladium-based catalyst. Solar reactor system has been investigated for SO 3 conversion using ferric oxide (Fe 2 O 3 ) on an Al 2 O 3 support within a temperature range of 1050-1200 K [9].…”

Section: Reactor Designs Used For the So 3 Decompositionmentioning

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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Suppressing SO3 formation in copper smelting flue gas by ejecting pyrite into flue

Zhang

Chen

et al. 2020

Environ Sci Pollut Res

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Sulphur trioxide decomposition with supported platinum/palladium on rutile catalyst: 2. Performance of a laboratory fixed bed reactor

Cited by 7 publications

References 20 publications

Catalytic membrane reactors for SO3 decomposition in Iodine–Sulfur thermochemical cycle: A simulation study

Catalytic membrane reactors for SO3 decomposition in Iodine–Sulfur thermochemical cycle: A simulation study

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

Suppressing SO3 formation in copper smelting flue gas by ejecting pyrite into flue

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