utilize such methods as the hydrogen production technique, the electrolysis process should be combined. As direct
hydrogen production method, a watersplitting via thermochemical reactions are also attractive. So far, the possible
thermochemical water-splitting processes have been studied [1-3], and the promising processes are 2-step [4-13], I-S
[14-17], and UT3 processes [18-21]. Because the more than 800-1500 C is necessary to generate hydrogen by
using the above processes, the heat sources are limited to large-scale solar heat plants such as tower-type [21-23].
If the operating temperature of watersplitting could be lowered to below 500 °C, smallerscale (trough-type) solar
heat system can be utilized. Furthermore, thermal energy storage materials such as nitrates and carbonates can be
used to stably and continuously carry out the hydrogen production without the fluctuation of solar energy [24, 25].
The water-splitting via redox reactions of alkali metals are potential cycles to operate at lower temperature than that of conventional ones. The cycles consists of following four reactions, which are (1) Hgeneration, (2) metalseparation, (3) hydrolysis reactions, and (4) phase transition,
utilize such methods as the hydrogen production technique, the electrolysis process should be combined. As directhydrogen production method, a watersplitting via thermochemical reactions are also attractive. So far, the possiblethermochemical water-splitting processes have been studied [1-3], and the promising processes are 2-step [4-13], I-S[14-17], and UT3 processes [18-21]. Because the more than 800-1500 C is necessary to generate hydrogen byusing the above processes, the heat sources are limited to large-scale solar heat plants such as tower-type [21-23]. If the operating temperature of watersplitting could be lowered to below 500 °C, smallerscale (trough-type) solarheat system can be utilized. Furthermore, thermal energy storage materials such as nitrates and carbonates can beused to stably and continuously carry out the hydrogen production without the fluctuation of solar energy [24, 25]. The water-splitting via redox reactions of alkali metals are potential cycles to operate at lower temperature than that of conventional ones. The cycles consists of following four reactions, which are (1) Hgeneration, (2) metalseparation, (3) hydrolysis reactions, and (4) phase transition,
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utilize such methods as the hydrogen production technique, the electrolysis process should be combined. As direct
hydrogen production method, a watersplitting via thermochemical reactions are also attractive. So far, the possible
thermochemical water-splitting processes have been studied [1-3], and the promising processes are 2-step [4-13], I-S
[14-17], and UT3 processes [18-21]. Because the more than 800-1500 C is necessary to generate hydrogen by
using the above processes, the heat sources are limited to large-scale solar heat plants such as tower-type [21-23].
If the operating temperature of watersplitting could be lowered to below 500 °C, smallerscale (trough-type) solar
heat system can be utilized. Furthermore, thermal energy storage materials such as nitrates and carbonates can be
used to stably and continuously carry out the hydrogen production without the fluctuation of solar energy [24, 25].
The water-splitting via redox reactions of alkali metals are potential cycles to operate at lower temperature than that of conventional ones. The cycles consists of following four reactions, which are (1) Hgeneration, (2) metalseparation, (3) hydrolysis reactions, and (4) phase transition,
การแปล กรุณารอสักครู่..