Use of some oxides in radiolytical decomposition of water

Cecal, Alexandru; Goanta, Mirela; Palamaru, Mircea Nicolae; Stoicescu, T.; Popa, Karin; Paraschivescu, Andrei; Anita, Van Landschoot

doi:10.1016/s0969-806x(01)00201-8

Cited by 27 publications

(17 citation statements)

References 9 publications

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“…This source may mimic radioactive wastes with higher activity, which could be used to catalyze the radiolysis of water for hydrogen production. The radiolysis products are analyzed by a new method based on mass spectrometry [9,10].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen yield from water radiolysis in the presence of zeolites

et al. 2004

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This paper reports a study of the decomposition of water by gamma radiolysis in the presence of zeolites ZSM-5, SAPO-5, and MOR. The irradiation is performed using 60 Co as a source with 1:12£1015 Bq activity at a 8:3 kGy/h dose rate. The stable products of radiolysis as well as the other chemical species are measured by mass spectrometry. The calculated radiation yield (G H2 ) generally decreases in the order: H{ZSM{5 > Na{ZSM{5 > H{SAPO{5 > MOR under the given experimental conditions; the yield is higher in the presence of these catalysts than in their absence.

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Section: Introductionmentioning

confidence: 99%

Hydrogen yield from water radiolysis in the presence of zeolites

et al. 2004

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“…The yield is higher when energetic particles are used, with a value close to 1 when pure water is irradiated at room temperature [232]. The radiolysis of pure steam performed using Cm-244 alpha-particles gave a yield of 8 molecules/100 eV at 300°C whereas the yield was only 2 molecules/100 eV at 250°C [233]. With fast neutrons Sunaryo and co-workers reported a G value of 1.5 at 250°C [230].…”

Section: Hydrogen Production By Water Radiolysismentioning

confidence: 99%

Hydrogen Generation by Water Splitting

Grimes

Varghese

Ranjan

Light, Water, Hydrogen

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The 1973 oil embargo motivated significant research efforts in hydrogen production [1-4] that were subsequently abandoned when the fossil fuel flood-gates were re-opened. Recently emerging concerns over energy security, and the maintenance of our global ecosystem has rekindled the search for the processes that are efficient, economical and practical for large-scale production of hydrogen; herein we consider some possibilities.

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“…Ionization results in release of a proton, a hydroxyl and one hydrated electron. Experimental activity was performed using gamma radiation sources based on 60 Co in the presence of molecular catalysts dissolved in water such as BeO, SiO 2 , TiO 2 , ZrO 2 [44]. Production volumes of m mol of hydrogen per mL of solution were observed.…”

Section: Photonic Hydrogen Production Systemsmentioning

confidence: 99%