Enhancement of O2-releasing step with Fe2O3 in the water splitting by MnFe2O4–Na2CO3 system

Kaneko, Hiroshi; Hosokawa, Yukitoshi; Gokon, Nobuyuki; Kojima, Noriko; Hasegawa, Noriko; Kitamura, Masafumi; Tamaura, Yutaka

doi:10.1016/s0022-3697(01)00034-8

“…However, their cycle was not closed due to the use of sacrificial Fe 2 O 3 to extract Na þ from sodium manganese iron oxide produced in the hydrogen evolution step (22). Sodium sources other than Na 2 CO 3 , such as NaOH, have also been employed to facilitate the oxidation of Mn 2þ to Mn 3þ in the water splitting step (23).…”

Section: Resultsmentioning

confidence: 99%

Low-temperature, manganese oxide-based, thermochemical water splitting cycle

Xu

¹

,

Bhawe

²

,

Davis

³

2012

Proc. Natl. Acad. Sci. U.S.A.

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…Modification involving the introduction of Fe 2 O 3 as a sacrificial agent has been proposed, but the use of Fe 2 O 3 does not close the cycle either (12).…”

Section: Low-temperature Multistep Cyclesmentioning

confidence: 99%

Solar thermochemical splitting of water to generate hydrogen

Rao

¹

,

Dey

²

2017

Proc. Natl. Acad. Sci. U.S.A.

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…2. The schematic outline of two-step water spliting system with Zn-ferrite /Zn, Fe3O4 system [25] The solar decomposition of the Zn ferrite commenced above 1500 K and its decomposition ratio at 1750 K was evaluated to be 40% form the lattice constant measurement and chemical analysis. The solar decomposition of Zn ferrite can be readily with increasing temperature.…”

Section: Zinc Ferrite Catalyst In the Hydrogen Production From The Dementioning

confidence: 99%

“…These results encourage further investigation for solar operation to enhance the solar decomposition ratio of the Zn ferrite. The thermochemical cycles for H 2 production with Zn ferrite, Fe 2 O 3 system will be realized by the enhancement of solar decomposition of the Zn ferrite [25].…”

Section: Zinc Ferrite Catalyst In the Hydrogen Production From The Dementioning

confidence: 99%

Use of Specific Properties of Zinc Ferrite in Innovative Technologies

Kmita

¹

,

Pribulová

²

,

Holtzer

³

et al. 2016

Archives of Metallurgy and Materials

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

Enhancement of O2-releasing step with Fe2O3 in the water splitting by MnFe2O4–Na2CO3 system

Cited by 24 publications

References 12 publications

Low-temperature, manganese oxide-based, thermochemical water splitting cycle

Low-temperature, manganese oxide-based, thermochemical water splitting cycle

Solar thermochemical splitting of water to generate hydrogen

Use of Specific Properties of Zinc Ferrite in Innovative Technologies

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